| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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2,500 pcs
|
2500 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
1,149 pcs
|
1149 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The PCA9956BTWY is an I2C-bus controlled 24-channel constant current LED driver from NXP Semiconductors, designed for dimming and blinking Red/Green/Blue/Amber (RGBA) LEDs. It operates with a supply voltage range of 3 V to 5.5 V, and its constant current sink LED outputs can handle up to 20 V for the LED supply. Each LED output offers individual 8-bit resolution PWM control for precise brightness settings, operating at a fixed frequency of 31.25 kHz. Additionally, an 8-bit group PWM controller allows for synchronized dimming or blinking of all LEDs.
The device supports a peak output current adjustable from 225 µA to 57 mA via an 8-bit linear DAC. It includes built-in circuitry for open, short load, and overtemperature detection, with error information readable via the I2C-bus. A thermal shutdown feature provides further protection. The PCA9956BTWY utilizes a Fast-mode Plus (Fm+) I2C-bus interface, enabling higher frequency or more densely populated bus operation. The active LOW output enable pin (OE) can be used for external PWM control.
Packaged in a 38-HTSSOP, the PCA9956BTWY is suitable for surface mount applications. Its features make it ideal for amusement products and backlighting applications where precise LED control is required. The device also supports software programmable group addresses for flexible control of multiple devices on the same bus.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.17 | $0.17 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
3 V to 5.5 V.
38-HTSSOP and 38-TFSOP with exposed pad, surface mount.
-40°C to 85°C.
24 outputs.
I2C (Fast-mode Plus).
57 mA, adjustable from 225 µA via an 8-bit DAC.
Yes, with individual PWM at 31.25 kHz and group PWM at 122 Hz (adjustable frequency).