GENERAL DESCRIPTION
The CP2137 provides up to 30 mA per LED, for a total of 120 mA, for input voltages ranging from 3 V to 5.5 V. High efficiency is achieved by utilizing a 1x/1.5x adaptive fractional conversion technique in combination with very low dropout current sources. Only two external 1µF and two 0.1 µF capacitors are required to build a complete small and low cost power supply solution. QFN 3×3 16L -40℃～85℃ FEATURES
y y y y y y y y Drives up to 4 LEDs at 30 mA Each Regulated Output Current With 0.5% Matching Over Temperature High Efficiency by Adaptive Mode Selection Between 1x and 1.5x Modes LED Brightness Control Through PWM Control Signal（0Hz～50KHz） Low Input Ripple and Low EMI Over-current and Over-temperature Protected Less than 0.1μA Quiescent Current In Shutdown Mode RoHS Compliant and 100% Lead (Pb)-Free APPLICATIONS
y y y Cell phone Digital Camera MP3,PMP,PDA Pin Configurations QFN-16L Top View PGND C2N C1N C2P QFN-16L Marking 12 11 10 9 LED4 LED3 LED2 LED1 13 8 C1P V...
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