UC3842G(2007) Просмотр технического описания (PDF) - Unisonic Technologies

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производитель

UC3842G
(Rev.:2007)

HIGH PERFORMANCE CURRENT MODE CONTROLLER

Unisonic Technologies 

UC3842G

„ OPEN-LOOP TEST CIRCUIT

LINEAR INTEGRATED CIRCUIT

Ra

VIN

100k

or

VCOMP

Rb

100k

VFB

1

10p

2

COMP

FB

Vpwl

adjust 5K

CT

3.3n

3 CS

4 CT

VREF 8

VCC 7

VCC

Output 6

GND 5

CIN

470μ

High peak current associated with capacity loads necessitate careful grounding techniques. Timing and bypass

capacitors should be connected close to pin5 in single point GND.

„ UNDER-VOLTAGE LOCKOUT

During Under-Voltage Lockout, the output driver is biased to a high impedance state. Pin6 should be shunt to

GND with a bleeder resistor to prevent activing the power switch with output leakage currents.

„ ERROR AMPLIFIER CONFIGURATION

Error amplifier can source or sink up to 0.5mA

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

6 of 8

QW-R103-036,A

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