SLUS525A March   2007  – September 2015 TPS61050 , TPS61052

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 I2C Interface Timing Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Efficiency
      2. 7.3.2 Soft-Start
      3. 7.3.3 Shutdown
      4. 7.3.4 LED Failure Modes
      5. 7.3.5 Undervoltage Lockout
      6. 7.3.6 Thermal Shutdown
    4. 7.4 Device Functional Modes
      1. 7.4.1 Operating Modes: Torch and Flash
      2. 7.4.2 Mode of Operation: Flash Blanking (TPS61050)
      3. 7.4.3 Hardware Voltage Mode Selection (TPS61052)
      4. 7.4.4 Low Light Dimming Mode
    5. 7.5 Programming
      1. 7.5.1 3-Bit ADC
      2. 7.5.2 Serial Interface Description
      3. 7.5.3 F/S-Mode Protocol
      4. 7.5.4 TPS6105X I2C Update Sequence
    6. 7.6 Register Maps
      1. 7.6.1 Register Description
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Typical Application Schematic
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
          1. 8.2.1.2.1 Inductor Selecton
          2. 8.2.1.2.2 Capacitor Selection
            1. 8.2.1.2.2.1 Input Capacitor
            2. 8.2.1.2.2.2 Output Capacitor
          3. 8.2.1.2.3 Checking Loop Stability
        3. 8.2.1.3 Application Curves
      2. 8.2.2 High-Power White LED Solution Featuring Privacy Indicator
      3. 8.2.3 High-Power White LED Solution Featuring No-Latency Turn-Down Through PA TX Signal
      4. 8.2.4 High-Power White LED Flash Driver And AF/Zoom Motor Drive Supply
      5. 8.2.5 White LED Flash Driver and Audio Amplifier Power Supply Exclusive Operation
      6. 8.2.6 White LED Flash Driver and Audio Amplifier Power Supply Operating Simultaneously
      7. 8.2.7 White LED Flash Driver and Auxiliary Lighting Zone Power Supply
      8. 8.2.8 2 × 300 mA Dual LED Camera Flash
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 Thermal Considerations
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Third-Party Products Disclaimer
    2. 11.2 Related Links
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Summary

5 Pin Configuration and Functions

DRC Package
10-Pin VSON
Top View
TPS61050 TPS61052 pos_lus525_qfn.gif
YZG Package
12-Pin DSBGA
Top View
TPS61050 TPS61052 pos_lus525_csp_top.gif
YZG Package
12-Pin DSBGA
Bottom View
TPS61050 TPS61052 pos_lus525_csp_bot.gif

Pin Functions

PIN I/O DESCRIPTION
NAME VSON DSBGA
AVIN 5 D3 I This is the input voltage pin of the device. Connect directly to the input bypass capacitor.
VOUT 9 A2 O Boost converter output.
LED 6 D2 I LED return input. This feedback pin regulates the LED current through the internal sense resistor by regulating the voltage across it. The regulation operates with typically 250 mV dropout voltage. Connect to the cathode of the LED.
FLASH_SYNC 10 A1 I Flash strobe pulse synchronization input.
FLASH_SYNC = LOW (GND): The device is operating and regulating the LED current to the torch current level (TC).
FLASH_SYNC = HIGH (VIN): The device is operating and regulating the LED current to the flash current level (FC).
SCL 2 B3 I Serial interface clock line. This pin must not be left floating and must be terminated.
SDA 1 A3 I/O Serial interface address/data line. This pin must not be left floating and must be terminated.
GPIO 3 C3 I/O General purpose input/output (refer to REGISTER2). This pin can either be configured as a logic input or as an open-drain output (TPS61050).
ENVM 3 C3 I Enable pin for voltage mode boost converter (TPS61052).
SW 8 B1, B2 I/O Inductor connection. Drain of the internal power MOSFET. Connect to the switched side of the inductor. SW is high impedance during shutdown.
PGND 7 C1, C2 — Power ground. Connect to AGND underneath IC.
AGND 4 D1 — Analog ground.
PowerPAD™ — — — Internally connected to PGND.