STMicroelectronics LED1202

12-Channel low quiescent current LED driver

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

 

 

 

 

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