DS2762 MAXIM [Maxim Integrated Products], DS2762 Datasheet - Page 6

• Manufacturer Part Number: DS2762
• Description: High-Precision Li+ Battery Monitor With Alerts
• Manufacturer: MAXIM [Maxim Integrated Products]

PIN DESCRIPTION
11, 12, 13
TSSOP
4, 5, 6
10
14
15
16
—
—
1
2
3
7
8
9
PIN
CHIP
FLIP
C1
C4
D4
D1
C2
D2
B1
B2
A3
B4
E4
F3
E2
E1
SYMBOL
Probe
Probe
SNS
SNS
PLS
PIO
V
CC
DC
DQ
IS2
IS1
V
V
V
PS
SS
DD
SS
IN
Charge Protection Control Output. Controls an external P-channel high-side charge
protection FET.
Battery Pack Positive Terminal Input. The DS2762 monitors the pack plus terminal
through PLS to detect overcurrent and overload conditions, as well as the presence of a
charge source. Additionally, a charge path to recover a deeply depleted cell is provided
from PLS to V
connected to PLS is discharged internally to V
reliable detection of a valid charge source. For details of other internal connections to
PLS and associated conditions see the Li+ Protection Circuitry section.
Discharge Protection Control Output. Controls an external P-channel high-side
discharge protection FET.
Sense Resistor Connection. Connect to the negative terminal of the battery pack. In
the internal sense resistor configuration, the sense resistor is connected between V
and SNS.
Data Input/Out. 1-Wire data line. Open-drain output driver. Connect this pin to the DATA
terminal of the battery pack. Pin has an internal 1mA pulldown for sensing disconnection.
Current-Sense Input. This pin is internally connected to SNS through a 4.7kW resistor.
Current-Sense Input. This pin is internally connected to V
Connect a 0.1mF capacitor between IS1 and IS2 to complete a lowpass input filter.
Power Switch Sense Input. The device wakes up from sleep mode when it senses the
closure of a switch to V
Device Ground. Connect directly to the negative terminal of the Li+ cell. For the external
sense resistor configuration, connect the sense resistor between V
Programmable I/O Pin. Can be configured to be used to control and monitor user-
defined external circuitry or as an interrupt output to alert the host when preset current
accumulator or temperature limits are exceeded. Open drain to V
Power-Supply Input. Connect to the positive terminal of the Li+ cell through a
decoupling network.
Voltage Sense Input. The voltage of the Li+ cell is monitored through this input pin. This
pin has a weak pullup to V
Do not connect.
Do not connect.
DD
. In sleep mode (with SWEN = 0), any capacitance or voltage source
6 of 25
SS
on this pin. Pin has an internal 1mA pullup to V
DD
.
FUNCTION
SS
through 200µA (nominal) to assure
SS
through a 4.7kW resistor.
SS
SS
.
and SNS.
DD
.
SS