DS2784G+ Maxim Integrated Products, DS2784G+ Datasheet - Page 10

• Manufacturer Part Number: DS2784G+
• Description: IC FUEL GAUGE STND-ALONE 14-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of DS2784G+

• Function: Fuel, Gas Gauge/Monitor
• Battery Type: Lithium-Ion (Li-Ion), Lithium-Polymer (Li-Pol)
• Voltage - Supply: 2.5 V ~ 4.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TDFN
• Product: Fuel Gauges
• Operating Supply Voltage: 2.5 V to 4.6 V
• Supply Current: 85 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: Yes
• Mounting Style: SMD/SMT
• Temperature Monitoring: Yes
• Uvlo Start Threshold: 2.4 V
• Uvlo Stop Threshold: 2.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

located inside the protection FETs in a low-side configuration. The thresholds for overvoltage, overcurrent, and
short-circuit current are user programmable for easy customization to each cell and application.
The 32-bit wide SHA-1 engine with 64-bit secret and 64-bit challenge words resists brute force and other attacks
with financial-level HMAC security. The challenge of managing secrets in the supply chain is addressed with the
compute next secret feature. The unique serial number or ROM ID can be used to assign a unique secret to each
battery.
BLOCK DIAGRAM
VDD
PLS
CC
DC
CP
FET DRIVERS
PROTECTOR
LITHIUM ION
CHARGE
PUMP
VDD_INT
UV, CD
Status Registers
POWER MODE
ALGORITHM
16 Byte User
FuelPack™
FuelPack™
Control and
Parameter
EEPROM
EEPROM
Algorithm
32 Byte
Control
10 of 43
DS2784
1-Wire Interface
TEMPERATURE
OSCILLATOR
PRECISION
PIO Logic
(VIN - VSSA)
(VSS - SNS)
ANALOG
CURRENT
VOLTAGE
WKP, WKD
10-Bit + sign
15-Bit + sign
ADC/MUX
Pin Drivers
and Pwr
VREF
Control
ADC
Switch
VIN
SNS
VSS
PIO
DQ