LTC2942I(RevA) Просмотр технического описания (PDF) - Linear Technology

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LTC2942I
(Rev.:RevA)

Battery Gas Gauge with Temperature, Voltage Measurement

Linear Technology 

LTC2942

Absolute Maximum Ratings

(Notes 1, 2)

Supply Voltage (SENSE+).............................. –0.3V to 6V

SCL, SDA, AL/CC.......................................... –0.3V to 6V

SENSE–................................... –0.3V to (VSENSE+ + 0.3V)

Operating Ambient Temperature Range

LTC2942C................................................. 0°C to 70°C

LTC2942I.............................................. –40°C to 85°C

Storage Temperature Range.................... –65°C to 150°C

Pin Configuration

SENSE+ 1

GND 2

SCL 3

TOP VIEW

7

6 SENSE–

5 AL/CC

4 SDA

DCB PACKAGE

6-LEAD (2mm × 3mm) PLASTIC DFN

TJMAX = 150°C, θJA = 120°C/W

EXPOSED PAD (PIN 7), DO NOT CONNECT

Order Information

Lead Free Finish

TAPE AND REEL (MINI) TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

LTC2942CDCB#TRMPBF LTC2942CDCB#TRPBF LDVN

6-Lead (2mm × 3mm) Plastic DFN

LTC2942IDCB#TRMPBF LTC2942IDCB#TRPBF LDVN

6-Lead (2mm × 3mm) Plastic DFN

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.

Consult LTC Marketing for information on lead based finish parts.

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/

TEMPERATURE RANGE

0°C to 70°C

–40°C to 85°C

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

temperature range, otherwise specifications are at TA = 25°C. (Note 2)

SYMBOL PARAMETER

Power Requirements

CONDITIONS

MIN

TYP

MAX UNITS

VSENSE+

ISUPPLY

Supply Voltage

Supply Current (Note 3)

2.7

5.5

V

Battery Gas Gauge On, ADC Sleep

l

70

100

µA

Battery Gas Gauge On, ADC Converting Voltage

l

300

350

µA

Battery Gas Gauge On, ADC Converting Temperature l

350

420

µA

VUVLO

Undervoltage Lockout Threshold

Coulomb Counter

Shutdown

Shutdown, VSENSE+ ≤ 4.2V

VSENSE+ Falling

l

2.5

µA

1

µA

l

2.5

2.6

2.7

V

VSENSE

RIDR

Sense Voltage Differential Input

Range

Differential Input Resistance,

Across SENSE+ and SENSE–

(Note 8)

VSENSE+ – VSENSE–

l

±50

mV

400

kΩ

2942fa

2

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