UM601A

DESCRIPTION

The UTC UM601A 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

规格书UM601A