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
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FEATURES
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.
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APPLICATIONS
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.
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DESCRIPTION
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.
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TYPICAL APPLICATION CIRCUIT
REF
1
TIMER
2
MODE
3
GND
4
LED
5
ICON
6
VBT
7
VCC
8
U2
AIC1783
C4
0.1
F
C1
1
F
C3
0.1
F
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
F
R9
390K
L1
220
H
R1
1K
D 2
1N5822
D1
1N5822
+
C2
220
F
BAT1
BATTERY
+
C5
1
F
+
C6
10
F
R3
100K
R4
120K
Q1
2N222
R5
120K
+
C9
4.7
F
D4
IN4148
D3
1N4148
R13
120/0.5W
R2
240K
R11 100K
VIN
R 6
6
8
0
R7
47K
R8
10K
VIN
1
VOUT
3
2
GND
U1
7805
LED1
RED
R12
150K
Battery Charge Circuit with Wide Input Voltage Range
AIC1783
2
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ORDERING INFORMATION
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
ORDER NUMBER
AIC1783CN
(PLASTIC DIP)
PIN CONFIGURATION
AIC1783C X
AIC1783CS
(PLASTIC SO)
1
3
2
8
6
7
4
5
REF
TIMER
MODE
GND
LED
VCC
VBT
ICON
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ABSOLUTE MAXIMUM RATINGS
Supply Voltage
............................................... ... ... ... ........................................ 5.5V
DC Voltage Applied on any pin ......................... ... ... ... ... ...................................... 5.5V
Sink current of ICON pin, LED1 and LED2 pin .......................... ... ... .................. 20mA
Operating Temperature Range
................................................ ... ... ...... -40C~ 85
C
Storage Temperature Range ................................................ ... ... ... ...... -65
C~ 150
C
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TEST CIRCUIT
+
8
7
6
5
4
3
2
1
AIC1783
LED
ICON
VBT
VCC
REF
TIMER
MODE
GND
RED
GREEN
5V
680
680
SOURCE
VOLTAGE
5V
R
TIMER
100K
120K
100K
5V
-
AIC1783
3
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ELECTRICAL CHARACTERISTICS
(Ta=25
C, V
CC
=5V, unless otherwise specified.)
PARAMETER
TEST CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
Supply Voltage
V
CC
4.5
5.0
5.5
V
Supply Current
I
CC
1.1
mA
Voltage Protection Limit
Battery Low
During Initial Timer
After Initial Timer
Battery High
V
BT
0.11
0.63
2.6
0.16
0.69
2.7
0.21
0.75
2.80
V
LED, ICON Pins
Output Impedance
ON
OFF
1
25
50
M
Input Impedance
MODE pin
300
K
VBT pin
1
M
Recommended
External Resistor of
TIMER pin
R
TIMER
2
100
1000
K
-
V Detection accuracy
VBT=2V
-0.15
-0.25
-0.35
%
AIC1783
4
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TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25
C, R
TIMER
=100K
,
V
CC
=5V, refer to Test Circuit)
Supply Current vs Supply Voltage
4.4
4.6
4.8
5.0
5.2
5.4
1.00
1.06
1.12
1.18
1.21
Supply Current (mA)
V
CC
(V)
4.4
4.6
4.8
5.0
5.2
5.4
79.0
79.5
80.0
80.5
81.0
Safety Timer vs Supply Volatge
Safety Timer (min.)
V
CC
(V)
4.4
4.6
4.8
5.0
5.2
5.4
3.8
4.0
4.2
4.4
4.6
4.8
LED Flashing Frequency vs Supply Voltage
Frequency (Hz)
V
CC
(V)
0
20
40
60
80
0.9
1.02
1.14
1.26
Supply Current vs Temperature
Supply Current (mA)
Temperature (
C)
0
20
40
60
80
79.0
80.0
81.0
82.0
Safety Timer vs Temperature
Safety Timer (min.)
Temperature(
C)
0
20
40
60
80
LED Flashing Frequency vs Temperature
3.4
3.8
4.2
4.6
5.0
Frequency (Hz)
Temperature(
C)
AIC1783
5
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TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
0
20
40
60
80
2.62
2.66
2.70
2.74
V
BT
(high) Limit vs Temperature
V
BT
(V)
Temperature (
C)
0
20
40
60
80
0.685
0.690
0.695
0.700
V
BT(LOW)
Limits vs Temperature
( After Initial Timer)
V
BT
(V)
Temperature (
C)
Temperature (
C)
0
20
40
60
80
0.158
0.159
0.160
0.161
0.162
0.163
V
B T
(low) Limit vs Temperature (During Initial Timer)
V
BT
(V)
Output Impedance vs Temperature
(LED,ICON pins)
Output Impedance(
)
Temperature (
C)
0
20
40
60
80
23
25
27
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