SLVS762C June   2007  – July 2015 TPS62242

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  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 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 Undervoltage Lockout
      2. 8.3.2 Mode Selection
      3. 8.3.3 Enable
      4. 8.3.4 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Soft Start
      2. 8.4.2 Power Save Mode
      3. 8.4.3 100% Duty Cycle Low Dropout Operation
      4. 8.4.4 Short-Circuit Protection
  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 Output Voltage Setting
        2. 9.2.2.2 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Output Capacitor Selection
          3. 9.2.2.2.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 TPS62240, Adjustable Output Voltage 1.8 V
      2. 9.3.2 TPS62243, Fixed Output Voltage 1.8 V
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Related Links
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

7 Specifications

7.1 Absolute Maximum Ratings

Over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
VIN Input voltage (2) –0.3 7 V
Voltage at EN, MODE –0.3 VIN +0.3, ≤7 V
Voltage on SW –0.3 7 V
Peak output current Internally limited A
TJ Maximum operating junction temperature –40 125 °C
Tstg Storage temperature –65 150 °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 network ground terminal.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge(3) Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins(1) ±2000 V
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins(2) ±1000
(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.
(3) The human body model is a 100-pF capacitor discharged through a 1.5-kΩ resistor into each pin.

7.3 Recommended Operating Conditions

Over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VIN Supply voltage, VIN 2 6 V
Output voltage for adjustable voltage 0.6 VIN V
TA Operating ambient temperature –40 85 °C
TJ Operating junction temperature –40 125 °C

7.4 Thermal Information

THERMAL METRIC(1) TPS6224x UNIT
DRV [WSON] DDC [SOT]
6 PINS 5 PINS
RθJA Junction-to-ambient thermal resistance 67.8 226.9 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 88.5 40.7 °C/W
RθJB Junction-to-board thermal resistance 37.2 48.8 °C/W
ψJT Junction-to-top characterization parameter 2.0 0.5 °C/W
ψJB Junction-to-board characterization parameter 37.6 48.1 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 7.9 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

Over full operating ambient temperature range, typical values are at TA = 25°C. Unless otherwise noted, specifications apply for condition VIN = EN = 3.6 V. External components CIN = 4,7 μF 0603, COUT = 10 μF 0603, L = 2.2 μH, refer to parameter measurement information.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
SUPPLY
VIN Input voltage range 2 6 V
IOUT Output current 2.3 V ≤ VIN  ≤ 6 V 300 mA
2 V ≤ VIN  ≤ 2.3 V 150
IQ Operating quiescent current IOUT = 0 mA. PFM mode enabled (MODE = GND) device not switching 15 μA
IOUT = 0 mA. PFM mode enabled (MODE = GND) device switching, VOUT = 1.8 V, (1) 18.5
IOUT = 0 mA, switching with no load (MODE = VIN), PWM operation , VOUT = 1.8 V, VIN = 3 V 3.8 mA
ISD Shutdown current EN = GND 0.1 1 μA
UVLO Undervoltage lockout threshold Falling 1.85 V
Rising 1.95
ENABLE, MODE
VIH High level input voltage, EN, MODE 2 V ≤ VIN  ≤ 6 V 1 VIN V
VIL Low level input voltage, EN, MODE 2 V ≤ VIN  ≤ 6 V 0 0.4 V
IIN Input bias current, EN, MODE EN, MODE = GND or VIN 0.01 1 μA
POWER SWITCH
RDS(on) High-side MOSFET ON-resistance VIN = VGS = 3.6 V, TA = 25°C 240 480 mΩ
Low-side MOSFET ON-resistance 180 380
ILIMF Forward current-limit MOSFET high-side and low-side VIN = VGS = 3.6 V 0.56 0.7 0.84 A
TSD Thermal shutdown Increasing junction temperature 140 °C
Thermal shutdown hysteresis Decreasing junction temperature 20 °C
OSCILLATOR
fSW Oscillator frequency 2 V ≤ VIN   ≤ 6 V 2 2.25 2.5 MHz
OUTPUT
VOUT Adjustable output voltage range 0.6 VIN V
VREF Reference voltage 600 mV
VFB Feedback voltage MODE = VIN, PWM operation, 2 V ≤ VIN  ≤ 6 V, in fixed output voltage versions VFB = VOUT, see (3)
–1.5% 0% 1.5%
Feedback voltage PFM mode MODE = GND, device in PFM mode 0%
Load regulation PWM mode -0.5 %/A
tStart Up Start-up Time Time from active EN to reach 95% of VOUT nominal 500 μs
tRamp VOUT ramp-up time Time to ramp from 5% to 95% of VOUT 250 μs
Ilkg Leakage current into SW pin VIN = 3.6 V, VIN = VOUT = VSW, EN = GND,(2) 0.1 1 μA
(1) See the parameter measurement information.
(2) In fixed output voltage versions, the internal resistor divider network is disconnected from FB pin.
(3) For VIN = VOUT + 0.6 .

7.6 Typical Characteristics

TPS62240 TPS62242 TPS62243 isd_v_vin_lvs762.gifFigure 1. Shutdown Current Into VIN vs Input Voltage
TPS62240 TPS62242 TPS62243 rds_hs_vin_lvs762.gifFigure 3. Static Drain-Source On-State Resistance vs Input Voltage
TPS62240 TPS62242 TPS62243 iq_v_vin_lvs762.gifFigure 2. Quiescent Current vs Input Voltage
TPS62240 TPS62242 TPS62243 rds_ls_vin_lvs762.gifFigure 4. Static Drain-Source On-State Resistance vs Input Voltage