Product Summary

The DS2784 is a 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication. The DS2784 operates from 2.5V to 4.6V for integration in battery packs using a single lithium-ion (Li+) or Li+ polymer cell. Available capacity is reported in mAh and as a percentage. Safe operation is ensured with the included Li+ protection function and SHA-1-based challenge-response authentication. The applications of the DS2784 include: Smartphones/PDAs, Digital Still and Video Cameras, Cordless VOIP Phones, Portable GPS Navigation.

Parametrics

DS2784 absolute maximum ratings: (1)Voltage Range on PLS Pin Relative to VSS: -0.3V to +18V; (2)Voltage Range on CP Pin Relative to VSS: -0.3V to +12V; (3)Voltage Range on DC Pin Relative to VSS: -0.3V to (CP + 0.3V); (4)Voltage Range on CC Pin Relative to VSS: VDD - 0.3V to CP + 0.3V; (5)Voltage Range on All Other Pins Relative to VSS: -0.3V to +6.0V; (6)Maximum Voltage Range on VIN Pin Relative to VDD: VDD + 0.3V; (7)Continuous Sink Current, PIO, DQ: 20mA; (8)Continuous Sink Current, CC, DC: 10mA; (9)Operating Temperature Range: -40℃ to +85℃; (10)Storage Temperature Range: -55℃ to +125℃.

Features

DS2784 features: (1)Precision Voltage, Temperature, and Current Measurement System; (2)Available Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Cell Characteristics; (3)Estimates Cell Aging Using Learn Cycles; (4)Uses Low-Cost Sense Resistor; (5)Allows for Calibration of Gain and Temperature Coefficient; (6)Li+ Safety Circuitry—Overvoltage, Undervoltage, Overcurrent, Short-Circuit Protection; (7)Programmable Safety Thresholds for Overvoltage and Overcurrent; (8)Authentication Using SHA-1 Algorithm and 64-Bit Secret; (9)32-Byte Parameter EEPROM; (10)16-Byte User EEPROM.

Diagrams

DS2784 diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS2784
DS2784

Other


Data Sheet

Negotiable 
DS2784G+
DS2784G+

Maxim Integrated Products

Battery Management Stand-Alone Fuel Gauge

Data Sheet

0-1: $4.99
1-25: $3.35
25-50: $2.42
50-100: $2.40
DS2784G+T&R
DS2784G+T&R

Maxim Integrated Products

Battery Management Stand-Alone Fuel Gauge

Data Sheet

0-2085: $2.01
2085-2500: $2.01
DS2784G-CT+T&R
DS2784G-CT+T&R

Maxim Integrated Products

Battery Management

Data Sheet

Negotiable 
DS2784K
DS2784K

Maxim Integrated Products

Power Management IC Development Tools

Data Sheet

Negotiable