UA7527

Preliminary

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R114-003.b

PIN CONFIGURATION

PIN DESCRIPTION

PIN NO.

PIN NAME

DESCRIPTION

1

INV

The inverting input of the error amplifier. The output of the boost converter should be

resistively divided to 2.5V and connected to this pin.

2

EA_OUT

The error amplifier output. A feedback compensation network is placed between this pin

and the INV pin.

3

MULT

Input to the multiplier stage. Full-wave rectified AC voltage is divided into a voltage less

than 2V and is connected to this pin.

4

CS

Input of the Pulse-Width Modulation comparator. Current is sensed in the boost stage

MOSFET by a resistor in the source lead. An internal R / C filter can filter out any

high frequency noise.

5

Input to zero current detection.

6

GND

The IC ground.

7

OUT

Gate driver output. This pin provides an output to an external Power MOSFET with

peak current of 500mA.

8

The positive supply of the device.