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  • TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter With Up to 50 mA / 200 mA Output Current

    • SLVSBO4C October   2012  – December 2014 TPS62736 , TPS62737

      UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.  

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  • TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter With Up to 50 mA / 200 mA Output Current
  1. 1 Features
  2. 2 Applications
  3. 3  Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Voltage Options
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 Handling Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Step-Down (Buck) Converter Operation
      2. 9.3.2 Programming OUT Regulation Voltage and VIN_OK
      3. 9.3.3 Nano-Power Management and Efficiency
    4. 9.4 Device Functional Modes
      1. 9.4.1 Enable Controls
      2. 9.4.2 Startup Behavior
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 TPS62737 3-Resistor Typical Application Circuit
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Inductor Selection
          2. 10.2.1.2.2 Output Capacitor Selection
          3. 10.2.1.2.3 Input Capacitor Selection
          4. 10.2.1.2.4 Resistor Selection
        3. 10.2.1.3 Application Curves
      2. 10.2.2 TPS62736 4-Resistor Typical Application Circuit
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Related Links
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information
  15. IMPORTANT NOTICE
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DATA SHEET

TPS6273x Programmable Output Voltage Ultra-Low Power Buck Converter With Up to 50 mA / 200 mA Output Current

1 Features

  • Industry's Highest Efficiency at Low Output Currents: > 90% With IOUT = 15 µA
  • Ultra-Low Power Buck Converter
    • TPS62736 Optimized for 50-mA Output Current
    • TPS62737 Optimized for 200-mA Output Current
    • 1.3-V to 5-V Resistor Programmable Output Voltage Range
    • 2-V to 5.5-V Input Operating Range
    • 380-nA and 375-nA Quiescent Current During Active Operation for TPS62736 and TPS62737
    • 10-nA Quiescent Current During Ship Mode Operation
    • 2% Voltage Regulation Accuracy
  • 100% Duty Cycle (Pass Mode)
  • EN1 and EN2 Control
    • Two Power-Off States:
      1. Shipmode (Full Power-Off State)
      2. Standby Mode Includes VIN_OK Indication
  • Input Power-Good Indication (VIN_OK)
    • Push-Pull Driver
    • Resistor Programmable Threshold Level

2 Applications

  • Ultra-Low Power Applications
  • 2-Cell and 3-Cell Alkaline-Powered Applications
  • Energy Harvesting
  • Solar Chargers
  • Thermal Electric Generator (TEG) Harvesting
  • Wireless Sensor Networks (WSN)
  • Low-Power Wireless Monitoring
  • Environmental Monitoring
  • Bridge and Structural Health Monitoring (SHM)
  • Smart Building Controls
  • Portable and Wearable Health Devices
  • Entertainment System Remote Controls

3 Description

The TPS6273x family provides a highly integrated ultra low power buck converter solution that is well suited for meeting the special needs of ultra-low power applications such as energy harvesting. The TPS6273x provides the system with an externally programmable regulated supply to preserve the overall efficiency of the power-management stage compared to a linear step-down converter. This regulator is intended to step-down the voltage from an energy storage element such as a battery or super capacitor to supply the rail to low-voltage electronics. The regulated output has been optimized to provide high efficiency across low-output currents (<10 µA) to high currents (200 mA).

The TPS6273x integrates an optimized hysteretic controller for low-power applications. The internal circuitry uses a time-based sampling system to reduce the average quiescent current.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS6273x VQFN (14) 3.50 mm × 3.50 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.
front_page_app_diag_slvsbno4.gif

Efficiency vs Output Current

eff_front_page_slvsbno4.gif

4 Revision History

Changes from B Revision (July 2013) to C Revision

  • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. Go

Changes from A Revision (March 2013) to B Revision

  • Added the TPS62737 Pinout informationGo
  • Added graphs for TPS62737 to the Typical CharacteristicsGo
  • Added the TPS62737 Application Circuit.Go
  • Changed Figure 72Go
  • Added Figure 73Go

Changes from * Revision (October 2012) to A Revision

  • Changed the device From: Preview To: ActiveGo

5 Description (continued)

To further assist users in the strict management of their energy budgets, the TPS6273x toggles the input power-good indicator to signal an attached microprocessor when the voltage on the input supply has dropped below a preset critical level. This signal is intended to trigger the reduction of load currents to prevent the system from entering an undervoltage condition. In addition, independent enable signals allow the system to control whether the converter is regulating the output, monitoring only the input voltage, or to shut down in an ultra-low quiescent sleep state.

