UB240

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

10 of 11

www.unisonic.com.tw

QW-R502-A07.b



TYPICAL APPLICATION CIRCUIT(Cont.)

(5) Connection Example 5 (for 1-cell)

BAT1

R1

C1

VC1

VC2

VC3

VC4

OUT

UTC

UB240

Series

EB+

EB-

FET

SC PROTECTOR

CD

Constants for External Components 5

SYMBOL

MIN

TYP

MAX

UNIT

R1

0

1 k

10 k

Ω

C1

0

0.1

1

μF

0

100

1 k

Ω

0

0.1

1

μF

0

0.1

1

μF

Notes:

1.

The above constants may be changed without notice.

2.

It has not been confirmed whether the operation is normal or not in circuits other than the above

example of connection. In addition, the example of connection shown above and the constant do not

guarantee proper operation. Perform through evaluation using the actual application to set the

constant.



PRECAUTIONS

1.

DO NOT connect any of overcharged batteries. Even if only one overcharged battery is connected to this IC,

the IC detects overcharge, then charge current flows to the delay capacitor through the parasitic diode between

pins where the battery is not connected yet. This may lead to a malfunction. Please perform sufficient

evaluation in the case of use. Depending on an application circuit, even when the fault charge battery is not

contained, the connection turn of a battery may be restricted in order to prevent the output of OUT detection

pulse at the time of battery connection.

2.

Any position from V1 to V4 can be used when applying this IC for a one to three-cell battery. However, be sure

3.

The application conditions for the input voltage, output voltage, and load current should not exceed the package

power dissipation.

4.

Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in

electrostatic protection circuit.