SLVSAE1B October   2010  – September 2015 TPS65708

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 Parameter Measurement Information
    1. 7.1 Setup
  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 Converters
      2. 8.3.2  Power Save Mode
      3. 8.3.3  Dynamic Voltage Positioning
      4. 8.3.4  Soft Start
      5. 8.3.5  100% Duty Cycle Low Dropout Operation
      6. 8.3.6  180° Out-of-Phase Operation
      7. 8.3.7  Undervoltage Lockout and Enable for DCDC1, DCDC2, LDO1, and LDO2
      8. 8.3.8  Output Voltage Discharge
      9. 8.3.9  Power-Up Sequencing
      10. 8.3.10 Short-Circuit Protection
      11. 8.3.11 Thermal Shutdown
      12. 8.3.12 LDOs
      13. 8.3.13 LED Driver
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Powering All Rails from the Input Supply of 5 V
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
          1. 9.2.1.2.1 Output Filter Design (Inductor and Output Capacitor)
            1. 9.2.1.2.1.1 Inductor Selection
            2. 9.2.1.2.1.2 Output Capacitor Selection
            3. 9.2.1.2.1.3 Input Capacitor Selection
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Powering the LDOs From the Output of the DC-DC Converters to Improve Efficiency
  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 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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订购信息

5 Pin Configuration and Functions

YZH Package
16-Pin DSBGA
Bottom View
TPS65708 po_lvsae1.gif

Pin Functions

PIN I/O DESCRIPTION
NO. NAME
A1 VLDO1 O Output voltage from LDO1
A2 VINLDO1 I Input voltage pin for LDO1
A3 VINLDO2 I Input voltage pin for LDO2
A4 VLDO2 O Output voltage from LDO2
B1 ISINK O Open-drain current sink; connect to the cathode of a LED
B2 PWM I Input for LED PWM dimming
B3 MODE I Set low to enable Power Save Mode. Pulling this PIN to high forces the device to operate in PWM mode over the whole load range.
B4 VCC I Supply Input for internal reference, has to be connected to VIN1 and VIN2
C1 VIN1 I Input voltage pin for buck converter(1)
C2 FB1 I Feedback input from buck converter(1)
C3 FB2 I Feedback input from buck converter(2)
C4 VIN2 I Input voltage pin for buck converter(2)
D1 PGND1 — Power ground
D2 L1 O Switch output from buck converter(1)
D3 L2 O Switch output from buck converter(2)
D4 PGND2 — Power ground
(1) VCC must be the highest input voltage for the device to operate correctly.
(2) VIN1/VIN2 must be connected to VCC.