AIC1783

Battery Charge Controller

Analog Integrations Corporation

4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

www.analog.com.tw

DS-1783-00

May 28, 01

TEL: 886-3-5772500

FAX: 886-3-5772510

1

l

Fast Charge Control of NiMH/NiCd Batteries.

l

Fast Charge Termination by:

?V

−

,

?V

0

, Safety

Timer, Maximum Voltage.

l

Protection against Battery Voltage Fault.

l

Pulsed Trickle Charge Mode.

l

Quick and Easy Testing for Production.

l

8-pin DIP or SO Packages.

Battery Fast Chargers for:

l

Mobile Phones.

l

Notebook and Laptop Personal Computers.

l

Portable Power Tools and Toys.

l

Portable Communication Equipment.

l

Portable Video & Stereo Equipment.

The AIC1783 fast charge controller IC is designed

for intelligent charging of NiMH or NiCd batteries

without the risk of overcharge.

?V

−

detection

(-0.25%) and

?V

0

detection (peak voltage timer)

are

the

primary

methods

employed

by

the

AIC1783 to terminate fast charge. The fast charge

can also be cut off by maximum battery voltage

along with the safety timer to prevent charging

under fault conditions of the charging system or

the battery itself.

The safety timer period is adjustable for flexible

usage that AIC1783 could be applied in the wide

range of battery capacity. Test mode is provided

for charger manufactures to dramatically reduce

production test time.

REF

1

TIMER

2

MODE

3

GND

4

LED

5

ICON

6

VBT

7

VCC

8

U2

AIC1783

C4

0.1

µF

C1

1

µF

C3

0.1

µF

C7

1000P

C10

47nF

R10

0.3/5W

DC

1

DE

2

CF

3

GND

4

FB

5

VCC

6

IS

7

BOOST

8

U3

AIC1563

+

C8

220

µF

R9

390K

L1

220

µH

R1

1K

D2

1N5822

D1

1N5822

+

C2

220

µF

BAT1

+

C5

1

µF

+

C6

10

µF

R3

100K

R4

120K

Q1

2N222

R5

120K

+

C9

4.7

µF

D4

IN4148

D3

1N4148

R13

120/0.5W

R2

240K

R11 100K

VIN

R6

R7

47K

R8

10K

VIN

1

VOUT

3

2

GND

U1

7805

LED1

RED

R12

150K

Battery Charge Circuit with Wide Input Voltage Range