Low voltage 4-channel constant current LED driver with charge pump
Input Voltage Min Volt2.7
Input Voltage Max Volt5.5
Supply Voltage Min Volt2.7
Supply Voltage Max Volt5.5
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius85.0
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
Package NameVFQFPN 20 3.2x1.8x0.5
Key Features
  • Operating voltage range: VCC 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

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 C1P and C1N, operates to regulate the VOUT 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.

In stock:
Range Unit Price Savings
1 - 9$2.240%
10 - 99$1.8916%
100 - 499$1.3141%
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