供应平芯微PWM/PFM升压转换IC-PW5200A代理商

generaldescription

the pw5200ais high efficiency synchronous, pwm step-updc/dc converters optimized to provide a high efficient solution tomedium power systems. the devices work with a 1.4mhzuency switching. these features minimize overall solutionfootprint by allowing the use of tiny, low profile inductors andceramic capacitors. automatic pwm/pfm mode switching at light loadsaves power and improves efficiency.

the pw5200a is capable of supplying an output voltage between2.5v and 5v, the internal synchronous switch is desired to providehigh efficiency without schottky.

features

l  up to 94% efficiency

l  shut-down current: <1μa

l  load current: up to 500ma

l  input voltage：pw5200a: 1v to4.4v，pw5200c: 2v to 4.4v

l  output voltage: 2.5v to 5v (up to5v with schottky)

l  low switch on resistance rds(on),internal switch: 0.35Ω

l  1.4mhz fixed frequencyswitching

l  automatic pwm/pfm modeswitching

l  low profile sot-23-6l package

applications

l  digital cameras and mp3

l  palmtop computers / pdas

l  cellular phones

l  wireless handsets and dslmodems

l  pc cards

l  portable media players