SLVSDI1C April   2016  – November 2025 TPS7B4254-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Short-Circuit and Overcurrent Protection
      2. 6.3.2 Integrated Inductive Clamp Protection
      3. 6.3.3 OUT Short-to-Battery and Reverse-Polarity Protection
      4. 6.3.4 Undervoltage Shutdown
      5. 6.3.5 Thermal Protection
      6. 6.3.6 Regulated Output (OUT)
      7. 6.3.7 Adjustable Output Voltage (FB and ADJ)
        1. 6.3.7.1 OUT Voltage Equal to the Reference Voltage
        2. 6.3.7.2 OUT Voltage Higher Than Reference Voltage
        3. 6.3.7.3 Output Voltage Lower Than Reference Voltage
    4. 6.4 Device Functional Modes
      1. 6.4.1 Operation With VIN < 4V
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Applications
      1. 7.2.1 Application With Output Voltage Equal to the Reference Voltage
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
          1. 7.2.1.2.1 Input Capacitor
          2. 7.2.1.2.2 Output Capacitor
        3. 7.2.1.3 Application Curve
      2. 7.2.2 High-Accuracy LDO
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Device Nomenclature
      2. 8.1.2 Development Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

5.5 Electrical Characteristics

VIN = 13.5V, VADJ ≥ 2V, TJ = –40°C to 150°C, over operating ambient temperature range (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
VIN(UVLO)IN undervoltage detectionVIN rising3.65V
VIN falling2.8V
ΔVOUTOutput voltage tracking accuracy(1)IOUT = 100μA to 150mA, VIN = 4 to 40V
VADJ < VIN – 1V
2V < VADJ < 18V		–44mV
ΔVOUT(ΔIO)Load regulation, steady-stateIOUT = 0.1 to 150mA, VADJ= 5V4mV
ΔVOUT(ΔVI)Line regulation, steady-stateIOUT = 10mA, VIN = 6 to 40V, VADJ = 5V4mV
PSRRPower-supply ripple rejectionfrip = 100Hz, Vrip = 0.5 VPP, COUT = 10μF, IOUT = 100mA70dB
VDROPOUTDropout voltage (VDROPOUT = VIN – VOUT)IOUT = 100mA, VIN = VADJ ≥ 4V(2)160260mV
IOUT(LIM)Output current limitationVADJ = 5V, OUT short to GND151450520mA
IR(IN)Reverse current at INVIN = 0V, VOUT = 40V, VADJ = 5V–20µA
IR(–IN)Reverse current at negative INVIN = –40V, VOUT = 0V, VADJ = 5V–10µA
TSDThermal shutdown temperature175°C
TSD_hysThermal shutdown hysteresis15°C
IQCurrent consumption4V ≤ VIN ≤ 40V, VADJ = 0V24µA
4V ≤ VIN ≤ 40V, VADJ = 5V, IOUT < 100µA60100µA
4V ≤ VIN ≤ 40V, VADJ = 5V, IOUT < 150mA210260µA
IQ(DROPOUT)Current consumption in dropout regionVIN = VADJ = 5V, IOUT = 100μA70140µA
IADJReference input currentVADJ = VFB = 5V5.5µA
VADJ(LOW)Reference low signal validVOUT = 0V00.7V
VADJ(HIGH)Reference high signal valid|VOUT – VADJ| < 4mV218V
IFBFB bias currentVADJ = VFB = 5V0.5µA
(1) The tracking accuracy is specified when the FB pin is directly connected to the OUT pin which means VADJ = VOUT, external resistor divider variance is not included.
(2) Measured when the output voltage, VOUT, has dropped 10mV from the nominal value.