DS2784G+ datasheet(10/43 Pages) MAXIM

Part #	DS2784G+

Description	1-Cell Stand-Alone Fuel Gauge IC with Li Protector and SHA-1

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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DS2784: 1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication

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

FuelPack™

Algorithm

POWER MODE

Control

PRECISION

ANALOG

OSCILLATOR

16 Byte User

EEPROM

1-Wire Interface

CHARGE

PUMP

VDD

VDD_INT

CP

CURRENT

(VSS - SNS)

TEMPERATURE

VOLTAGE

(VIN - VSSA)

VIN

VREF

DS2784

10-Bit + sign

ADC/MUX

SNS

VSS

PIO

DQ

WKP, WKD

LITHIUM ION

PROTECTOR

PLS

FET DRIVERS

CC

DC

UV, CD

32 Byte

Parameter

EEPROM

Pin Drivers

and Pwr

Switch

Control

PIO Logic

15-Bit + sign

ADC

Control and

Status Registers

FuelPack™

ALGORITHM

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Similar Description - DS2784G+

Manufacturer	Part #	Datasheet	Description
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DS2784G+ Datasheet(PDF) 10 Page - Maxim Integrated Products

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