SLVS978D March   2010  – September 2016 TPS61310 , TPS61311

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  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 I2C Interface Timing Requirements
    7. 7.7 Dissipation Ratings
    8. 7.8 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Privacy Indicator
        1. 9.3.1.1 Dedicated LED Privacy Indicator
        2. 9.3.1.2 White LED Privacy Indicator
      2. 9.3.2 Safe Operation and Protection Features
        1. 9.3.2.1 LED Temperature Monitoring (Finger-Burn Protection)
        2. 9.3.2.2 LED Failure Modes (Open and Short Detection) and Overvoltage Protection
          1. 9.3.2.2.1 LED Open Circuit Detection and Overvoltage Protection
          2. 9.3.2.2.2 Short-Circuit Protection
        3. 9.3.2.3 LED Current Ramp-Up and Ramp-Down
        4. 9.3.2.4 Battery Voltage Droop Monitoring and Protection
        5. 9.3.2.5 Undervoltage Lockout
        6. 9.3.2.6 Hot Die Detection and Thermal Shutdown
        7. 9.3.2.7 Current Limit
        8. 9.3.2.8 Flash Blanking (Tx-Mask) for Instantaneous Flash Current Reduction
      3. 9.3.3 Start-Up Sequence
      4. 9.3.4 NRESET Input: Hardware Enable or Disable
      5. 9.3.5 Serial Interface Description
        1. 9.3.5.1 F/S-Mode Protocol
        2. 9.3.5.2 H/S-Mode Protocol
        3. 9.3.5.3 TPS6131x I2C Update Sequence
        4. 9.3.5.4 Slave Address Byte
        5. 9.3.5.5 Register Address Byte
      6. 9.3.6 LED Forward Voltage Calibration
    4. 9.4 Device Functional Modes
      1. 9.4.1 Video Light and Flash Strobe Operation
        1. 9.4.1.1 LED Hardware Setup
        2. 9.4.1.2 Triggering Video Light and Flash
        3. 9.4.1.3 Level-Sensitive Flash Trigger (STT = 0)
        4. 9.4.1.4 Rising-Edge Flash Trigger (STT = 1)
      2. 9.4.2 Voltage Mode
        1. 9.4.2.1 Down Mode in Voltage Mode Operation
        2. 9.4.2.2 Power Good Indication
      3. 9.4.3 Power-Save Mode Operation, Efficiency
      4. 9.4.4 Shutdown
    5. 9.5 Register Maps
      1. 9.5.1 REGISTER0 (address = 0x00)
      2. 9.5.2 REGISTER1 (address = 0x01)
      3. 9.5.3 REGISTER2 (address = 0x02)
      4. 9.5.4 REGISTER3 (address = 0x03)
      5. 9.5.5 REGISTER4 (address = 0x04)
      6. 9.5.6 REGISTER5 (address = 0x05)
      7. 9.5.7 REGISTER6 (address = 0x06)
      8. 9.5.8 REGISTER7 (address = 0x07)
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 2x 600-mA High Power White LED Solution Featuring Privacy Indicator
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Inductor Selection
          2. 10.2.1.2.2 Input Capacitor
          3. 10.2.1.2.3 Output Capacitor
          4. 10.2.1.2.4 NTC Selection
          5. 10.2.1.2.5 Checking Loop Stability
          6. 10.2.1.2.6 LED Flash Current Level Optimization Versus Battery Droop
        3. 10.2.1.3 Application Curves
      2. 10.2.2 1200-mA High Power White LED Solution Featuring Voltage Mode
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Operational Modes:
    • Video Light and Flash Strobe
    • Voltage Regulated Converter: 3.8 V to 5.7 V With Down Mode
    • Standby: 2 µA (Typical)
  • LED VF Measurement
  • Power-Save Mode for Improved Efficiency at Low Output Power, Up to 95% Efficiency
  • I2C Compatible Interface up to 3.4 Mbps
  • Dual Wire Camera Module Interface
  • Zero Latency Tx-Masking Input
  • Hardware Reset Input
  • Privacy Indicator LED Output
  • GPIO and Power Good Output
  • Various Safe Operation and Robust Handling Features:
    • LED Temperature Monitoring
    • Open and Shorted LED Detection and Protection
    • Integrated LED Safety Timer
    • Automatic Battery Voltage Droop Monitoring and Protection
    • Smooth LED Current Ramp-Up and Ramp-Down
    • Undervoltage Lockout
  • Total Solution Size of Less Than 25 mm2
  • Available in a 20-Pin NanoFree™ DSBGA Package

2 Applications

  • Single, Dual, or Triple White LED Flash Supply for Cell Phones and Smart-Phones
  • Video Lighting for Digital Video Applications
  • General Lighting Applications
  • Audio Amplifier Power Supply

3 Description

The TPS6131x family is an integrated solution with a wide feature set for driving up to three LEDs for still-camera flash strobe and video-camera lighting applications. It is based on a high efficiency synchronous boost topology with combinable current sinks to drive up to three white LEDs in parallel. The 2-MHz switching frequency allows the use of small and low-profile 2.2-µH inductors. To optimize overall efficiency, the device operates with a low LED-feedback voltage and regulated output-voltage adaptation.

The device integrates a control scheme that automatically optimizes the LED current flash budget as a function of the battery voltage condition.

The TPS6131x not only operates as a regulated current source, but also as a standard voltage boost regulator. The device enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. These operating modes can be useful to supply other high power devices in the system (for example, a hands-free audio PA).

To simplify video light and flash synchronization with the camera module, the device offers a dedicated control interface (STRB0, STRB1) for zero latency LED turnon time.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS61310, TPS61311 DSBGA (20) 2.20 mm × 1.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

TPS61310 TPS61311 typ_app_fp_lvs978.gif

4 Revision History

Changes from C Revision (November 2012) to D Revision

  • Added Device Information table,ESD Ratings table,Recommended Operating Conditions table,Thermal Information table,Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information sectionGo
  • Deleted Ordering Information table; see POA at the end of the data sheetGo

Changes from B Revision (September 2011) to C Revision

  • Added revision letter C to literature numberGo
  • Added TPS61311 to ordering tableGo
  • Added Current Limit Setting for TPS61311Go
  • Added current limit setting for TPS61311 in register mapGo

Changes from A Revision (October 2010) to B Revision

  • Changed VUVLO to max value from 2.35 V to 2.4 V.Go
  • Updated LED forward voltage calibration description.Go
  • Updated SFT bit descriptionGo