OMPCA9957LEDEV: PCA9957 LED Driver Evaluation Board

24-channel SPI serial bus 32 mA/5.5 V constant current LED driver

Overview

Target Applications

  1. Keypad backlights
  2. LED displays
  3. RGB or RGBA LED drivers
OMPCA9957LEDEV top view
OMPCA9957LEDEV isometric view
OMPCA9957LEDEV bottom view
Posts and screws
USB cable USB-A micro
OMPCA9957LEDEV top view

OMPCA9957LEDEV top view  

OMPCA9957LEDEV isometric view

OMPCA9957LEDEV isometric view  

OMPCA9957LEDEV bottom view

OMPCA9957LEDEV bottom view  

Posts and screws

Posts and screws  

USB cable USB-A micro

USB cable USB-A micro  

Specifications

Supported Devices

Power Management

I2C LED Controllers
  • PCA9957 : 24-Channel SPI Serial Bus 32 MA/5.5 V Constant-Current LED Driver

MoreLess

Technical and Functional Specifications

Gradation control
  • Each channel can be assigned to one of six gradation control groups
  • Programmable gradation time and rate for ramp-up and/or ramp-down operations
  • Programmable step time from 0.5 ms (min) to 512 ms (max)
  • Programmable final ramp-up and hold-on current/time
  • Programmable brightness current output adjustment
Power
  • Supply voltage: 2.7 V to 5.5 V
  • Low standby current (170 µA)
LED current
  • 32 mA / 5.5 V output drive per channel
  • Output current accuracy:
    ±4% channel to channel
    ±6% chip to chip
  • Output current adjusts through resistor at REXT pin
Interface
  • 10 MHz SPI interface
  • Output Enable (/OE) pin

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  • OMPCA9957LEDEV   Active

  • 24-Channel SPI Serial Bus 32 MA/5.5 V Constant-Current LED Driver

  • PCA9957 Evalaution board

    • OMPCA9957LEDEV Evaluation board
    • OMPCA9957LEDEV
    • 1 @ US
    • $418.00
    • Use Coupon
    • Distributor

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Design Resources

Find the design resources to evaluate your OMPCA9957LEDEV development tool.

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Documents   ( 2 )

Design Resources   ( 2 )

Software   ( 1 )

Documents

User Guide  ( 2 )

  • Get Started with the OMPCA9957LEDEV

    This page will help guide you through the process of learning about your OMPCA9957LEDEV board.

    • GS-OMPCA9957LEDEV
    • Sep 7, 2020
    • GS-OMPCA9957LEDEV
    • English

  • PCA9957 Evaluation board OMPCA9957LEDEV

    The PCA9957 evaluation board features LEDs for color mixing, blinking and dimming demonstrations

    • PDF
    • Rev 1.0
    • Apr 27, 2020
    • 2.9 MB
    • UM11196
    • English

Design Resources

Design Tools & Files  ( 2 )

Printed Circuit Boards and Schematics  ( 1 )

Design Files - miscellaneous  ( 1 )

Software

Embedded Application Software  ( 1 )

Graphics, UI, and Human Machine Interface  ( 1 )

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