ICS1700A Datasheet, PDF (17/24 Pages) List of Unclassifed Manufacturers – QuickSaver Charge Controller for Nickel-Cadmium and Nickel-Metal Hydride Batteries

ICS1700A
Vin
CONSTANT
CURRENT
SOURCE
+5V +5V
Q1 (note 2)
390 390
(note 3)
1k
1
2
FAULT 3
CHG 4
TEMP 5
6
7
8
R3 (note 1)
+ 5 V (note 5)
ICS1700A
CHG
VDD 16
DCHG unused 15
PFN
VIN 14
4.7µF
CMN
VREF 13
OTN THERM 12
SEL0
VSS
AVSS
RC 11
MRN 10
SEL1 9
.047µF
+5V
16k
R1
R2
.047µF
+5V
27k (note 4)
temperature
sense
options
100pF
(note 6)
10kΩ
@ 25°C
Notes:
1) Value of R3 determined by discharge current and capacity of battery pack.
2) Discharge FET is logic-level compatible in this application.
3) DC return of discharge FET must be connected close to negative battery terminal.
4) Resistor is needed only if a thermistor is used. Value may change depending on thermistor.
5) Regulated supply
6) Power ground; others are signal ground. Connect signal ground to power ground
at negative battery terminal only.
open
@ 45°C
Figure 12: Functional Diagram
17