製品概要

概要

The STP4CMP is a charge-pump-based 4-channel LED driver designed for RGB illumination or LCD display backlighting. The STP4CMP works off a battery with an input voltage between 2.7 V and 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) pins to provide brightness control. When enabled, the charge pump, which uses a small ceramic bucket capacitor between C_1P and C_1N, operates to regulate the V_OUT with a clamping voltage at typ. 5 V. The tiny QFN20 (1.8x3.2 mm) package allows the device to be also used for applications with space limitations.

特徴
Operating voltage range: V_CC 2.7 V to 5.5 V

Full RGB function support

4-channel LED driver with individual ON/OFF control directly from input pins

Individually 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

Small QFN20 (1.8x3.2 mm) package
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	製品型番	ステータス	概要	タイプ	サプライヤ
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