SLVSC13A July   2013  – March 2016

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 Function
  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 EasyScale Timing Requirements
    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  Normal Operation
      2. 8.3.2  Boost Converter
      3. 8.3.3  IFBx Pin Unused
      4. 8.3.4  Enable and Start-Up
      5. 8.3.5  Soft Start
      6. 8.3.6  Full-Scale Current Program
      7. 8.3.7  Brightness Control
      8. 8.3.8  Undervoltage Lockout
      9. 8.3.9  Overvoltage Protection
      10. 8.3.10 Overcurrent Protection
      11. 8.3.11 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 One-Wire Digital Interface (Easyscale Interface)
      2. 8.4.2 PWM Control Interface
    5. 8.5 Programming
      1. 8.5.1 EasyScale Programming
  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 Inductor Selection
        2. 9.2.2.2 Schottky Diode Selection
        3. 9.2.2.3 Compensation Capacitor Selection
        4. 9.2.2.4 Output Capacitor Selection
      3. 9.2.3 Application Curves
      4. 9.2.4 Additional Application Circuits
  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

Package Options

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

1 Features

  • 2.7-V to 6.5-V Input Voltage
  • Integrated 1.5-A/40-V MOSFET
  • 1.2-MHz Switching Frequency
  • Dual Current Sinks of up to 30-mA Current Each
  • 1% Typical Current Matching and Accuracy
  • 26.5-V Overvoltage Protection Threshold
  • Adaptive Boost Output to WLED Voltages
  • Very Low Voltage Headroom Control (90 mV)
  • Flexible Digital and PWM Brightness Control
  • One-Wire Control Interface (EasyScale™)
  • PWM Dimming Control Interface
  • Up to 100:1 PWM Dimming Ratio
  • Up to 10-Bit Dimming Resolution
  • Up to 90% Efficiency
  • Built-in Soft Start
  • Built-in WLED Open and Short Protection
  • Thermal Shutdown
  • Supports 4.7-µH Inductor Application

2 Applications

  • Smart Phones
  • PDAs, Handheld Computers
  • GPS Receivers
  • Backlight for Small and Media Form Factor LCD Display With Single-Cell Battery Input

3 Description

The TPS61162D is a dual-channel WLED driver which provides highly integrated solutions for single-cell Li-ion-battery-powered smart-phone backlighting. The device has a built-in high efficiency boost regulator with integrated 1.5-A/40-V power MOSFET and can support as low as 2.7-V input voltage. With two high current-matching capability current sink regulators, the device can drive up to 7s2p WLED diodes. The boost output can automatically adjust to the WLED forward voltage, allowing very low voltage headroom control, thus improving LED strings efficiency effectively.

The TPS61162D supports both the PWM dimming interface and one-wire digital EasyScale dimming interface and can realize 9-bit brightness code programming.

The TPS61162D integrates built-in soft start, overvoltage, and overcurrent protection, as well as thermal shutdown protections.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (MAX)
TPS61162D DSBGA (9) 1.336 mm × 1.336 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

TPS61162D typ_app_lvsc13.gif