ICS1702 Galaxy Power, Inc., ICS1702 Datasheet - Page 12

• Manufacturer Part Number: ICS1702
• Description: 20 Pin Quicksaver Full-featured Charge Controller For Ni-cd & Ni-mh Batteries.
• Manufacturer: Galaxy Power, Inc.

ICS1702
See the section on Controller Operation for additional information on the topping charge and maintenance charge. See the section on Charge Termination
Methods for additional information on the charge timer.
Mode Selection: AUX0, AUX1 Pins
The AUX0 and AUX1 inputs must be programmed by the user to
inform the ICS1702 of the desired auxiliary mode. When left
unconnected (open) these tri-level pins will float to about 2.3V.
When a low level is required, the pin must be grounded.
AUX0
SEL0
H
H
H
H
H
H
L
L
L
Z
Z
Z
L
L
Z
Z
AUX1
SEL1
H
H
H
H
H
L
Z
L
Z
L
Z
L
Z
L
L
Z
Charging System Test
Direct Maintenance
Fast Charge
Discharge-Only
Discharge-to-Charge
Condition
Ten Hour Timer
C/2.5 (150 min)
C/1.5 (90 min)
C/2 (120 min)
C/3 (180 min)
C/4 (240 min)
1.3C (45 min)
Charge Rate
4C (15 min)
2C (30 min)
1C (60 min)
Mode Selected
Table 4: Charge Rate List
Table 5: Mode Select List
Topping Charge
one every 40 sec
one every 20 sec
one every 13 sec
one every 10 sec
one every 7 sec
one every 5 sec
one every 4 sec
one every 3 sec
one every 2 sec
pulse Rate
Charging system test for embedded applications
Indefinite C/40 maintenance charge
Default
Battery discharge to 1V/cell
Battery discharge to 1V/cell followed by the selected charge mode
Timed C/10 topping charge followed by a C/40 maintenance charge
Limits total charge including the maintenance charge to 10 hours
12
When a high level is required, the pin must be tied to V
voltage ranges for low (L), open (Z) and high (H) are listed in
Table 10, DC Characteristics. To program the AUX0 and AUX1
inputs, refer to the Mode Select List in Table 5. See the section on
Auxiliary Modes of Operation for additional information.
Maintenance Charge Pulse
one every 160 sec
one every 80 sec
one every 53 sec
one every 40 sec
one every 27 sec
one every 20 sec
one every 16 sec
one every 13 sec
one every 10 sec
Mode Operation
Rate
Duration (after reset)
Fast Charge Timer
110 min
144 min
212 min
244 min
275 min
21 min
39 min
57 min
75 min
DD
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