SLVSA08A February   2010  – September 2015 TPS657052

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Dissipation Ratings
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 DC-DC Converter
      2. 8.3.2 Power Save Mode
        1. 8.3.2.1 Dynamic Voltage Positioning
        2. 8.3.2.2 Soft Start
        3. 8.3.2.3 100% Duty Cycle Low Dropout Operation
      3. 8.3.3 180° Out-of-Phase Operation
        1. 8.3.3.1 Under-Voltage Lockout
      4. 8.3.4 Short-Circuit Protection
      5. 8.3.5 Thermal Shutdown
      6. 8.3.6 LDO
      7. 8.3.7 Enable for DCDC1, DCDC2 and LDO
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.1.1 Inductor Selection
          2. 9.2.2.1.2 Output Capacitor Selection
          3. 9.2.2.1.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Related Links
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Two 400-mA Step-Down Converters
  • Up to 92% Efficiency
  • VIN Range for DC-DC Converter
    From 3.3 V to 6 V
  • 2.25-MHz Fixed-Frequency Operation
  • Power Save Mode at Light Load Current
  • Output Voltage Accuracy in PWM Mode ±1.5%
  • 100% Duty Cycle for Lowest Dropout
  • 180° Out-of-Phase Operation
  • 1 General Purpose 200-mA LDO
  • VIN Range for LDO From 1.7 V to 6.0 V
  • Available in a 16-Ball DSBGA (WCSP) With 0.5-mm Pitch

2 Applications

  • Digital Cameras
  • Portable Media Players
  • Handheld Equipment

3 Description

The TPS65705x devices are small power management units targeted for embedded camera module or other portable low-power consumer-end equipments. The device contains two highly efficient step-down converters, a low dropout linear regulator, and additional supporting functions. The 2.25-MHz step-down converter enters a low-power mode at light load for maximum efficiency across the widest possible range of load currents. For low-noise applications, the device can be forced into fixed-frequency PWM mode using the MODE pin. The device allows the use of small inductors and capacitors to achieve a small sized solution. The TPS65705x provides an output current of up to
400 mA on both DC-DC converters and integrates one 200-mA LDO with different output settings. The LDO operates with an input voltage range from 1.7 V to 6 V, thus allowing it to be supplied from the output of the step-down converter or directly from the system voltage.

The TPS65705x comes in a small 16-pin wafer chip scale package (WCSP) with 0.5-mm ball pitch.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS657051 DSBGA (16) 2.08 mm × 2.08 mm
TPS657052
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Application Circuit

TPS657051 TPS657052 FP_app_cir_lvsa08.gif