SLVSC95A April   2017  – September 2020 TPS561201 , TPS561208

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Pulse Skip Control (TPS561201)
      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 Custom Design With WEBENCH® Tools
        2. 8.2.2.2 Output Voltage Resistors Selection
        3. 8.2.2.3 Output Filter Selection
        4. 8.2.2.4 Input Capacitor Selection
        5. 8.2.2.5 Bootstrap 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 Development Support
        1. 11.1.1.1 Custom Design With WEBENCH® Tools
    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

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

6.5 Electrical Characteristics

TJ = –40°C to 125°C, V = 12 V (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
SUPPLY CURRENT
IVINOperating – non-switching supply currentVIN current, EN = 5 V, VFB = 0.8 VTPS561201380520µA
TPS561208590750
IVINSDNShutdown supply currentVIN current, EN = 0 V110µA
LOGIC THRESHOLD
VENHEN high-level input voltageEN1.6V
VENLEN low-level input voltageEN0.8V
RENEN pin resistance to GNDVEN = 12 V225400900kΩ
VFB VOLTAGE AND DISCHARGE RESISTANCE
VFB threshold voltageVO = 1.05 V, IO = 10 mA, Eco-mode™ operation774mV
VFBTHVFB threshold voltageVO = 1.05 V, continuous mode operation749768787mV
IVFBVFB input currentVFB = 0.8 V0±0.1µA
MOSFET
RDS(on)hHigh-side switch resistanceTA = 25°C, VBST – SW = 5.5 V140mΩ
RDS(on)lLow-side switch resistanceTA = 25°C84mΩ
CURRENT LIMIT
IoclCurrent limitDC current, VOUT = 1.05 V, L1 = 2.2 µH1.21.62.0A
THERMAL SHUTDOWN
TSDNThermal shutdown threshold(1)Shutdown temperature160°C
Hysteresis25
ON-TIME TIMER CONTROL
tOFF(MIN)Minimum off timeVFB = 0.5 V220310ns
SOFT START
tssSoft-start timeInternal soft-start time1.0ms
Frequency
FswSwitching frequencyVIN = 12 V, VO = 1.05 V, FCCM mode580kHz
OUTPUT UNDERVOLTAGE AND OVERVOLTAGE PROTECTION
VUVPOutput UVP thresholdHiccup detect (H > L)65%
THICCUP_WAITHiccup wait time1.8ms
THICCUP_REHiccup time before restart15ms
UVLO
UVLOUVLO thresholdWake up VIN voltage4.04.3V
Shut down VIN voltage3.33.6
Hysteresis VIN voltage0.4
(1) Not production tested