SLUSES9 July   2022 TPS563300

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  Fixed Frequency Peak Current Mode
      2. 7.3.2  Pulse Frequency Modulation
      3. 7.3.3  Voltage Reference
      4. 7.3.4  Output Voltage Setting
      5. 7.3.5  Enable and Adjusting Undervoltage Lockout
      6. 7.3.6  Minimum On Time, Minimum Off Time, and Frequency Foldback
      7. 7.3.7  Frequency Spread Spectrum
      8. 7.3.8  Overvoltage Protection
      9. 7.3.9  Overcurrent and Undervoltage Protection
      10. 7.3.10 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Modes Overview
      2. 7.4.2 Heavy Load Operation
      3. 7.4.3 Light-Load Operation
      4. 7.4.4 Dropout Operation
      5. 7.4.5 Minimum On-Time Operation
      6. 7.4.6 Shutdown Mode
  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 Bootstrap Capacitor Selection
        4. 8.2.2.4 Undervoltage Lockout Set Point
        5. 8.2.2.5 Output Inductor Selection
        6. 8.2.2.6 Output Capacitor Selection
        7. 8.2.2.7 Input Capacitor Selection
        8. 8.2.2.8 Feedforward Capacitor CFF Selection
        9. 8.2.2.9 Maximum Ambient Temperature
      3. 8.2.3 Application Curves
    3. 8.3 Best Design Practices
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
      2. 9.1.2 Development Support
        1. 9.1.2.1 Custom Design With WEBENCH® Tools
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. TJ = –40°C to +150°C, VIN = 3.8 V to 30 V, unless otherwise noted.
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
POWER SUPPLY (VIN PIN)
VINOperation input voltage3.828V
IQNonswitching quiescent currentEN = 5 V, VFB = 0.85 V 20µA
ISHDNShutdown supply currentVEN = 0 V2µA
VIN_UVLOInput undervoltage lockout thresholdsRising threshold3.43.63.8V
Falling threshold3.13.33.5V
Hysteresis300mV
ENABLE (EN PIN)
VEN_RISEEnable thresholdRising enable threshold1.211.28V
VEN_FALL

Disable threshold

Falling disable threshold1.11.17V
IpEN pullup currentVEN = 1.0 V0.7µA
IhEN pullup hysteresis currentVEN = 1.5 V1.4µA
VOLTAGE REFERENCE (FB PIN)
VFBFB voltageTJ = 25°C788800812mV
TJ = –40°C to 150°C784800816mV
IFBInput leakage currentVFB = 0.8 V0.15μA
INTEGRATED POWER MOSFETS
RDSON_HSHigh-side MOSFET on-resistanceTJ = 25°C, VBST – SW = 5 V 76mΩ
RDSON_LSLow-side MOSFET on-resistanceTJ = 25°C 32mΩ
CURRENT LIMIT
IHS_LIMITHigh-side MOSFET current limit4.255.8A
ILS_LIMITLow-side MOSFET current limit2.93.84.5A
IPEAK_MINMinimum peak inductor current0.75A
SOFT START
TSS Fixed internal soft-start time Time from 0% × VOUT to 100% × VOUT 2 ms
OSCILLATOR FREQUENCY (RT PIN)
fSWSwitching center frequency450500550kHz
tON_MIN(1)Minimum ON pulse width70ns
tOFF_MIN(1)Minimum OFF pulse width140ns
tON_MAX(1)Maximum ON pulse width7μs
OUTPUT OVERVOLTAGE AND UNDERVOLTAGE PROTECTION
VOVPOutput OVP thresholdOVP detect (L→H) 112%115%118%
Hysteresis 5%
VUVPOutput UVP thresholdUVP detect (H→L)65%
thiccup_ONUV hiccup ON time before entering hiccup mode after soft start ends256μs
thiccup_OFFUV hiccup OFF time before restart10.5 × tSSS
THERMAL SHUTDOWN
TSHDN(1)Thermal shutdown threshold Shutdown temperature165°C
THYS(1)Hysteresis30°C
SPREAD SPECTRUM FREQUENCY
fmModulation frequencyfSW / 128kHz
fspreadInternal spread oscillator frequency±6%
(1) Not production tested, specified by design