L5200

DESCRIPTION

The UTC L5200-xx series are low noise, constant frequency

charge pump DC/DC converters and designed to increase efficiency

in white LED application. The operating voltage range is 2.7V ~ V OUT

input with up to 100mA of output current. Low external parts counts

(one flying capacitor and two small bypass capacitors at V IN  and

V OUT ) make the UTC L5200-xx series ideally suited for small,

battery-powered applications.

A  charge-pump architecture maintains constant switching

frequency to zero load and reduces both output and input ripple. The

UTC L5200-xx series have thermal shutdown capability to escape

the device damaged from a continuous short-circuit. With built-in

soft-start circuitry to prevents excessive current flow at V IN during

start-up. High switching frequency enables the use of small ceramic

capacitors. A low-current shutdown feature disconnects the load from

V IN and reduces quiescent current to <1μA.

The  L5200-ADJ  is  available  in  MSOP-8  package  and

L5200-fixed in SOT-26 and TSOT-26 package.

 FEATURES

* Low Noise Constant Frequency Operation

* Output Current:

90mA@3.0V<V IN <5V

100mA@3.0V<V IN <4.5V

* 1MHz Switching Frequency

* 4.5V/5.0V Fixed Output Voltage

* V IN Range: 2.7V ~ V OUT

* Automatic Soft-Start.

* No Inductors

* Less than 1μA of Shutdown Current

规格书L5200