SNVS873E August   2012  – November 2016 LP5560

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 Single-Wire Interface Timing Requirements
    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 LED Driver Headroom Voltage
      2. 7.3.2 Single-Wire Interface
        1. 7.3.2.1 Run Command
        2. 7.3.2.2 Training Start Command
        3. 7.3.2.3 Training End Command
        4. 7.3.2.4 Run-Once Command
      3. 7.3.3 Training Mode
        1. 7.3.3.1 Ending the Training Sequence
        2. 7.3.3.2 Reset to Default
        3. 7.3.3.3 Changing the LED Current
        4. 7.3.3.4 Entering Follow Mode
        5. 7.3.3.5 Timeout
      4. 7.3.4 LED Output Current Setting
      5. 7.3.5 Rise and Fall Time Settings
      6. 7.3.6 LED ON-Time Setting
      7. 7.3.7 LED OFF-Time Setting
    4. 7.4 Device Functional Modes
    5. 7.5 Programming
      1. 7.5.1 Default Sequence
    6. 7.6 Registers
      1. 7.6.1 Control Registers
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Step-by-Step Design Procedure
        2. 8.2.2.2 Running the Default Blinking Sequence
        3. 8.2.2.3 Programming New Blinking Sequence to the Memory
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • Wide Input-Voltage Range: 2.7 V to 5.5 V
  • Adjustable Output Current: 2.8 mA to 19.5 mA
  • Programmable Blinking Sequence with Current Rise and Fall Time Control
  • Default Blinking Sequence for Simple Systems Without Programming Capabilities
  • Single-Wire Interface
  • Constant Current High Side Output Driver
  • Very Low Headroom Voltage (40 mV Typical)
  • Ultra-Small Solution Size – No External Components

2 Applications

  • Indicator LEDs in Cell Phones and Other Portable Devices
  • Card Readers
  • Fuel Dispensers
  • Pedometers
  • Electronic Access Control
  • Where Simple Feedback is Needed

3 Description

The LP5560 is a programmable LED driver that can generate variety of blinking sequences with up to three pulses of different length per sequence. Blinking sequences can be programmed through a single-wire interface. Programmable parameters include on and off times as well as rise and fall times. Default sequence is programmed into the LP5560 to enable the use of device in simple systems without programming capabilities.

Very low headroom voltage eliminates the need for a boost converter. Indicator LEDs can be driven directly from the battery. Small package size combined with zero external components minimizes the solution size.

LP5560 is available in TI’s tiny 4-pin DSBGA package with 0.4-mm pitch.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LP5560 DSBGA (4) 0.886 mm × 0.886 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

LP5560 30172515.gif