NXP Semiconductors PCA9959 LED Lighting Driver

NXP Semiconductors PCA9959 LED Lighting Driver is a daisy-chain SPI-compatible 4-wire serial bus controlled 24-channel constant preset current LED driver. This driver is optimized for dimming and blinking 63mA Red/Green/Blue/Amber (RGBA) LEDs. Each LED output offers a 6-bit resolution (64 steps) preset current configuration with an absolute accuracy of ±8%. The PCA9959 driver operates with a supply voltage range of 2.7V to 5.5V and includes a built-in open short load and over-temperature detection circuitry. The PCA9959 LED lighting driver is designed to use a 4-wire read/write serial bus with a higher data clock frequency up to 10MHz. Typical applications include RGBA LED drivers, LED status information, IR coding communication, LED displays, LCD backlights, and keypad backlights for cellular phones.

The NXP Semiconductors PCA9959 LED Lighting Driver is offered in a compact 5.0mm x 5.0mm x 0.85mm HVQFN40 package, with a -40°C to +85°C operating temperature range.

Features

24 LED drivers with each output programmable at:
- OFF
- ON
- 6-bits programmable LED brightness
- Programmable LED output delay to reduce EMI and surge currents
Gradation control for all channels:
- Each channel can assign to one of four gradation control groups
- 64 grids for gradation control for each channel
- Programmable grid duration time
- Four preset current options for each channel during gradation control
Open/short load/overtemperature detection mode to detect individual LED errors
24 constant preset current output channels can sink up to 63mA and tolerate up to 5.5V when OFF
Output preset current adjusted through an external resistor (R_EXT input)

Output preset current accuracy:
- ±8% absolute accuracy with 60mA output current
- ±6.5% absolute accuracy with 30mA output current
- Maximum ±5% channel to channel variation
- Maximum ±7% device to device variation
Low standby preset current
Active LOW Output Enable (OE) input pin
2.7V to 5.5V operating power supply voltage range (V_DD)
5.5V tolerant inputs on non-LED pins
-40°C to 85°C operating temperature range
4-wire serial bus interface with 10MHz data clock rate
Internal power-on reset
Latch-up performance exceeds 100mA per JESD 78, Class II
ESD protection exceeds 2kV HBM per JESD22-A114
5.0mm x 5.0mm x 0.85mm HVQFN40 package

Applications

RGB or RGBA LED drivers
LED status Information
Keypad backlights for cellular phones or handheld devices
Fade-in and fade-out for breath light control

LED display
LCD backlights
IR coding communications that utilize preprogrammed sequence/brightness

Datasheets

Datasheet

Fact Sheet

Application Notes

Programming Guide

NXP Semiconductors PCA9959 LED Lighting Driver

Features

Applications

Datasheets

Application Notes

Videos

Block Diagram

Application Diagram

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