The input power-good threshold and output regulator levels are programmed independently through external resistors.

All the capabilities of TPS6273x are packed into a small footprint 14-lead 3.5-mm × 3.5-mm QFN package (RGY).

6 Device Voltage Options

PART NO. OUTPUT VOLTAGE MAX OUTPUT CURRENT INPUT UVLO
TPS62736(1) Resistor Programmable 50 mA 2 V
TPS62737(1) Resistor Programmable 200 mA 2 V
(1) The RGY package is available in tape on reel. Add R suffix to order quantities of 3000 parts per reel, T suffix for 250 parts per reel.

7 Pin Configuration and Functions

TPS62736 RGY Package
14 Pins
Top View
pinout_slvsbo4.gif
TPS62737 RGY Package
14 Pins
Top View
pinout_737_slvsbo4.gif

Pin Functions

PIN DESCRIPTION
NAME TPS62736
RGY		 TPS62737
RGY		 TYPE
EN1 5 5 Input Digital input for chip enable, standby, and ship-mode. EN1 = 1 sets ship mode independent of EN2. EN1=0, EN2 = 0 disables the buck converter and sets standby mode. EN1=0, EN2=1 enables the buck converter.
Do not leave either pin floating.
EN2 6 6 Input
IN 1 1 Input Input supply to the buck regulator
NC 2, 3, 4, 14 4, 14 Input Connect to VSS
OUT 11 11 Output Step down (buck) regulator output
SW 13 2, 13 Input Inductor connection to switching node
Thermal Pad 15 15 Input Connect to VSS
VIN_OK 10 10 Output Push-pull digital output for power-good indicator for the input voltage.
Pulled up to VIN pin.
VIN_OK_SET 8 8 Input Resistor divider input for VIN_OK threshold. Pull to VIN to disable.
Do not leave pin floating.
VOUT_SET 9 9 Input Resistor divider input for VOUT regulation level
VRDIV 7 7 Output Resistor divider biasing voltage
VSS 12 3, 12 Input Ground connection for the device

8 Specifications

8.1 Absolute Maximum Ratings(1)(2)

over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
Pin voltage Input voltage range on IN, EN1, EN2, VRDIV, VIN_OK_SET, VOUT_SET, VIN_OK, OUT, SW,NC –0.3 5.5 V
TPS62736 Peak currents IN, OUT 100 mA
TPS62737 Peak currents IN, OUT 370 mA
TJ Temperature range Operating junction temperature range –40 125 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute–maximum–rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to VSS/ground terminal

8.2 Handling Ratings

MIN MAX UNIT
Tstg Storage temperature range –65 150 °C
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) -1 1 kV
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) -500 500 V
Machine Model (MM) -150 150
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

8.3 Recommended Operating Conditions

MIN NOM MAX UNIT
IN IN voltage range 2 5.5 V
CIN TPS62736 Input Capacitance 4.7 μF
TPS62737 Input Capacitance 22
COUT Output Capacitance 10 22 μF
R1 +
R2 +
R3		 Total Resistance for setting reference voltage 13 MΩ
LBUCK TPS62736 Inductance 4.7 10 μH
TPS62737 Inductance 10
TA TPS62736 Operating free air ambient temperature –40 85 °C
TPS62737 Operating free air ambient temperature –20 85
TJ Operating junction temperature –40 105 °C

8.4 Thermal Information

THERMAL METRIC(1) TPS6273x UNIT
RGY
14 PINS
θJA Junction-to-ambient thermal resistance 33.7 °C/W
θJCtop Junction-to-case (top) thermal resistance 37.6
θJB Junction-to-board thermal resistance 10.1
ψJT Junction-to-top characterization parameter 0.4
ψJB Junction-to-board characterization parameter 10.3
θJCbot Junction-to-case (bottom) thermal resistance 2.9
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report (SPRA953).

