CP2137 Datasheet | CHIP

Product Brief V1.0 DC/DC Series 4-Channel LED Driver with Adaptive Charge Pump Current Source General .. Description The CP2137 is optimized for white LED supplies in backlight color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 5.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell. The CP2137 provides up to 30 m A per LED, for a total of 120 m A, 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 bination with very low dropout current sources. Only two external 1µF and two 0.1 µF capacitors are required to build a plete 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 m A 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 Ro HS pliant 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 LED4 LED3 LED2 LED1 C1P VIN VOUT ISET 15 6 16 5 B7 XYZ CTRL0 CTRL1 AGND - Manufacture Data Code B7 - CP2137LQ Copyright ©2006 Chiphomer Technology Limited 1 Product Brief V1.0 DC/DC Series 4-Channel LED Driver with Adaptive Charge Pump Current Source Typical Application Circuit .. Contact with Chiphomer 4F, Building D, 1618 Yishan Road Shanghai, 201103, P.R.C. Tel: (86)21-64014543 64058488 Fax: (86)21-64050030 Sale: sales@chiphomer. Technical support: support@chiphomer. Web site: .chiphomer. Shenzhen...