LTC2942CDCB Просмотр технического описания (PDF) - Linear Technology
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LTC2942CDCB Datasheet PDF : 16 Pages
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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
GND
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) IS GND, MUST BE SOLDERED TO PCB OR LEFT FLOATING
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
CONDITIONS
MIN
TYP
MAX UNITS
Power Requirements
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
Shutdown
l
2.5
μA
VUVLO
Undervoltage Lockout Threshold
Coulomb Counter
Shutdown, VSENSE+ ≤ 4.2V
VSENSE+ Falling
1
μA
l
2.5
2.6
2.7
V
VSENSE
Sense Voltage Differential Input VSENSE+ – VSENSE–
Range
l
±50
mV
RIDR
Differential Input Resistance,
Across SENSE+ and SENSE–
(Note 8)
400
kΩ
qLSB
Charge LSB (Note 4)
Prescaler M = 128 (Default), RSENSE = 50mΩ
TCE
Total Charge Error (Note 5)
10mV ≤ |VSENSE| ≤ 50mV DC
10mV ≤ |VSENSE| ≤ 50mV DC, VSENSE + ≤ 4.2V
l
1mV ≤ |VSENSE| < 50mV DC (Note 8)
l
0.085
mAh
±1
%
±1.5
%
±3.5
%
2942f
2
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