product brief CP2130 dc/dc series high efficiency 1x/1.5x fractiona l charge pump for white led copyright ?2006 chiphomer technology limited 1 overview the CP2130 is optimized for white led supplies in backlit color display applications. the device pr ovides 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 or three to four nicd, nimh, or alkaline battery cells. the CP2130 provides up to 30 ma pe r led, for a total of 1 50 ma, for input voltages ranging from 3 v to 5.5 v. high efficiency is achieved by utili zing a 1x/1.5x adaptive fractional conversion technique in combination with very lo w dropout current sources. only two external 1f and two 0.47 f capacitors are required to build a complete small and low cost power supply solution. the CP2130 switches at 1 mhz operating fre quency and is available in a small 16-pin qfn package to keep board space to a minimum. features drives up to 5 leds at 30 ma each regulated output current with 0.5% matching over temperature led brightness control th rough pwm control signal 0hz 50khz low input ripple and low emi over-current and over-temperature protected less than 0.1 a quiescent current in shutdown mode rohs compliant and 100% lead (pb)-free pin diagram (top view) 1 2 7 6 3 4 5 8 9 10 11 12 13 14 15 vin gnd en1 en2 iset c2- c1+ vout pgnd d1 d2 d5 d4 c1- c2+ d3 CP2130 16 3mm*3mm qfn 16l -40 85
product brief CP2130 dc/dc series high efficiency 1x/1.5x fractiona l charge pump for white led copyright ?2006 chiphomer technology limited 2 applications cell phone digital camera mp3,pmp,pda typical application CP2130 c2- c1- c1+ c2+ 1 f vin r iset 1 f cout cin d1 d2 d3 d4 vout en1 gnd iset en2 d5 pgnd c2 c1 li-ion battery + - 0.47 f 0.47 f related products cp2133 high efficiency 1x/1.5x fractiona l charge pump for white led cp2131 high efficiency 1x/1.5x fractiona l charge pump for white led chiphomer technology limited add: 4f, building d, 1618 yishan road, shanghai, p.r.c. tel: +86-(0)21-64058488, 64014543 fax: +86-(0)21-64050030 email: sales@chiphomer.com web: www.chiphomer.com shenzhen office: 10d, building 2, dushi yangguang garden chegongmiao, futian district, shenzhen, 518048, p.r.c. tel: (86)755-82046706, 82047789 fax: (86)755-82046709
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