SLVSGV8 October   2022 TPS568231

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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. 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 Mode
      2. 7.3.2  Eco-mode™ Control
      3. 7.3.3  4.7-V LDO
      4. 7.3.4  MODE Selection
      5. 7.3.5  Soft Start and Prebiased Soft Start
      6. 7.3.6  Enable and Adjustable UVLO
      7. 7.3.7  Power Good
      8. 7.3.8  Overcurrent Protection and Undervoltage Protection
      9. 7.3.9  UVLO Protection
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Output Voltage Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Light Load Operation
      2. 7.4.2 Standby Operation
  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 External Component Selection
          1. 8.2.2.1.1 Output Voltage Set Point
          2. 8.2.2.1.2 Switching Frequency and MODE Selection
          3. 8.2.2.1.3 Inductor Selection
          4. 8.2.2.1.4 Output Capacitor Selection
          5. 8.2.2.1.5 Input Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

Electrical Characteristics

TJ = –40°C to +125°C, VIN=12V (unless otherwise noted)
PARAMETERCONDITIONSMINTYPMAXUNIT
SUPPLY CURRENT
IINVIN supply currentTJ = 25°C, VEN = 5 V, non-switching146µA
IVINSDNVIN shutdown currentVEN = 0 V9.3µA
LOGIC THRESHOLD
VENHEN H-level threshold voltage1.1751.2251.3V
VENLEN L-level threshold voltage1.0251.1041.15V
VENHYS0.121V
IENp1EN pullup currentVEN = 1.0 V0.351.912.95µA
IENp2VEN = 1.3 V34.1975.5µA
FEEDBACK VOLTAGE
VFBFB voltageT = 25°C598600602mV
TJ = 0°C to 85°C597.5600602.5mV
TJ = –40°C to 85°C594600602.5mV
TJ = –40°C to 125°C594600606mV
LDO VOLTAGE
VREG5LDO output voltageTJ = –40°C to 125°C4.584.74.83V
ILIM5LDO output current limitTJ = –40°C to 125°C100150200mA
UVLO
UVLOUVLO thresholdVREG5 rising voltage4.25V
VREG5 falling voltage3.52V
VREG5 hysteresis730mV
UVLO, VREG5 = 4.7 VUVLO threshold, VREG5 = 4.7 VVIN rising voltage, VREG5 = 4.7 V3.32V
VIN falling voltage, VREG5 = 4.7 V3.24V
VIN hysteresis, VREG5 = 4.7 V80mV
MOSFET
RDS(on)HHigh-side switch resistanceTJ = 25°C, VVREG5 = 4.7 V7.8
RDS(on)LLow-side switch resistanceTJ = 25°C, VVREG5 = 4.7 V3.2
ON-TIME TIMER CONTROL
tON minSW minimum on timeVIN = 17 V, VOUT  = 0.6 V, fSW = 1200 kHz60ns
tOFFSW minimum off timeVFB  = 0.5 V310ns
SOFT START AND OUTPUT DISCHARGE
tSSSoft-start timeInternal soft start time, T= –40°C to 125°C1.2ms
IssSoft-start charge currentT= –40°C to 125°C4.967.1µA
RDISDischarge resistanceT = 25°C, VOUT = 0.5 V, VEN = 0 V370Ω
CURRENT LIMIT
IOCLCurrent limit (low-side sourcing)ILIM-1 option, valley current67.18.15A
ILIM option, valley current89.410.8A
INOCLCurrent limit (low-side negative)Valley current3.9A
POWER GOOD
VPGOODTHPGOOD thresholdVFB falling (fault)84%
VFB rising (good)93%
VFB rising (fault)116%
VFB falling (good)108%
tPGOODLYPGOOD delay timeDelay from low to high128µs
Delay form high to low14µs
IPGOODPGOOD sink currentIOL = 4 mA0.4V
IPGLKPGOOD leak currentVPGOOD = 5.5 V1V
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VOVPOutput OVP thresholdOVP detect121%
TOVPDELOutput OVP response delay52µs
VUVPOutput UVP thresholdHiccup detect70%
tUVPDGLUVP prop deglitch1ms
tUVPDELOutput hiccup delay relative to SS timeUVP detect1cycle
tUVPENOutput hiccup enable delay relative to SS timeUVP detect7cycle
THERMAL SHUTDOWN
TSDNThermal shutdown threshold(1)Shutdown temperature160°C
Hysteresis15°C
Not production tested