STEVAL-TLL012V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Full RGB function support

STEVAL-TLL012V1
4-channel LED driver with charge pump based on the STP4CMP
Features
■ Operating voltage range: 2.7 V to 5.5 V
■ Full RGB function support
■ 4-channel LED driver with individual ON/OFF
control directly from input pins
■ Individual programmable output current for the
4 channels through 4 external resistors with a
max. capability of 30 mA
■ Absolute output current accuracy of max. ±7%
and channel-to-channel mismatch of max. ±
4%
■ Selectable charge pump enable/disable
■ Thermal protection
■ RoHS compliant
Description
The STEVAL-TLL012V1 demonstration board
demonstrates the performance of the STP4CMP,
a charge pump based 4-channel LED driver
designed for RGB illumination or LCD display
backlighting.
This device works off a battery with an input
voltage between 2.7 V - 5.5 V. The device
generates regulated current sinks with high
absolute and channel-to-channel accuracy to
drive up to 4 LEDs.
It can support LEDs with forward voltage as high
as 3.8 V.
The current sink for each channel can be set with
4 individual external resistors. Each channel is
controlled independently.
The PWM control can be applied directly to the 4
EN (enable) inputs to provide brightness control.
Data brief
June 2012
Doc ID 023248 Rev 1
For further information contact your local STMicroelectronics sales office.
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