DS2715 Dallas Semiconducotr, DS2715 Datasheet - Page 4

• Manufacturer Part Number: DS2715
• Description: NiMH Battery Pack Charge Controller
• Manufacturer: Dallas Semiconducotr

Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
DETAILED PIN DESCRIPTION
PIN
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
MODE
NAME
SNS+
Voltages relative to V
Does not include current through V
Below this voltage no I/O pins are active.
Does not include tolerance of R
V
Specified temperature thresholds are only valid if recommended thermistor types are used.
Specification is guaranteed by design.
LED1
LED2
SNS-
V
C
THM
CTG
CTG
V
DIV
V
V
V
BIAS
R
BATT
BIAS
CH
DD
SS
SS
T
and resistor tolerances must be added to determine actual threshold.
Bypass for Internal Voltage Regulator
Cell Stack Charge Control Output
Ground Reference and Chip Supply Return
Charging Indicator Output
Done Indicator Output
Ground Reference and Chip Supply Return
Connect to Ground
Connect to Ground
Mode Select. Connect to V
mode of operation.
Thermistor Divider. Stable output to form a resistor divider for measuring
temperature on THM.
Positive Current Sense. Connect to the pack side of the sense resistor.
Negative Current Sense. Connect to the cell stack side of the sense resistor.
Chip Supply Input: +4.0V to +5.5V range.
Failsafe Timeout. Timeout is selected by an external resistor from R
Thermistor Input. Connect to a thermistor located in the cell pack and a divider
resistor from the Div pin.
Battery Voltage Sense Input. Connect to a divider from the positive terminal of the
cell stack to measure the voltage of a single cell.
SS
.
T
resistor.
CH
, R
T
, and DIV pins.
SS
for linear mode of operation or C
4 of 12
DESCRIPTION
BIAS
for comparator
T
to V
SS
.