DS2777G+ Maxim Integrated Products, DS2777G+ Datasheet - Page 8

• Manufacturer Part Number: DS2777G+
• Description: IC FUEL GAUGE LI+ 2CELL 14-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2777G+

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 4 V ~ 9.2 V
• Operating Temperature: -20°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2-Cell, Stand-Alone, Li+ Fuel-Gauge IC with
Protector and Optional SHA-1 Authentication
8
PIN
_______________________________________________________________________________________
10
11
12
13
14
—
1
2
3
4
5
6
7
8
9
SCL/OVD
SDA/DQ
NAME
SRC
V
V
SNS
V
V
PLS
PIO
CC
DC
VB
CP
EP
DD
IN2
IN1
SS
Charge Control. Charge FET control output.
Chip-Supply Input. Bypass with 0.1μF to V
Discharge Control. Discharge FET control output.
Battery Voltage Sense Input 2. Connect to highest voltage potential positive cell terminal through
decoupling network.
Battery Voltage Sense Input 1. Connect to lowest voltage potential positive cell terminal through
decoupling network.
Regulated Operating Voltage. Bypass with 0.1μF to V
Device Ground. Chip ground and battery-side sense resistor input.
Sense Resistor Connection. Pack-side sense resistor sense input.
Programmable I/O. Can be configured as wake input.
Pack Plus Terminal Sense Input. Used to detect the removal of short-circuit, discharge overcurrent, and
charge overcurrent conditions.
Data Input/Output. Serial data I/O, includes weak pulldown to detect system disconnect and can be
configured as wake input for 1-Wire devices.
Serial Clock Input/Overdrive Select. Communication clock for 2-wire devices/overdrive select pin for
1-Wire devices.
Protection MOSFET Source Connection. Used as a reference for the charge pump.
Charge Pump Output. Generates gate drive voltage for protection FETs. Bypass with 0.47μF to SRC.
Exposed Pad. Connect to ground or leave unconnected.
TOP VIEW
V
V
V
V
CC
DC
IN2
IN1
DD
VB
SS
1
2
3
4
5
6
7
+
(3mm
TDFN-EP
DS2775
DS2776
DS2777
DS2778
×
5mm)
SS
.
FUNCTION
EP
SS
14
13
12
11
10
.
9
8
CP
SRC
SCL/OVD
SDA/DQ
PLS
PIO
SNS
Pin Configuration
Pin Description