UB2012 데이터 시트보기 (PDF) - Unisonic Technologies

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UB2012

ADVANCED LINEAR CHARGE MANAGEMENT IC FOR SINGLE AND TWO-CELL LITHIUM-ION AND LITHIUM-POLYMER

Unisonic Technologies 

UB2012

LINEAR INTEGRATED CIRCUIT

 TYPICAL APPLICATION CIRCUIT

DC+

RSNS

0.2Ω

GND

C2

10μF

Q1

2SB1151

D1

R1

VCC

1kΩ

CC

COMP

SNS UB2012 BAT

VCC

TS

VSS

STAT

D2

R2

2kΩ

VCC

RT1

RT2

PACK+

C1

10μF

PACK-

TEMP

NTC

Battery

Pack

Fig. 1 0.5A Low Dropout Li-Lon/Li-Pol Charger

FUNCTIONAL DESCRIPTION

The UTC UB2012 is designed for the applications of single or two-cell Li-Ion or Li-Pol batteries. Fig. 1 is the

schematic of using this advanced linear charge controller with a PNP pass transistor. Fig. 2 is the operation flowchart

of UTC UB2012. Fig. 3 shows the typical charge profile. Fig. 4 is the application schematic of a charger using

P-channel MOSFET.

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

6 of 17

QW-R121-018 .G

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