UNISONIC TECHNOLOGIES CO., LTD

P34563

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2014 Unisonic Technologies Co., Ltd

QW-R103-074.a

PWM CONTROL 3A

STEP-DOWN CONVERTER

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DESCRIPTION

The UTC P34563 consists of step-down switching regulator

with PWM control.

The UTC P34563 provides low-ripple power, high efficiency,

and excellent transient characteristics. The PWM control circuit is

able to the duty ratio linearly forms 0 up to 100%. With the

addition of an internal P-channel Power MOS, and a diode

connected externally, these ICs can function as step-down

switching regulators. They serve as ideal power supply units for

portable devices when coupled with the HSOP-8 package,

providing such outstanding features as low current consumption.

Since this converter can accommodate an input voltage up to

40V.

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FEATURES

* Input voltage: 8V~40V

* Oscillation frequency: 100K/350KHz

* Duty ratio: 0%~100% PWM control

* Adjustable version output voltage range from 3.3V to 38V

* Enable and auto restart function.

* Short Circuit Protect (SCP).

* Thermal Shutdown function / Internal OVP.

* Built-in internal SW P-channel MOS.

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ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

P34563L-SH2-T

P34563G-SH2-T

HSOP-8

Tube

P34563L-SH2-R

P34563G-SH2-R

HSOP-8

Tape Reel

(1) T: Tube, R: Tape Reel

(2) SH2: HSOP-8

(3) L: Lead Free, G: Halogen Free

P34563L-SH2-T

(1)Packing Type

(2)Package Type

(3)Lead Free

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MARKING INFORMATION

PACKAGE

MARKING

HSOP-8