ICS1712M GALAXY [Galaxy Power, Inc.], ICS1712M Datasheet - Page 2

• Manufacturer Part Number: ICS1712M
• Description: Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries
• Manufacturer: GALAXY [Galaxy Power, Inc.]

ICS1712
Pin Configuration
Pin Definitions
Note:
Number
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Pins 6, 9, 10 and 13 have an internal pull-up.
Pin 12 has an internal pull-down.
Pin Name
THERM
DTSEL
DCHG
unused
AVSS
CMN
SEL0
SEL1
MRN
VDD
CHG
OTN
PFN
VSS
VIN
RC
Type
OUT
OUT
OUT
OUT
OUT
IN
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.
Selects temperature slope and/or voltage slope termination
Thermistor or thermal switch input for temperature sensing.
Battery voltage normalized to one cell with an external resistor divider.
Ground.
Device supply =+5.0 VDC
DCHG
AVSS
SEL0
CMN
CHG
OTN
VSS
PFN
16-Pin DIP or SOIC
1
2
3
4
5
6
7
8
ICS1712
2
16
15
14
13
12
11
10
9
Definition
unused
VIN
VDD
THERM
DTSEL
RC
MRN
SEL1