UB2011

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R121-028 .a



ABSOLUTE MAXIMUM RATING

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

3.0 ~ 7.0

V

Input Voltage

7

V

Open Drain Input Voltage

30

V

Input Offset Voltage

10

mV

Input Offset Current

500

nA

Junction Temperature

-25 ~ +85

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Constant Voltage Comparison

2.65

2.70

2.75

V

Constant Current Charging Current

210mV/Rs 235mV/Rs 260mV/Rs

mA

Trickle Charge Current

11mV/Rs 23mV/Rs 35mV/Rs

mA

Charging and Judging Current

1mV/Rs 23mV/Rs 35mV/Rs

mA

Control Drive Current

50

100

mA

LED Drive Current

10

mA

LED Flicker Frequency

0.5

2

Hz

Trickle Charge Voltage

0.9

1.0

1.1

V

Suspended Judgment

Voltage

V

Over Temperature

Voltage

V

Temperature End

Current Judgment Mode

V

Supply Current

350

μA



INDICATOR LIGHT DISPLAY LOGIC

STATE

POWER ON

NO BATTERY

(TEMPERATURE)

NO BATTERY

(CURRENT)

NORMAL

CHARGE

BATTERY

FULL

FAULT

LED

1KHz Output for

about 1S

H

H

L

H

L+H Resistance

Alternating Output