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| fp520 5 non - synchronous pwm b oost c ontroller this datasheet contains new product information. feeling technology reserves the rights to modify the product specification without notice. no li ability is assumed as a result of the use of this product. no rights under any patent accompany the sales of the product. website: http://www.feeling - tech.com.tw rev. 0. 6 0 1 / 10 general description the fp 5205 is a boost topology switching regulator for wide operating voltage applications. it provides built - in gate driver pin for driving an external n - mosfet . the internal compensation network minimizes external component counts, and the non - inverting input of error amplifier connects to a 0.6v precision reference voltage. the fp520 5 ha s internal soft start and programmable over current protection set by external resistance. the fp 5205 is available in the small footprint sot23 - 6l p ackage to fit in space - saving pcb layout for miscellaneous application fields. features ? wide supply voltage operating range: 2.4 to 5.5v ? precision feedback ref er ence voltage : 0.6v (2%) ? shutdown current : < 1a ? internal fixed pwm frequency : 5 5 0khz ? intern al soft start function :7ms (ss) ? over c urrent protection function ( o cp) ? over voltage protection ? package: sot23 - 6l ? duty cycle: pwm/pfm switching control circuit (15%~90%) applications ? chargers ? lcd displays ? digital cameras ? handheld devices ? portable produc ts typical application circuit f p 5 2 0 5 o c f b e x t e n 2 3 g n d 4 6 5 v o u t v i n v c c 1 l o a d o n / o f f
fp 5205 this datasheet contains new product information. feeling technology reserves the rights to modify the product specification without notice. no li ability is assumed as a result of the use of this product. no rights under any patent accompany the sales of the product. website: http://www.feeling - tech.com.tw rev. 0. 6 0 2 / 10 function block diagram pin descriptions so t23 - 6 l name no. i / o description v cc 1 p ic power supply oc 2 i adjustable output current protection fb 3 i error amplifier inverting input en 4 i enable control (acti ve high) gnd 5 p ic ground ext 6 o external transistor connection pin p w m c o m p . e r r o r a m p . c o n t r o l a n d d r i v e r l o g i c o s c i l l a t o r e x t v c c e n u v l o s h u t d o w n c i r c u i t r y f b 0 . 6 v 5 5 0 k h z s o f t s t a r t g n d v r a m p o c p o c 0 . 1 v 1 2 3 6 5 4 v c c e n o c f b b f 9 8 6 t o p v i e w g n d e x t |
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