LTC2942CDCB 데이터 시트보기 (PDF) - Linear Technology

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LTC2942CDCB

Battery Gas Gauge with Temperature, Voltage Measurement

Linear Technology 

LTC2942

TYPICAL APPLICATION

Single Cell Lithium-Ion Coulomb Counter with Battery Charger for Charge and Discharge Currents of up to 500mA

500mA

VIN

5V

4 VCC

BAT 3

3.3V

LOAD

0.1μF

1μF LTC4057-4.2

(CHARGER)

5 PROG SHDN 1

VDD

2k

GND

μP

2

2k 2k 2k

SENSE+ 1

5

LTC2942

AL/CC

RSENSE

100mΩ

4 SDA

3 SCL

SENSE– 6 +

1-CELL

GND

Li-Ion

2

2942 TA02

RELATED PARTS

PART NUMBER DESCRIPTION

Battery Gas Gauges

LTC2942-1

Battery Gas Gauge with I2C Interface and Voltage and

Temperature ADC; Integrated Sense Resistor

LTC2941

Battery Gas Gauge with I2C Interface

LTC2941-1

Battery Gas Gauge with I2C Interface and Integrated

50mΩ Sense Resistor

LTC4150

Coulomb Counter/Battery Gas Gauge

Battery Chargers

LTC1734

Lithium-Ion Battery Charger in ThinSOT™

LTC4002

Switch Mode Lithium-Ion Battery Charger

LTC4052

Monolithic Lithium-Ion Battery Pulse Charger

LTC4053

USB Compatible Monolithic Li-Ion Battery Charger

LTC4057

Lithium-Ion Linear Battery Charger

LTC4058

Standalone 950mA Lithium-Ion Charger in DFN

LTC4059

900mA Linear Lithium-Ion Battery Charger

LTC4061

LTC4063

LTC4088

Standalone Linear Li-Ion Battery Charger with

Thermistor Input

Li-Ion Charger with Linear Regulator

High Efficiency Battery Charger/USB Power Manager

ThinSOT and Bat-Track are trademarks of Linear Technology Corporation.

COMMENTS

2.7V to 5.5V Operation, 14-Bit Δ∑-ADC, Pin Compatible with LTC2941-1

2.7V to 5.5V Operation, Pin Compatible with LTC2942

2.7V to 5.5V Operation, Pin Compatible with LTC2942-1

2.7V to 8.5V Operation, 10-Pin MSOP Package

Simple ThinSOT Charger, No Blocking Diode, No Sense Resistor Needed

Standalone, 4.7V ≤ VIN ≤ 24V, 500kHz Frequency

No Blocking Diode or External Power FET Required, ≤1.5A Charge Current

Standalone Charger with Programmable Timer, Up to 1.25A Charge Current

Up to 800mA Charge Current, Thermal Regulation, ThinSOT Package

C/10 Charge Termination, Battery Kelvin Sensing, ±7% Charge Accuracy

2mm × 2mm DFN Package, Thermal Regulation, Charge Current Monitor

Output

4.2V, ±0.35% Float Voltage, Up to 1A Charge Current, 3mm × 3mm DFN

Package

Up to 1A Charge Current, 100mA, 125mV LDO, 3mm × 3mm DFN Package

Maximizes Available Power from USB Port, Bat-Track™, Instant-On Operation,

1.5A Max Charge Current, 180mΩ Ideal Diode with <50mΩ Option,

3.3V/25mA Always-On LDO, 4mm × 3mm DFN-14 Package

16 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

2942f

LT 0210 • PRINTED IN USA

© LINEAR TECHNOLOGY CORPORATION 2010

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