UNISONIC TECHNOLOGIES CO., LTD

P1484

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R103-060.B

3A, 23V, 340KHZ

SYNCHRONOUS RECTIFIED

STEP-DOWN CONVERTER

DESCRIPTION

The UTC P1484 is a synchronous buck regulator. The device

provides3A of continuous load current over a wide input voltage

of 5V~23V. Current mode control provides fast transient response

and cycle-bycycle current limit. An adjustable soft-start prevents

inrush current at turn-on

The UTC P1484 can provide low-ripple power, high efficiency,

and perfect transient characteristics. The duty ratio varies linearly

from 0% to 92% in the PWM control. The error amplifier circuit

and soft-start circuit included in this device can prevent overshoot

at startup. An enable function, an over current protect (OCP)

function and short circuit protect (SCP) are also build inside, and

when OCP happens, the operation frequency will be reduced.

FEATURES

* 3A Output Current

* Wide 6V~23V Operating Input Range

* Integrated Power MOSFET Switches

* Programmable Soft-Start

* Stable with Low ESR Ceramic Output Capacitors

* Fixed 340KHz Frequency

* Cycle-by-Cycle Over Current Protection

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ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

P1484L-S08-R

P1484G-S08-R

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Tape Reel

P1484L-S08-T

P1484G-S08-T

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