LP55231SQX/NOPB

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LP55231SQX/NOPB

9 Channel RGB / White LED Driver with Internal Program Memory and Integrated Charge Pump - WQFN

Packaging

Package | PIN: RTW | 24
Temp: S (-30 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.78
10-24 $1.59
25-99 $1.48
100-249 $1.29
250-499 $1.19
500-749 $1.00
750-999 $0.82
1000+ $0.75

Features

  • Three Independent Program Execution Engines, 9 Programmable Outputs With 25.5-mA Full-Scale Current, 8-Bit Current Setting Resolution and
    12-Bit PWM Control Resolution
  • Adaptive High-Efficiency 1×/1.5× Fractional Charge Pump - Efficiency up to 94%
  • LED Drive Efficiency Up to 93%
  • Charge Pump With Soft Start
  • Overcurrent and Short-Circuit Protection
  • Built-in LED Test
  • 200-nA Typical Standby Current
  • Automatic Power Save Mode; IVDD = 10 µA (Typical)
  • Two-Wire I2C-Compatible Control Interface
  • Flexible Instruction Set
  • Large SRAM Program Memory
  • Small Application Circuit
  • Source (High-Side) Drivers
  • Architecture Supports Color Control

Texas Instruments  LP55231SQX/NOPB

The LP55231 is a 9-channel LED driver designed to produce lighting effects for mobile devices. A high-efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device is equipped with an internal program memory, which allows operation without processor control.

The LP55231 has an I2C-compatible control interface with four pin-selectable addresses. The INT pin can be used to notify processor when a lighting sequence has ended (interrupt function). Also, the device has a trigger input interface, which allows synchronization, for example, between multiple LP55231 devices. Excellent efficiency is maintained over a wide operating range by autonomously selecting the best charge pump gain based on LED forward voltage requirements. The device is able to automatically enter power-save mode when LED outputs are not active, thus lowering idle current consumption down to 10 µA (typical). Only four small and low-cost ceramic capacitors are required.

For all available packages, see the orderable addendum at the end of the data sheet.