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4-channel LED driver with STP4CMP based charge pump

STEVAL-TLL012V1

Overview

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.

Main 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

Design Files

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Update:2025-07-06 21:37:50

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