STMicroelectronics LED1202

The LED1202 is a 12-channel low quiescent current LED driver; it guarantees 5 V output driving capability and each channel is able to provide up to 20 mA with a headroom voltage of 350 mV (typ.) only. The output current can be adjusted separately for each channel by 8-bit analog and 12-bit digital dimming control. A slow turn-on and turn-off time improves the system low noise generation performance; moreover, the phase shifting function helps to reduce the inrush current. Eight patterns can be stored in the internal registers for automatic sequencing without MCU intervention.

Key features

• Supply range from 2.6 V to 5 V
• 12 channels for single LED
• 20 mA current capability per channel
• 1% (typ.) current matching at 16 mA and 2% (typ.) at 2.5 mA

Additional features

• Supply range from 2.6 V to 5 V
• 12 channels for single LED
• 20 mA current capability per channel
• 1% (typ.) current matching at 16 mA and 2% (typ.) at 2.5 mA
• 1.8 V compatible I²C control interface
• 8-bit analog dimming individual control
• 12-bit local PWM resolution
• 8 programmable patterns
• Programmable pattern sequence
• Synchronization for multi-device application
• Phase shifting between channels
• Open LED detection
• Overtemperature protection
• 8 configurable I²C slave addresses plus global address
• Fault flag pin

Applications

RGB LED lighting, fade-in and fade-out breathing effect indicator lights for:

• Wearable electronics
• Battery powered devices
• Portable accessories

Available tools

 

STEVAL-LLL007V1:

Evaluation kit for the LED1202 12-channel low quiescent current LED driver

The STEVAL-LLL007V1 kit consists of the STEVAL-LLL007M1 main board and the STEVAL-LLL007D1 and STEVAL-LLL007D2 panel boards. To help you evaluate all the features of the LED1202 driver, you can connect the main board to a NUCLEO-L073RZ development platform running the STSW-LLL007FW firmware, which comes with pre-configured random and wave patterns for use in standalone mode.

DATASHEET

 

STEVAL-LLL011V1:

Evaluation board for the 12-Channel LED1202 low quiescent current LED driver

The STEVAL-LLL007V1 kit consists of the STEVAL-LLL007M1 main board and the STEVAL-LLL007D1 and STEVAL-LLL007D2 panel boards. To help you evaluate all the features of the LED1202 driver, you can connect the main board to a NUCLEO-L073RZ development platform running the STSW-LLL007FW firmware, which comes with pre-configured random and wave patterns for use in standalone mode.

DATASHEET

 

X-NUCLEO-LED12A1:

LED driver expansion board based on LED1202 device for STM32 Nucleo

The X-NUCLEO-LED12A1 LED driver expansion board for STM32 Nucleo features four LED1202 devices that can drive up to 48 LEDs. The LED1202 is a 12-channel low quiescent current LED driver, which guarantees 5 V output driving capability. Each channel is able to provide up to 20 mA with a headroom voltage of 350 mV (typ.) only. The output current can be adjusted separately for each channel through an 8-bit analog and 12-bit digital dimming control

DATASHEET