8.5 Electrical Characteristics

Over recommended ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply for conditions of VIN = 4.2 V, VOUT = 1.8 V External components, CIN = 4.7 µF for TPS62736 and 22 µF for TPS62737,
LBUCK = 10 µH, COUT = 22 µF.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
QUIESCENT CURRENTS
IQ TPS62736 Buck enabled state
(EN1 = 0, EN2 = 1)		 VIN = 2 V, No load on VOUT 380 550 nA
TPS62736 Buck disabled VIN_OK active state
(EN1 = 0, EN2 = 0)		 340 520
TPS62736 Ship mode state (EN1 = 1, EN2 = x) 10 65
TPS62737 Buck enabled state
(EN1 = 0, EN2 = 1)		 375 600 nA
TPS62737 Buck disabled VIN_OK active state
(EN1 = 0, EN2 = 0)		 345 560
TPS62737 Ship mode state (EN1 = 1, EN2 = x) 11 45
OUTPUT
VBIAS Output regulation reference 1.205 1.21 1.217 V
VOUT TPS62736 Output regulation (Spec does not include the resistor accuracy error) IOUT = 10 mA;
1.3 V < VOUT < 3.3 V		 –2% 0% 2%
TPS62737 Output regulation (Spec does not include the resistor accuracy error) IOUT = 100 mA;
1.3 V < VOUT < 3.3 V; 		–2% 0% 2%
TPS62736 Output line regulation IOUT = 100 µA;
VIN = 2.4 V to 5.5 V		 0.01 %/V
TPS62737 Output line regulation IOUT = 10 mA;
VIN = 2.3 V to 5.5 V		 0.31
TPS62736 Output load regulation IOUT = 100 µA to 50 mA,
VIN = 2.2 V		 0.01 %/mA
TPS62737 Output load regulation IOUT = 100 µA to 200 mA,
VIN = 2.2 V; –20°C < TA < 85°C		 0.01 %/mA
TPS62736 Output ripple VIN = 4.2V, IOUT = 1 mA,
COUT = 22 μF		 20 mVpp
TPS62737 Output ripple VIN = 4.2 V, IOUT = 1 mA,
COUT = 22 μF		 40 mVpp
Programmable voltage range for output voltage threshold IOUT = 10 mA 1.3 VIN – 0.2 V
VDO TPS62736 Drop-out-voltage when VIN is less than VOUT(SET) VIN = 2.1 V, VOUT(SET) = 2.5 V,
IOUT = 10 mA, 100% duty cycle		 24 30 mV
TPS62737 Drop-out-voltage when VIN is less than VOUT(SET) VIN = 2.1 V, VOUT(SET) = 2.5 V,
IOUT = 100 mA, 100% duty cycle		 180 220 mV
tSTART-STBY Startup time with EN1 low and EN2 transition to high (Standby Mode) TPS62736, COUT = 22 µF 400 μs
TPS62737, COUT = 22 µF 300 μs
tSTART-SHIP Startup time with EN2 high and EN1 transition from high to low (Ship Mode) COUT = 22 µF 100 ms
POWER SWITCH
RDS(on) TPS62736 High-side switch ON resistance VIN = 3 V 2.4 3 Ω
TPS62736 Low-side switch ON resistance VIN = 3 V 1.1 1.5 Ω
TPS62737 High-side switch ON resistance VIN = 2.1 V 1.8 2.2 Ω
TPS62737 Low-side switch ON resistance VIN = 2.1 V 0.9 1.3 Ω
ILIM TPS62736 Cycle-by-cycle current limit 2.4 V < VIN < 5.25 V;
1.3 V < VOUT < 3.3 V		 68 86 100 mA
TPS62737 Cycle-by-cycle current limit 2.4 V < VIN < 5.25 V;
1.3 V < VOUT < 3.3 V;
–20°C < TA < 85°C		 295 340 370 mA
fSW Max switching frequency 2 MHz
INPUT
VIN-UVLO Input under voltage protection VIN falling 1.91 1.95 2 V
VIN-OK Input power-good programmable voltage range 2 5.5 V
VIN-OK-ACC TPS62736 Accuracy of VIN-OK setting VIN increasing –2% 2%
TPS62737 Accuracy of VIN-OK setting –3% 3%
VIN-OK-HYS Fixed hysteresis on VIN_OK threshold, OK_HYST VIN increasing 40 mV
VIN_OK-OH VIN-OK output high threshold voltage Load = 10 µA VIN – 0.2 V
VIN_OK-OL VIN-OK output low threshold voltage 0.1 V
EN1 and EN2
VIH Voltage for EN High setting. Relative to VIN VIN = 4.2 V VIN – 0.2 V
VIL Voltage for EN Low setting 0.2 V

