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OMPCA9957LEDEV
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24-Channel SPI Serial Bus 32 MA/5.5 V Constant-Current LED Driver.
PCA9957 Evalaution board
- OMPCA9957LEDEV Evaluation board
PCA9957 LED Driver Evaluation Board
The OMPCA9957LEDEV, PCA9957 evaluation board, features LEDs for color mixing, blinking and dimming demonstrations. A graphical interface allows the user to easily explore the different functions of the driver.
The board can be connected in series with other SPI-bus demoboards.
Product Details
Supported Devices
Power Management
LED Drivers
- PCA9957: 24-Channel SPI Serial Bus 32 MA/5.5 V Constant-Current LED Driver
Features
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
Buy Options
Documentation
Quick reference to our documentation types.
2 documents
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User Guide
PCA9957 Evaluation board OMPCA9957LEDEVGetting Started
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User Guide
Getting Started with the OMPCA9957LEDEVGetting Started
Design Resources
Design Files
Quick reference to our
design files types.
2 design files
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Printed Circuit Boards and Schematics
OMPCA9957LEDEV Schematics
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Design Files - miscellaneous
OMPCA9957LEDEV Design Files
Software
Quick reference to our software types.
1 software file
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Debugging and Visualization Tools
GUI for PCA9957 LED driver family
Note: For better experience, software downloads are recommended on desktop.