SLVSA44B November   2009  – February 2015 TPS22907

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  Switching Characteristics: VIN = 3.6 V
    7. 6.7  Switching Characteristics: VIN = 1.8 V
    8. 6.8  Switching Characteristics: VIN = 1.1 V
    9. 6.9  Typical DC Characteristics
    10. 6.10 Typical AC Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 On and Off Control
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Input Capacitor
      2. 9.1.2 Output Capacitor
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Managing Inrush Current
        2. 9.2.2.2 Voltage Drop from VIN to VOUT
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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8 Detailed Description

8.1 Overview

The TPS22907 is a single-channel, 1-A load switch in a small, space-saving DSBGA-4 package. This device implements a P-channel MOSFET to provide a low ON-resistance for a low-voltage drop across the device. A controlled rise time is used in applications to limit the inrush current.

8.2 Functional Block Diagram

TPS22907 BlockDiagram.gif

8.3 Feature Description

Table 1. Device Feature List

DEVICE RON (Typical)
VIN = 1.8 V		 SLEW RATE (Typical)
VIN = 1.8 V		 MAXIMUM OUTPUT CURRENT ENABLE
TPS22907 58 mΩ 36 μs 1 A Active high

8.3.1 On and Off Control

The ON pin controls the state of the switch. Asserting ON high enables the switch. ON is active high and has a low threshold, making it capable of interfacing with low-voltage signals. The ON pin is compatible with standard GPIO logic threshold. It can be used with any microcontroller with 1.2-V, 1.8-V, 2.5-V, or 3.3-V GPIOs.

8.4 Device Functional Modes

Table 2. Function Table

ON (Control Input) VIN to VOUT
L OFF
H ON