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参数资料
| 型号： | LTC2942IDCB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 8/18页 |
| 文件大小： | 0K |
| 描述： | IC FUEL/GAS GAUGE LI-ION 6DFN |
| 标准包装： | 1 |
| 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： | 6-WFDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN-EP（2x3） |
| 包装： | 标准包装 |
| 配用： | DC1496B-B-ND - BOARD EVAL LTC2942 |
| 其它名称： | LTC2942IDCB#TRMPBFDKR |
LTC2942
OPERATION
Power-Up Sequence
When SENSE + rises above a threshold of approximately
2.5V, the LTC2942 generates an internal power-on reset
(POR) signal and sets all registers to their default state.
In the default state, the coulomb counter is active while
the voltage and temperature ADC is switched off. The
APPLICATIONS INFORMATION
I 2 C/SMBus Interface
The LTC2942 communicates with a bus master using a
2-wire interface compatible with I 2 C and SMBus. The 7-bit
hard-coded I 2 C address of the LTC2942 is 1100100 .
accumulated charge register is set to mid-scale (7FFFh),
all low threshold registers are set to 0000h and all high
threshold registers are set to FFFFh. The alert mode is
enabled and the coulomb counter prescaling factor M is
set to 128.
The sixteen internal registers are organized as shown in
Table 1.
Table 1. Register Map
ADDRESS NAME REGISTER DESCRIPTION R/W DEFAULT
The LTC2942 is a slave-only device. Therefore the serial
clock line (SCL) is an input only while the serial data line
(SDA) is bidirectional. The device supports I 2 C standard
and fast mode. For more details refer to the I 2 C Protocol
section.
Internal Registers
The LTC2942 integrates current through a sense resistor,
measures battery voltage and temperature and stores the
results in internal 16-bit registers accessible via I 2 C. High
and low limits can be programmed for each measurement
quantity. The LTC2942 continuously monitors these limits
and sets a flag in the onboard status register when a limit
is exceeded. If the alert mode is enabled, the AL /CC pin
pulls low.
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
0Ah
0Bh
0Ch
0Dh
0Eh
0Fh
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Status
Control
Accumulated Charge MSB
Accumulated Charge LSB
Charge Threshold High MSB
Charge Threshold High LSB
Charge Threshold Low MSB
Charge Threshold Low LSB
Voltage MSB
Voltage LSB
Voltage Threshold High
Voltage Threshold Low
Temperature MSB
Temperature LSB
Temperature Threshold High
Temperature Threshold Low
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R/W
R/W
R
R
R/W
R/W
See Below
3Ch
7Fh
FFh
FFh
FFh
00h
00h
XXh
XXh
FFh
00h
XXh
XXh
FFh
00h
R = Read, W = Write, XX = Unknown
2942fa
8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC2943CDD#PBF | 制造商:Linear Technology 功能描述:IC GAS GAUGE MULTICELL 8DFN 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, 20V, DFN-8, Battery Management Function:Fuel Gauge, Battery Type:-, Supply Voltage Min:3.6V, Supply Voltage Max:20V, Battery IC Case Style:DFN, No. of Pins:8, IC Interface Type:I2C, SMBus, Package / Case:8-DFN , RoHS Compliant: Yes |
| LTC2943CDD#TRPBF | 制造商:Linear Technology 功能描述:BATTERY GAS GAUGE, 20V, DFN-8, Battery Management Function:Fuel Gauge, Supply Voltage Min:3.6V, Supply Voltage Max:20V, Battery IC Case Style:DFN, No. of Pins:8, IC Interface Type:I2C, SMBus, Operating Temperature Min:0C , RoHS Compliant: Yes |
| LTC2945CMS#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Wide Range I2C Power Monitor (SDAO) |
| LTC2945CMS#TRPBF | 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP 制造商:Linear Technology 功能描述:MS-System Monitor/Other, Wide Range I2C Power Monitor (SDAO) |
| LTC2945CMS-1#PBF | 制造商:Linear Technology 功能描述:I2C Power Monitor 12-Pin MSOP 制造商:Linear Technology 功能描述:IC POWER MONITOR I2C 12-MSOP |
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