SLVSEY3C February   2019  – April 2021 TPS51396A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 PWM Operation and D-CAP3 Control
      2. 7.3.2 Soft Start
      3. 7.3.3 Large Duty Operation
      4. 7.3.4 Power Good
      5. 7.3.5 Over Current Protection and Undervoltage Protection
      6. 7.3.6 Over Voltage Protection
      7. 7.3.7 UVLO Protection
      8. 7.3.8 Output Voltage Discharge
      9. 7.3.9 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Light Load Operation
      2. 7.4.2 Advanced Eco-mode Control
      3. 7.4.3 Out of Audio Mode
      4. 7.4.4 Mode Selection
      5. 7.4.5 Standby Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 1V Output Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 External Component Selection
          1. 8.2.2.1.1 Output Voltage Set Point
          2. 8.2.2.1.2 Inductor Selection
          3. 8.2.2.1.3 Output Capacitor Selection
          4. 8.2.2.1.4 Input Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • RJE|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.5 Electrical Characteristics

TJ =-40°C to 125°C, VVIN = 12 V, unless otherwise noted
PARAMETERTEST CONDITIONMINTYPMAXUNIT
SUPPLY CURRENT
VINInput voltage rangeVIN4.524V
IVINVIN supply currentNo load, VEN = 3.3 V, Switching90uA
IVINSDNShutdown supply currentNo load, VEN = 0 V2uA
VCC OUTPUT
VCCVCC output voltageVVIN > 5.0 V4.8555.15V
VVIN = 4.5 V4.5V
ICCVCC current limit20mA
FEEDBACK VOLTAGE
VFBFB voltageTJ = 25°C594600606mV
TJ = -40°C to 125°C592600611mV
DUTY CYCLE and FREQUENCY CONTROL
FSWSwitching frequencyTJ = 25°C , FSW = 600 kHz,Vo = 1 V600kHz
TON(MIN)SW minumum on timeTJ = 25°C60ns
TOFF(MIN)SW minimum off timeTJ = 25°C, VFB = 0.5 V190ns
MOSFET and DRIVERS
RDS(ON)HHigh side switch resistanceTJ = 25°C19.5mΩ
RDS(ON)LLow side switch resistanceTJ = 25°C9.5mΩ
OOA FUNCTION
TOOAOOA mode operation period28us
OUTPUT DISCHARGE and SOFT START
RDISDischarge resistanceTJ = 25°C, VEN = 0 V420Ω
TSSSoft start timeInternal soft-start time, SS floating1.3ms
ISSSoft start charge current5uA
POWER GOOD
TPGDLYPG start-up delayPG from low to high1ms
VPGTHPG thresholdVFB falling (fault)85%
VFB rising (good)90%
VFB rising (fault)115%
VFB falling (good)110%
VPG_LPG sink current capabilityIOL = 4 mA0.4V
IPGLKPG leak currentVPGOOD = 5.5 V1uA
CURRENT LIMIT
IOCLOver current thresholdValley current set point8.19.812A
INOCLNegative over current threshold3.9A
LOGIC THRESHOLD
VENHEN high-level input voltage1.21.4V
VENLEN low-level input voltage0.81.05V
IENEnable internal pull down currentVEN = 0.8 V2µA
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVPOVP trip threshold125%
tOVPDLYOVP prop deglitchTJ = 25°C20us
VUVPUVP trip threshold60%
tUVPDLYUVP prop deglitch256us
UVLO
VUVLOVINVIN UVLO thresholdWake up4.24.4V
Shutdown3.63.8V
Hysteresis0.4V
OVER TEMPERATURE PROTECTION
TOTPOTP trip threshold(1)Shutdown temperature150°C
TOTPHSYOTP hysteresis(1)Hysteresis20°C
(1) Not production tested