UC3842G-S08-R datasheet(7/8 Pages) UTC

전자부품 데이터시트 검색엔진

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UC3842G-S08-R 데이터시트(PDF) 7 Page - Unisonic Technologies

부품명	UC3842G-S08-R

상세설명	HIGH PERFORMANCE CURRENT MODE CONTROLLER

PDF	8 Pages

Scroll/Zoom	100%

제조업체	UTC [Unisonic Technologies]

홈페이지	http://www.utc-ic.com

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7 / 8 page

UC3842G

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

7 of 8

www.unisonic.com.tw

QW-R103-036,A

CURRENT SENSE CIRCUIT

R1V

Error Amplifier

Current Sense Comparator

Peak current (IS) determined by the formula: ISMAX=1V/Rs. A small RC filter be required to suppress switch

transients

OSCILLATOR AND STANDBY MODE

We can judge the state of output load through the voltage of PIN1. In order to reduce the standby power, it will

reduce the OSC frequency at right load. When VCOMP≤2.2V, the OSC frequency begins to reduce. The normal

frequency is 52KHz, the minimum frequency is 14KHz.

2.2V

1.2V

Standby mode

Minimum frequency :14KHz

Normal

Frequency: 52KHz

Normal

Frequency: 52KHz

VCOMP

Increase

OSC triangle wave

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