SLUSDL8B December   2019  – April 2021 TPS563202

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 Adaptive On-Time Control and PWM Operation
      2. 7.3.2 ECO Mode Control
      3. 7.3.3 Soft Start and Pre-Biased Soft Start
      4. 7.3.4 Current Protection
      5. 7.3.5 Undervoltage Lockout (UVLO) Protection
      6. 7.3.6 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Eco-mode Operation
      3. 7.4.3 Standby Operation
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Output Voltage Resistors Selection
        2. 8.2.2.2 Output Filter Selection
        3. 8.2.2.3 Input Capacitor Selection
        4. 8.2.2.4 Bootstrap Capacitor Selection
      3. 8.2.3 Application Curves
  9. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

TJ = –40°C to 125°C, VIN = 12 V (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY CURRENT
IVINOperating – non-switching supply currentVIN current, EN = 5 V, VFB = 1 V380520µA
IVINSDNShutdown supply currentVIN current, EN = 0 V13µA
LOGIC THRESHOLD
VENHEN high-level input voltageEN1.351.6V
VENLEN low-level input voltageEN0.81.05V
RENEN pin resistance to GNDVEN = 12 V225400900kΩ
VFB VOLTAGE
VFBTHVFB threshold voltageEco-mode™ operation815mV
VFB threshold voltageContinuous mode operation at TA = 25oC790806822mV
IFBVFB input currentVFB = 1 V0±0.1µA
MOSFET
RDS(on)hHigh-side switch resistanceTA = 25°C, VBST – SW = 5.5 V95mΩ
RDS(on)lLow-side switch resistanceTA = 25°C57mΩ
CURRENT LIMIT
IoclLow side current limitInductor valley current set point3.34.45.6A
THERMAL SHUTDOWN
TSDNThermal shutdown threshold(1)Shutdown temperature172°C
Hysteresis37
ON-TIME TIMER CONTROL
tOFF(MIN)Minimum off timeVFB = 0.5 V220310ns
SOFT START
TssSoft-start timeInternal soft-start time, test VOUT from 10% to 90%1.2ms
FREQUENCY
FswSwitching frequencyVO = 1.05 V, continue current conditions.580kHz
OUTPUT UNDERVOLTAGE
VUVPOutput UVP thresholdHiccup detect (H > L)65%
THICCUP_WAITHiccup on time2.2ms
THICCUP_REHiccup time before restart18.3ms
UVLO
UVLOUVLO thresholdWake up VIN voltage4.04.3V
Shutdown VIN voltage3.33.6
Hysteresis VIN voltage0.4
(1) Not production tested.