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参数资料
| 型号： | LTC2942CDCB-1#TRMPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229TBD, DFN-6 |
| 文件页数： | 13/16页 |
| 文件大小： | 230K |
| 代理商： | LTC2942CDCB-1#TRMPBF |
LTC2942-1
29421f
pin FuncTions
block Diagram
SENSE+ (Pin 1): Positive Current Sense Input and Power
Supply. Connect to the load and battery charger output.
VSENSE+ operating range is 2.7V to 5.5V.
GND (Pin 2): Device Ground. Connect directly to the nega-
tive battery terminal.
SCL (Pin 3): Serial Bus Clock Input.
SDA (Pin 4): Serial Bus Data Input and Output.
AL/CC (Pin 5): Alert Output or Charge Complete Input.
Configured either as an SMBus alert output or charge
completeinputbycontrolregisterbitsB[2:1].Atpower-up,
the pin defaults to alert mode conforming to the SMBus
alert response protocol. It behaves as an open-drain logic
output that pulls to GND when any threshold register value
is exceeded. When configured as a charge complete input,
a high level at CC sets the value of the accumulated charge
(registers C, D) to FFFFh. Columb counting starts when
the input returns to low level.
SENSE– (Pin 6): Negative Current Sense Input. Connect
SENSE– to the positive battery terminal. Current from/into
this pin must not exceed 1A in normal operation.
Exposed Pad (Pin 7): Do Not Connect. Soldering the
exposed pad to adequate electrically isolated copper area
is recommended for best thermal performance, and best
accuracy of the integrated temperature sensor.
REF+
REF–
REF
CLK
COULOMB COUNTER
ADC
IN
CLK
MUX
SENSE–
REFERENCE
GENERATOR
TEMPERATURE
SENSOR
ACCUMULATED
CHARGE
REGISTER
DATA AND
CONTROL
REGISTERS
OSCILLATOR
6
SENSE+
1
AL/CC
AL
5
GND
RSENSE
50m
2
I2C/
SMBus
SCL
CC
SDA
29421 BD
3
4
VSUPPLY
RBOND
12m
RBOND
12m
operaTion
Overview
The LTC2942-1 is a battery gas gauge device designed
for use with single Li-Ion cells and other battery types
with terminal voltages from 2.7V to 5.5V. It measures
battery charge and discharge, battery voltage and chip
temperature. A precision coulomb counter integrates
current through an internal sense resistor between the
battery’s positive terminal and the load or charger. Battery
voltage and on-chip temperature are measured with an
internal 14-bit/10-bit ADC. The integrated, temperature-
compensated sense resistor offers board space savings
andsuperiorchargemeasurementaccuracyinapplications
with currents up to 1A.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2942IDCB#PBF | 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE LI-ION 5.5V DFN-6 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, LI-ION, 5.5V, DFN-6 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, LI-ION, 5.5V, DFN-6, Battery Management Function:Fuel Gauge, Status Monitor, Battery Type:Li-Ion, Supply Voltage Min:2.7V, Supply Voltage Max:5.5V, Battery IC Case Style:DFN, No. of Pins:6, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Cut Tape Battery Gas Gauge with Temperature & Voltage M |
| LTC2942IDCB#TRMPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 其它有关文件:STC3100 View All Specifications 特色产品:STC3100 - Battery Monitor IC 标准包装:4,000 系列:- 功能:燃料，电量检测计/监控器 电池化学:锂离子（Li-Ion） 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-MiniSO 包装:带卷 (TR) 其它名称:497-10526-2 |
| LTC2942IDCB#TRPBF | 功能描述:IC FUEL/GAS GAUGE LI-ION 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:61 系列:- 功能:电源管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:4.35 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:22-WFDFN 裸露焊盘 供应商设备封装:22-DFN（6x3）裸露焊盘 包装:管件 |
| LTC2942IDCB-1#PBF | 制造商:Linear Technology 功能描述:BATTERY FUEL GAUGE LI-ION 5.5V DFN-6 制造商:Linear Technology 功能描述:IC, BATTERY FUEL GAUGE, LI-ION, 5.5V, DFN-6, Battery Management Function:Fuel Gauge, Charge Controller, Battery Type:Li-Ion, Supply Voltage Min:2.7V, Supply Voltage Max:5.5V, Battery IC Case Style:DFN, No. of Pins:6 , RoHS Compliant: Yes |
| LTC2942IDCB-1#PBF | 制造商:Linear Technology 功能描述:IC BATTERY FUEL GAUGE LI-ION 5.5V DFN-6 |
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