UNISONIC TECHNOLOGIES CO., LTD

P1484A

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2013 Unisonic Technologies Co., Ltd

QW-R103-063.A

3A, 23V, 340KHZ

SYNCHRONOUS RECTIFIED

STEP-DOWN CONVERTER

DESCRIPTION

The UTC P1484A 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 P1484A 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

P1484AL-HS2-R

P1484AG-HS2-R

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Tape Reel

P1484AL-HS2-T

P1484AG-HS2-T

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Tube