SBVS392A june   2022  – august 2023 TPS7B4255-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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 Timing Characteristics
    7. 6.7 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Tracker Output Voltage (VOUT)
        1. 7.3.1.1 Output Voltage Equal to the Reference Voltage
        2. 7.3.1.2 Output Voltage Less Than the Reference Voltage
      2. 7.3.2 Reverse Current Protection
      3. 7.3.3 Undervoltage Lockout
      4. 7.3.4 Thermal Protection
      5. 7.3.5 Current Limit
      6. 7.3.6 Output Short to Battery
      7. 7.3.7 Tracking Regulator With an Enable Circuit
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Operation
      2. 7.4.2 Dropout Operation
      3. 7.4.3 Operation With VIN < 3 V
      4. 7.4.4 Disable With ADJ/EN Control
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Dropout Voltage
      2. 8.1.2 Reverse Current
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Input and Output Capacitor Selection
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Package Mounting
        2. 8.4.1.2 Board Layout Recommendations to Improve PSRR and Noise Performance
        3. 8.4.1.3 Power Dissipation and Thermal Considerations
        4. 8.4.1.4 Thermal Performance Versus Copper Area
      2. 8.4.2 Layout Examples
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Device Nomenclature
    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
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

Package Options

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

5 Pin Configuration and Functions

GUID-20221209-SS0I-G6QX-431H-QHPMNQD73MSX-low.svgFigure 5-1 DBV Package,5-Pin SOT-23(Top View)
GUID-20211215-SS0I-6WDF-S1VH-VLLZFS0BD8GT-low.svgFigure 5-2 DYB Package,5-Pin SOT-23(Top View)
Table 5-1 Pin Functions
PIN TYPE DESCRIPTION
NAME DBV DYB
ADJ/EN 1 1 I Adjustable or enable input pin. Connect the external reference voltage to this pin. This pin connects to the error amplifier internally. A low signal below VIL disables the device, and a high signal above VIH enables the device. Connect the voltage reference directly or with a voltage divider for lower output voltages. To compensate for line influences, place a 0.1-μF capacitor close to this pin.
GND 2 2, 5 G Ground pin.
IN 3 3 I Input power-supply voltage pin. This pin is the device supply. For best transient response and to minimize input impedance, use the recommended value or larger ceramic capacitor from IN to GND as listed in the Recommended Operating Conditions table. Place the input capacitor as close to the input of the device as possible to compensate for line influences.
NC 5 — — NC pin. This pin is not internally connected. This pin can either be left floating or connected to GND for improved thermal performance.
OUT 4 4 O Tracker output voltage pin. A capacitor is required from OUT to GND for stability. For best transient response, use the nominal recommended value or larger ceramic capacitor from OUT to GND; see the Recommended Operating Conditions table. Place the output capacitor as close to output of the device as possible.