SLVSBR0C October   2014  – June 2015 TPS8268090 , TPS8268105 , TPS8268120 , TPS8268150 , TPS8268180

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Soft Start
      2. 8.3.2 Undervoltage Lockout
      3. 8.3.3 Short-Circuit Protection
      4. 8.3.4 Thermal Shutdown
      5. 8.3.5 Enable
      6. 8.3.6 MODE Pin
    4. 8.4 Device Functional Modes
      1. 8.4.1 Spread Spectrum, PWM Frequency Dithering
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Input Capacitor Selection
        2. 9.2.2.2 Output Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
    3. 11.3 Surface Mount Information
    4. 11.4 Thermal and Reliability Information
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 References
    2. 12.2 Related Links
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Summary
    2. 13.2 MicroSiP™ DC/DC Module Package Dimensions

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7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted) (1)
MIN MAX UNIT
VI Voltage at VIN(2) –0.3 6 V
Voltage at VOUT(2) –0.3 3.6
Voltage at EN, MODE(2) –0.3 VIN + 0.3
Peak output current 1600 mA
TJ Operating internal junction temperature range –40 125 °C
Tstg Storage temperature range –55 125 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge (1)(2) Human body model ±2000 V
Charge device model ±500 V
Machine model ±100 V
(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.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VIN Input voltage range 2.5 5.5 V
IOUT Peak output current for TPS8268090, TPS8268105, TPS8268120 VIN ≥ 2.8V 0 1600(1) mA
Peak output current for TPS8268150, TPS8268180 VIN ≥ 3.2V
IOUT Average output current for TPS8268090, TPS8268105, TPS8268120 VIN ≥ 2.7V 0 1200(1) mA
Average output current for TPS8268150, TPS8268180 VIN ≥ 2.9V
IOUT Average output current during soft-start Vout ≤ 0.9 x VOUT,nom 0 1000(2) mA
Additional effective input capacitance 0 µF
Additional effective output capacitance 0 30(3) µF
TA Operating ambient temperature range –40 85 °C
(1) See Thermal and Reliability Information for additional details
(2) See Soft Start for additional details
(3) Due to the dc bias effect of ceramic capacitors, the effective capacitance is lower then the nominal value when a voltage is applied.

7.4 Thermal Information

THERMAL METRIC(1) TPS8268x UNIT
SIP
9 PINS
RθJA Junction-to-ambient thermal resistance 62 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 22 °C/W
RθJB Junction-to-board thermal resistance 25 °C/W
ψJT Junction-to-top characterization parameter 11 °C/W
ψJB Junction-to-board characterization parameter 25 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance n/a °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics

Minimum and maximum values are at VIN = 2.5 V to 5.5 V, EN = VIN and TA = –40°C to 85°C; Circuit of Parameter Measurement Information section (unless otherwise noted). Typical values are at VIN = 3.6 V, EN = VIN and TA = 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY CURRENT
IQ Operating quiescent current IOUT = 0mA 7 mA
ISD Shutdown current EN = low 0.5 5 μA
UVLO Undervoltage lockout threshold VIN rising 2.1 2.3 V
VIN falling 1.95 2.25 V
ENABLE, MODE
VIH High-level input voltage 0.9 V
VIL Low-level input voltage 0.4 V
Ilkg Input leakage current Input connected to GND or VIN; TJ = –40°C to 85°C 0.01 1.5 μA
PROTECTION
Thermal shutdown Temperature rising 140 °C
Thermal shutdown hysteresis Temperature falling 10 °C
ILIM Average output current limit 2100 mA
ISC Input current limit under short-circuit condition VOUT shorted to ground 150 mA
OUTPUT
TPS8268180 1.80 V
TPS8268150 1.50 V
TPS8268120 1.20 V
VOUT,NOM Nominal output voltage TPS8268105 1.05 V
TPS8268090 0.90 V
Output voltage accuracy TPS8268120, TPS8268105, TPS8268090 2.8V ≤ VIN ≤ 5.5V, 0mA ≤ IOUT ≤ 1600 mA
TJ = –40°C to 85°C		 0.985×VOUT,NOM VOUT,NOM 1.015×VOUT,NOM V
TPS8268180, TPS8268150 3.2V ≤ VIN ≤ 5.5V, 0mA ≤ IOUT ≤ 1600 mA
TJ = –40°C to 85°C
TPS8268120, TPS8268105, TPS8268090 2.7V ≤ VIN ≤ 5.5V, 0mA ≤ IOUT ≤ 1200 mA
TJ = –40°C to 125°C		 0.98×VOUT,NOM VOUT,NOM 1.025×VOUT,NOM V
TPS8268180, TPS8268150 2.9V ≤ VIN ≤ 5.5V, 0mA ≤ IOUT ≤ 1200 mA
TJ = –40°C to 125°C
Line regulation VIN = 2.5V to 5.5V, IOUT = 200 mA 0.2 %/V
Load regulation IOUT = 0mA to 1600 mA –0.85 %/A
fSW Nominal oscillator frequency IOUT = 0mA 5.5 MHz
RDIS VOUT discharge resistor 12 Ω

