12-channel LED Driver Enhances Lighting Effects For Smart Devices

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Enables smoother and more natural interactions with smart-home devices, wearable electronics, and small appliances

STMicroelectronics’ LED1202 can operate independently of the main controller, enabling the 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. 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.

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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.

Key Features

  • Supply range from 2.6 V to 5 V
  • 8 programmable patterns and sequences
  • 20 mA current capability per channel

LED1202 12-channel LED driver enables smoother and more natural interactions with smart-home devices, wearable electronics, and small appliances.

Availability

Available now, the LED1202JR in 1.71mm x 2.16mm WLCSP-20 flip-chip is US$ 0.90 and the LED1202QTR in 3mm x 3mm VFQFPN-20 is US$ 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.

Visit LED1202 for more details

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