ICS1700A Datasheet, PDF (2/24 Pages) List of Unclassifed Manufacturers – QuickSaver Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries

ICS1700A
Pin Configuration
CHG
DCHG
PFN
CMN
OTN
SEL0
VSS
AVSS
1
16
2
15
3
14
4_ICS1700A13
5
12
6
11
7
10
8
9
VDD
unused
VIN
VREF
THERM
RC
MRN
SEL1
16-Pin DIP
20-Pin SOIC
Pin Definitions
Pin Number Pin Name Type
Definition
DIP SOIC
1
1
CHG
2
2
DCHG
3
3
PFN
4
5
CMN
5
7
OTN
6
7
8
9
10
11
12
13
14
15
16
Note:
8
SEL0
9
VSS
10
AVSS
11
SEL1
12
MRN
13
RC
14
THERM
16
VREF
18
VIN
19
unused
20
VDD
(DIP/SOIC)
Pin 6/8 has an internal pull-up.
Pin 9/11 has an internal pull-up.
Pin 10/12 has an internal pull-up.
Pin 12/14 has an internal pull-up.
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
Active high TTL compatible signal used to turn on an external current source to provide current to charge
the battery.
Active high TTL compatible signal available to turn on a discharge circuit.
Polling fault indicator. An active low turns on an external indicator to show the controller is either polling
for the presence of the battery or has determined the battery has been removed.
Charge mode indicator. A continuous low shows the controller is in a soft start or fast charge. The indicator
flashes during the topping and maintenance charges.
Out-of-temperature range indicator. An active low turns on an external indicator showing the battery is out
of the normal fast charge temperature range.
Input used with the SEL1 pin to program the device for the desired charge rate.
Ground.
Ground.
Input used with the SEL0 pin to program the device for the desired charge rate.
Master reset signal. A logic low pulse greater than 700 ms initiates a device reset.
An external resistor and capacitor sets the frequency of the internal clock.
Thermistor or thermal switch input for temperature sensing.
1.26V voltage reference.
Battery voltage normalized to one cell with an external resistor divider.
Ground.
Device supply =+5.0 VDC
Pins 4, 6, 15, and 17 are unconnected in the SOIC package.
2