8.6 Typical Characteristics

Table 1. Table of Graphs for TPS62736

Unless otherwise noted, graphs were taken using Figure 62 with L = Toko 10 µH DFE252012C FIGURE
η VO = 2.5 V Efficiency vs Output Current Figure 1
vs Input Voltage Figure 2
VO = 1.8 V Efficiency vs Output Current Figure 3
vs Input Voltage Figure 4
VO = 1.3 V Efficiency vs Output Current Figure 5
vs Input Voltage Figure 6
VOUT (DC) VO = 2.5 V vs Output Current Figure 7
vs Input Voltage Figure 8
vs Temperature Figure 9
VO = 1.8 V vs Output Current Figure 10
vs Input Voltage Figure 11
vs Temperature Figure 12
VO = 1.3 V vs Output Current Figure 13
vs Input Voltage Figure 14
vs Temperature Figure 15
IOUT MAX (DC) VO = 2.5 V vs Input Voltage Figure 16
VO = 1.8 V Figure 17
VO = 1.3 V Figure 18
Input IQ EN1 = 1, EN2 = 0 (Ship Mode) vs Input Voltage Figure 19
EN1 = 0, EN2 = 0 (Standby Mode) Figure 20
EN1 = 0, EN2 = 1 (Active Mode) Figure 21
Switching Frequency VO = 2.5 V vs Output Current Figure 23
vs Input Voltage Figure 24
Output Ripple VO = 2.5 V vs Output Current Figure 25
vs Input Voltage Figure 26
C001_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 1. Efficiency vs Output Current, VOUT = 2.5 V
C003_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 3. Efficiency vs Output Current, VOUT = 1.8 V
C005_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 5. Efficiency vs Output Current, VOUT = 1.3 V
C007_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 7. Output Voltage vs Output Current. VOUT = 2.5 V
C009_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 9. Output Voltage vs Temperature, VOUT = 2.5 V
C011_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 11. Output Voltage vs Input Voltage, VOUT = 1.8 V
C013_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 13. Output Voltage vs Output Current, VOUT = 1.3 V
C015_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
VOUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 15. Output Voltage vs Temperature, VOUT = 1.3 V
C017_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 17. Maximum Output Current vs Input Voltage,
VOUT = 1.8 V
C019_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = open; EN1 = high; EN2 = x
Thermal stream provided temperature variation
Figure 19. Input Quiescent Current
vs Input Voltage Ship Mode
C021_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as voltage source > VOUT to prevent switching
Thermal stream provided temperature variation
Figure 21. Input Quiescent Current
vs Input Voltage Active Mode
C022_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 23. Major Switching Frequency vs Output Current
C025_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Scope probe with small ground lead used to measure ripple across COUT
Figure 25. Output Voltage Ripple vs Output Current
C002_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 2. Efficiency vs Input Voltage, VOUT = 2.5 V
C004_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 4. Efficiency vs Input Voltage, VOUT = 1.8 V
C006_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 6. Efficiency vs Input Voltage, VOUT = 1.3 V
C008_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 8. Output Voltage vs Input Voltage, VOUT = 2.5 V
C010_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 10. Output Voltage vs Output Current, VOUT = 1.8 V
C012_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 12. Output Voltage vs Temperature, VOUT = 1.8 V
C014_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 14. Output Voltage vs Input Voltage, VOUT = 1.3 V
C016_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 16. Maximum Output Current vs Input Voltage,
VOUT = 2.5 V
C018_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 18. Maximum Output Current vs Input Voltage,
VOUT = 1.3 V
C020_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = open; EN1 = EN2 = low
Thermal stream provided temperature variation
Figure 20. Input Quiescent Current
vs Input Voltage Standby Mode
C026_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as voltage source > VOUT to prevent switching
Thermal stream provided temperature variation
Figure 22. Input Quiescent Current
vs Input Voltage Active Mode where RSUM = R1 + R2 + R3
C023_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 24. Major Switching Frequency vs Input Voltage
C024_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Scope probe with small ground lead used to measure ripple across COUT
Figure 26. Output Voltage Ripple vs Input Voltage