7.6 Timing Requirements

Minimum and maximum values are at VIN = 2.5 V to 5.5 V, EN = VIN and TA = –40°C to 85°C; Circuit of Parameter Measurement Information section (unless otherwise noted). Typical values are at VIN = 3.6 V, EN = VIN and TA = 25°C (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OUTPUT
Start-up delay time Time from EN = high to start switching 120 300 μs
tRAMP Ramp time IOUT = 0mA, Time from start switching until 95% of nominal output voltage 150 μs

7.7 Typical Characteristics

TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C006_SLVSBR0.png
VOUT = 1.80V 25°C
Figure 1. Efficiency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 D023_SLVSBR0.gif
VOUT = 1.80 V 25°C
Figure 3. Output Voltage vs Input Voltage
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 D024_SLVSBR0.gif
VOUT = 1.80 V 25°C
Figure 2. Output Voltage vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C014_SLVSBR0.png
VOUT = 1.80 V 25°C
Figure 4. Switching Frequency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C001_SLVSBR0.png
VOUT = 1.50V 25°C
Figure 5. Efficiency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C003_SLVSBR0.png
VOUT = 1.50 V 25°C
Figure 7. Output Voltage vs Input Voltage
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C005_SLVSBR0.png
VOUT = 1.20V 25°C
Figure 9. Efficiency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 D022_SLVSBR0.gif
VOUT = 1.20 V 25°C
Figure 11. Output Voltage vs Input Voltage
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C010_SLVSBR0.png
VOUT = 1.05V 25°C
Figure 13. Efficiency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C012_SLVSBR0.png
VOUT = 1.05 V 25°C
Figure 15. Output Voltage vs Input Voltage
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C004_SLVSBR0.png
VOUT = 0.9 V 25°C
Figure 17. Efficiency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C016_SLVSBR0.png
VIN = 0.9 V 25°C
Figure 19. Output Voltage vs Input Voltage
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C002_SLVSBR0.png
VOUT = 1.50 V 25°C
Figure 6. Output Voltage vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C019_SLVSBR0.png
VOUT = 1.50 V 25°C
Figure 8. Switching Frequency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C008_SLVSBR0.png
VOUT = 1.20 V 25°C
Figure 10. Output Voltage vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C013_SLVSBR0.png
VOUT = 1.20 V 25°C
Figure 12. Switching Frequency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C011_SLVSBR0.png
VOUT = 1.05 V 25°C
Figure 14. Output Voltage vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C018_SLVSBR0.png
VOUT = 1.05 V 25°C
Figure 16. Switching Frequency vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C007_SLVSBR0.png
VIN = 0.9 V 25°C
Figure 18. Output Voltage vs Output Current
TPS8268180 TPS8268150 TPS8268120 TPS8268105 TPS8268090 C017_SLVSBR0.png
VIN = 0.9 V 25°C
Figure 20. Switching Frequency vs Output Current