UNISONIC TECHNOLOGIES CO., LTD

UM601/A

Preliminary

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2010 Unisonic Technologies Co., Ltd

QW-R105-028.B

VOLTAGE AND CURRENT

CONTROLLER

DESCRIPTION

The UTC UM601/A integrated circuit incorporates a high stability

series band gap voltage reference, two ORed operational amplifiers and

a current source.

This IC compares the DC voltage and the current level at the

output of a switching power supply to an internal reference. It provides a

feedback through an optocoupler to the PWM controller IC in the primary

side.

The controlled current generator can be used to modify the level of

current limitation by offsetting the information coming from the current

sensing resistor.

It can be used in voltage supervisors, every types of application

requiring a precision voltage regulation and current limitation, over

voltage protection, battery charger with a constant voltage and a limited

output current.

FEATURES

* 1.24V Series Voltage Reference with 10mA Output Current and 1% Precision (UM601A)

* Two Operational Amplifiers with ORed Output and 1MHz Gain Bandwidth Product

* Built-In Current Generator with Enable / Disable Function

* 4.5 ~ 32V Supply Voltage Range

ORDERING INFORMATION

Ordering Number

Normal

Lead Free

Halogen Free

Package

Packing

UM601-S08-R

UM601L-S08-R

UM601G-S08-R

SOP-8

Tape Reel

UM601-D08-T

UM601L-D08-T

UM601G-D08-T

DIP-8

Tube

UM601A-S08-R

UM601AL-S08-R

UM601AG-S08-R

SOP-8

Tape Reel

UM601A-D08-T

UM601AL-D08-T

UM601AG-D08-T

DIP-8

Tube