DS2761B 데이터 시트보기 (PDF) - Maxim Integrated

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DS2761B

High-Precision Li+ Battery Monitor

Maxim Integrated 

DS2761

Three types of memory are provided on the DS2761 for battery information storage: EEPROM, lockable

EEPROM, and SRAM. EEPROM memory saves important battery data in true NV memory that is

unaffected by severe battery depletion, accidental shorts, or ESD events. Lockable EEPROM becomes

ROM when locked to provide additional security for unchanging battery data. SRAM provides

inexpensive storage for temporary data.

Figure 1. BLOCK DIAGRAM

DQ

1-WIRE

INTERFACE

AND

ADDRESS

THERMAL

SENSE

VOLTAGE

REFERENCE

VIN

+

IS1

-

IS2

MUX

ADC

REGISTERS AND

USER MEMORY

LOCKABLE EEPROM

SRAM

TEMPERATURE

VOLTAGE

CURRENT

ACCUM. CURRENT

STATUS / CONTROL

TIMEBASE

PIO

PLS

LI-ION PROTECTION

CC

PS

DC

SNS

INTERNAL SENSE RESISTOR CONFIGURATION ONLY

25mW

CHIP GROUND

VSS

IS2

IS1

TEST CURRENT AND RECOVERY CHARGE DETAIL

PLS

IRC

VDD

ITST

VSS

3 of 24

ITST

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