STMicroelectronics’ (ST) new LED1202 12-channel LED driver enables smoother and more natural interactions with smart-home devices, wearable electronics, and small appliances.
The LED1202 from ST can store eight programmable patterns and sequences and operate independently of the main controller, enables:
- Host system to save power while sophisticated lighting effects run continuously.
- 12-bit internal PWM dimming enables precision control of programmed sequences and the main controller can set 8-bit values for analog dimming via the driver’s I2C interface.
- Minimal external components are required to complete the driver circuit.
- With 12 output channels, a single LED1202 can drive four RGB LEDs at up to 20mA per channel.
- An innovative synchronization feature allows connecting up to eight LED1202 drivers to control larger LED arrays.
- In addition, superior low-current channel matching, within 2% (typical) at 2.5mA, enhances color consistency.
Phase shifting between channels minimizes current ripple and prevents excessive peak demand. Built-in safety features include open-LED detection, over-temperature protection, and a fault-flag pin.
Availability, Pricing and Packaging
Available now, the LED1202JR in 1.71mm x 2.16mm WLCSP-20 flip-chip is $0.90 and the LED1202QTR in 3mm x 3mm VFQFPN-20 is $1.15 for orders of 1000 pieces.
The STEVAL-LLL007V1 evaluation kit is available to support evaluation of the LED1202 and aids development of new products and lighting sequences.