GSAC-8.507BC
BATTERY CHARGER
February 1994
1/4
Type
V
in
V
out
I
out
GSAC-8.507BC
230 V
RMS
8.5 V
700 mA
FEATURES
Charge of NiCd or NiMH batteries
Switch mode constant current generation
Three level charging current (fast, trickle, zero
charging current)
Overcharge detection by -
V and
T/
t under
internal microprocessor control
No discharge of the battery when charger is
turned off
Initial trickle charge for deeply discharged batter-
ies
Maximum battery voltage protection
Maximum battery temperature protection
Timer back up protection
Output short circuit protection
Detection of fault battery
Charge status displayed by LED
European or UK plug
DESCRIPTION
The GSAC-8.507BC is a high efficiency battery charger for connection to the mains and to be used with
5 cells NiCd and NiMH batteries.
Two versions of the INPUT PLUG ADAPTOR are available:
EUROPEAN VERSION : GSAC-8.507BC-1 (ORDERING NUMBER)
UK VERSION : GSAC-8.507BC-2 (ORDERING NUMBER)
(See pag. 3 for mechanical data)
ELECTRICAL CHARACTERISTICS (T
amb
= 25
C unless otherwise specified)
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
V
in
AC Input Voltage
Ich = 0 to 0.7A
187
230
264
Vrms
I
chf
Fast Charge Current
Vin = 187 to 264 Vrms
Vbattery = 5 to 8.2V
0.65
0.70
0.75
A
I
cht
Trickle Charge Current
Vin = 187 to 264 Vrms
Vbattery = 1 to 5V or
0
C < Tbatt < 10
C
or charge completed
20
30
40
mA
C
Returned Charge
Vin = 187 to 264 Vrms
95
%
V
batt
Maximum Battery
Voltage Protection
Vin = 187 to 264 Vrms
Ich = 0.7A
8.2
8.5
8.7
V
T
co
Battery
Temperature Cut Off
Vin = 187 to 264 Vrms
Ich = 0.0A
50
C
t
out
Time Out Protection
Duration
Vin = 187 to 264 Vrms
Ich = 0.7A
2
hours
f
s
Switching Frequency
Vin = 187 to 264 Vrms
Ich = 0.03 to 0.7A
100
kHz
T
op
Operating Ambient
Temperature Range
-20
+60
C
T
stg
Storage Temperature
Range
-25
+85
C
2/4
Status
Condition
Red ON
- Fast charge
(Ich = 0,7A)
Green ON
- Charge Completed
(Ich = 0.03A)
- Timer elapsed
Red Flashing
Anomalous battery conditions
(Ich = 0.0A)
- Initial Tbattery < 0
C
- Initial Tbattery > 40
C
- Tbattery > 50
C
- Faulty battery
Green Flashing
(Ich = 0.03A)
- Initial charge of deeply discharged batteries
- 0
C < Tbatt < 10
C
OFF
Battery not connected
NOTES
1 - The battery temperature detection is a function
of the characteristics of the NTC resistor used
inside the battery pack. Please consult factory.
2 - Different fast charge and trickle charge currents,
and different time out are available on request
(Maximum charge current cannot exceed 1A).
3 - For connector to the battery pack please consult
factory.
GSAC-8.507BC
3/4
8 (0.31)
6 (0.24)
18.5
(0.73)
4 (0.16)
7 (0.28)
8.8 (0.35)
8.5
(0.33)
1 (0.04)
18
(0.71)
5 (0.20)
4 (0.16)
13.5 (0.53)
36 (1.42)
2 (0.07)
3 (0.12)
20 (0.79)
77 (3.03)
18.5
(0.73)
34 (1.34)
52.5
(2.07)
90
(3.54)
92 (3.62)
15 (0.59)
8 (0.31)
6 (0.24)
8.5
(0.33)
1 (0.04)
18
(0.71)
5 (0.20)
36 (1.42)
2 (0.07)
3 (0.12)
20 (0.79)
77 (3.03)
52.5
(2.07)
87
(3.43)
92 (3.62)
15 (0.59)
18
(0.71)
11.5
(0.45)
22.5
(0.86)
6.35
(0.25)
22.2
(0.87)
14
(0.55)
4 (0.16)
8 (0.31)
9.8
(0.39)
4 (0.16)
22.2 (0.87)
50 (1.97)
3 Wires:
+ Vout RED
- Vout BLACK
NTC Green
Total cable length
= 2000 (78.8)
European Plug Version
UK Plug Version
European View
Bicolor LED
Bicolor LED
Output connector to be defined according to customer specifications
Dimensions in mm (inches).
CONNECTION DIAGRAM AND MECHANICAL DATA
GSAC-8.507BC
4/4
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectronics.
1994 SGS-THOMSON Microelectronics All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
GSAC-8.507BC
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