Details, datasheet, quote on part number: LTC2941IDCBTRMPBF
PartLTC2941IDCBTRMPBF
Category
TitleIC BATTERY MONITOR LI-ION 6DFN
Description
CompanyAnalog Devices
DatasheetDownload LTC2941IDCBTRMPBF datasheet
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LTC2941IDCBTRMPBF photo

Others parts numbering
LTC2941CDCB-1TRMPBF
LTC2941CMS8EPBF: IC BATTERY MONITOR LI-ION 8MSOP
LTC2941IDCB-1TRMPBF
LTC2941IMS8EPBF: IC BATTERY MONITOR LI-ION 8MSOP
DC1812A-B: DEMO BOARD FOR LTC2944
DC1812A-A: EVAL BOARD FOR LTC2943
DC1496B-C: BOARD EVAL FOR LTC2941-1
DC1496B-A: BOARD EVAL LTC2941
DC1496C-B: DEMO BOARD LTC2942
DC1812A-C: EVAL BOARD FOR LTC2943-1

 

Features, Applications

Indicates Accumulated Battery Charge and Discharge n High Accuracy Analog Integration n High Side Sense n 1% Charge Accuracy n ±50mV Sense Voltage Range n SMBus/I2C Interface n Configurable Alert Output/Charge Complete Input to 5.5V Operating Range n Quiescent Current Less Than 100µA n Small × 3mm DFN and 8-Lead MSOP Packages

Description

The LTC®2941 measures battery charge state in batterysupplied handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery's positive terminal and the load or charger. The measured charge is stored in internal registers. An SMBus/I2C interface accesses and configures the device. The LTC2941 features programmable high and low thresholds for accumulated charge. If a threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register. The LTC2941 requires only a single low value external sense resistor to set the current range.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and ThinSOT and Bat-Track are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

Applications
Low Power Handheld Products Cellular Phones n MP3 Player nCameras nGPS
Total Charge Error vs Differential Sense Voltage
CHARGER SENSE+ LTC2941 AL/CC SDA SENSE­ SCL GND LOAD 0.1µF RSENSE 2.0 1.5 CHARGE ERROR VSENSE (mV)

Supply Voltage (SENSE+).............................. to 6V SCL, SDA, AL/CC.......................................... to 6V SENSE­................................... ­0.3V to (VSENSE+ + 0.3V)

Operating Ambient Temperature Range to 85°C Storage Temperature Range...................... to 150°

TOP VIEW SENSE+ 1 GND 2 SCL 7 6 SENSE­ 5 AL/CC 4 SDA TOP VIEW SENSE+ GND SCL NC SENSE ­ AL/CC SDA NC

DCB PACKAGE × 3mm) PLASTIC DFN TJMAX = 120°C/W EXPOSED PAD (PIN 7), DO NOT CONNECT
MSE PACKAGE 8-LEAD PLASTIC MSOP EXPOSED PAD (PIN 9), DO NOT CONNECT
TAPE AND REEL (MINI) LTC2941CDCB#TRMPBF LTC2941IDCB#TRMPBF TUBE LTC2941CMS8E#PBF TAPE AND REEL

PART MARKING* LFKQ PART MARKING* LTGVY PACKAGE DESCRIPTION × 3mm) Plastic DFN × 3mm) Plastic DFN PACKAGE DESCRIPTION 8-Lead Plastic MSOP TEMPERATURE RANGE to 85°C TEMPERATURE RANGE to 70°C

LTC2941IMS8E#PBF LTC2941IMS8E#TRPBF LTGVY 8-Lead Plastic MSOP to 85°C TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container. Consult LTC Marketing for parts specified with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.

LTC2941 Electrical Characteristics The l denotes the specifications which apply over the full operating

PARAMETER Supply Voltage Supply Current (Note 3) Device On Shutdown Shutdown, VSENSE+ 4.2V VUVLO Undervoltage Lockout Threshold VSENSE+ Falling, DCB Package VSENSE+ Falling, MSE Package VSENSE+ ­ VSENSE­

Power Requirements Prescaler = 128 (Default), RSENSE 50m 10mV |VSENSE DC 10mV |VSENSE 50mV, DC VSENSE+ 4.2V 1mV |VSENSE 50mV DC (Note 7) VBAT Alert VBAT Alert Threshold VSENSE+ Falling, = 01 VSENSE+ Falling, = 10 VSENSE+ Falling, = 11 Digital Inputs and Digital Outputs VITH VOL IIN CIN tPCC Logic Input Threshold, AL/CC, SCL, SDA Low Level Output Voltage, AL/CC, SDA = 3mA Input Leakage, AL/CC, SCL, SDA Input Capacitance, AL/CC, SCL, SDA Minimum Charge Complete (CC) Pulse Width Maximum SCL Clock Frequency Bus Free Time Between STOP/START Minimum Repeated START Set-Up Time Minimum Hold Time (Repeated) START Condition

Coulomb Counter VSENSE Sense Voltage Differential Input Range Differential Input Resistance, Across SENSE+ and SENSE­ (Note 7) qLSB TCE Charge LSB (Note 4) Total Charge Error (Note 5)

I2C Timing Characteristics fSCL(MAX) tBUF(MIN) tSU,STA(MIN) tHD,STA(MIN) kHz µs ns
tSU,STO(MIN) Minimum Set-Up Time for STOP Condition

 

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