Table 2. Table of Graphs for TPS62737

Unless otherwise noted, graphs were taken using Figure 52 with L = Toko 10 µH DFE252012C FIGURE
η VO = 2.5 V Efficiency vs Output Current Figure 27
vs Input Voltage Figure 28
VO = 1.8 V Efficiency vs Output Current Figure 29
vs Input Voltage Figure 30
VO = 1.3 V Efficiency vs Output Current Figure 31
vs Input Voltage Figure 32
VOUT (DC) VO = 2.5 V vs Output Current Figure 33
vs Input Voltage Figure 33
vs Temperature Figure 35
VO = 1.8 V vs Output Current Figure 36
vs Input Voltage Figure 37
vs Temperature Figure 38
VO = 1.3 V vs Output Current Figure 39
vs Input Voltage Figure 40
vs Temperature Figure 41
IOUT MAX (DC) VO = 2.5 V vs Input Voltage Figure 42
VO = 1.8 V Figure 43
VO = 1.3 V Figure 44
Input IQ EN1 = 1, EN2 = 0 (Ship Mode) vs Input Voltage Figure 45
EN1 = 0, EN2 = 0 (Standby Mode) Figure 46
EN1 = 0, EN2 = 1 (Active Mode) Figure 47
Switching Frequency VO = 1.8 V vs Output Current Figure 48
vs Input Voltage Figure 49
Output Ripple VO = 1.8 V vs Output Current Figure 51
vs Input Voltage Figure 51
C048_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 27. Efficiency vs Output Current, VOUT = 2.5 V
C047_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 29. Efficiency vs Output Current, VOUT = 1.8 V
C046_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 31. Efficiency vs Output Current, VOUT = 1.3 V
C061_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 33. Output Voltage vs Output Current. VOUT = 2.5 V
C067_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 35. Output Voltage vs Temperature, VOUT = 2.5 V
C057_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 37. Output Voltage vs Input Voltage, VOUT = 1.8 V
C059_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 39. Output Voltage vs Output Current, VOUT = 1.3 V
C065_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 41. Output Voltage vs Temperature, VOUT = 1.3 V
C063_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 43. Maximum Output Current
vs Input Voltage, VOUT = 1.8 V
C054_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = open; EN1 = high; EN2 = x
Thermal stream provided temperature variation
Figure 45. Input Quiescent Current
vs Input Voltage Ship Mode
C053_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as voltage source > VOUT to prevent switching
Thermal stream provided temperature variation
Figure 47. Input Quiescent Current
vs Input Voltage Active Mode
C051_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 49. Major Switching Frequency vs Input Voltage
C052_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Scope probe with small ground lead used to measure ripple across COUT
Figure 51. Output Voltage Ripple vs Input Voltage
C045_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 28. Efficiency vs Input Voltage, VOUT = 2.5 V
C044_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 30. Efficiency vs Input Voltage, VOUT = 1.8 V
C043_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 32. Efficiency vs Input Voltage, VOUT = 1.3 V
C058_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 34. Output Voltage vs Input Voltage, VOUT = 2.5 V
C060_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 36. Output Voltage vs Output Current, VOUT = 1.8 V
C066_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Thermal stream provided temperature variation
Figure 38. Output Voltage vs Temperature, VOUT = 1.8 V
C056_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 40. Output Voltage vs Input Voltage, VOUT = 1.3 V
C064_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 42. Maximum Output Current
vs Input Voltage VOUT = 2.5 V
C062_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = sourcemeter configured as current source to increasingly sink current until V(OUT) < VOUT - 100 mV
Thermal stream provided temperature variation
Figure 44. Maximum Output Current
vs Input Voltage, VOUT = 1.3 V
C055_SLVSBO4.png
IN = Sourcemeter configured as voltage source and measuring current
OUT = open; EN1 = EN2 = low
Thermal stream provided temperature variation
Figure 46. Input Quiescent Current
vs Input Voltage Standby Mode
C049_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Figure 48. Major Switching Frequency vs Output Current
C050_SLVSBO4.png
IN = Sourcemeter configured as voltage source
OUT = sourcemeter configured as current source to sink current and VCOMP > VOUT
Scope probe with small ground lead used to measure ripple across COUT
Figure 50. Output Voltage Ripple vs Output Current

 
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