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| 型号： | DC1496A-A |
| 厂商： | Linear Technology |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL LTC2941 |
| 软件下载： | QuikEval System |
| 设计资源： | DC1496A Design Files DC1496A Schematic |
| 标准包装： | 1 |
| 系列： | QuikEval™ |
| 主要目的： | 电源管理，电池监控器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | LTC2941 |
| 主要属性： | I²C、SMBus 接口 |
| 次要属性： | LED 状态指示器 |
| 已供物品： | 板，线缆 |
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LTC2941
APPLICATIONS INFORMATION
I 2 C/SMBus Interface
The LTC2941 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 LTC2941 is 1100100 .
The LTC2941 is a slave-only device. Therefore the serial
clock line (SCL) is input only while the data line (SDA) is
bidirectional. For more details refer to the I 2 C Protocol
section.
Status Register (A)
Table 2 shows the details of the status register (address
00h):
Table 2. Status Register A (Read Only)
BIT NAME OPERATION DEFAULT
A[7] Chip Identification 1: LTC2941 1
0: LTC2942
A[6] Reserved Not Used. 0
Internal Registers
The LTC2941 integrates current through a sense resistor
and stores a 16-bit result, accumulated charge, as two
bytes in registers C and D. Two byte high and low limits
programmed in registers E, F, G and H are continuously
compared against the accumulated charge. If either limit is
exceeded, a corresponding flag is set in the status register
bits A[2] or A[3]. If the alert mode is enabled, the AL /CC
pin pulls low.
The internal eight registers are organized as shown in
Table 1:
Table 1. Register Map
ADDRESS NAME REGISTER DESCRIPTION R/W DEFAULT
A[5] Accumulated Charge
Overflow/Underflow
A[4] Reserved
A[3] Charge Alert High
A[2] Charge Alert Low
A[1] V BAT Alert
A[0] Undervoltage
Lockout Alert
Indicates that the value of the
accumulated charge hit either
top or bottom.
Not used.
Indicates that the accumulated
charge value exceeded the
charge threshold high limit.
Indicates that the accumulated
charge value dropped below
the charge threshold low limit.
Indicates that the battery
voltage (at SENSE – ) dropped
below selected V BAT threshold.
Indicates recovery from
undervoltage. If equal to 1,
a UVLO has occurred and
the content of registers is
uncertain.
0
0
0
0
0
X
00h
01h
02h
03h
04h
A
B
C
D
E
Status
Control
Accumulated Charge MSB
Accumulated Charge LSB
Charge Threshold High MSB
R
R/W
R/W
R/W
R/W
See Below
3Ch
7Fh
FFh
FFh
The AL /CC pin can be configured to pull low whenever any
status register bit is set (except for bit A[7] and A[0]), us-
ing control register bits B[2] and B[1]. All status register
bits except A[7] are cleared after being read by the host
if the conditions which set these bits have been removed.
05h F
06h G
07h H
R = Read, W = Write
Charge Threshold High LSB
Charge Threshold Low MSB
Charge Threshold Low LSB
R/W
R/W
R/W
FFh
00h
00h
As soon as one of the measured quantities exceeds the
programmed limits, the corresponding bit A[3], A[2] or
A[1] in the status register is set.
2941fa
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DC1496A-B | 功能描述:BOARD EVAL LTC2942 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:QuikEval™ 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| DC1496B-A | 制造商:Linear Technology 功能描述:BOARD EVAL LTC2941 制造商:Linear Technology 功能描述:LTC2941 BATTERY GAS GAUGE EV 制造商:Linear Technology 功能描述:DEMO BOARD, LTC2941IDCB BATTERY GAS GAUGE; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2941; Kit Application Type:Power Management; Application Sub Type:Fuel Gauge; Kit Contents:Demo Board LTC2941 |
| DC1496B-B | 功能描述:BOARD EVAL LTC2942 RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:QuikEval™ 标准包装:1 系列:- 主要目的:数字电位器 嵌入式:- 已用 IC / 零件:AD5258 主要属性:- 次要属性:- 已供物品:板 相关产品:AD5258BRMZ1-ND - IC POT DGTL I2C1K 64P 10MSOPAD5258BRMZ10-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ100-ND - IC POT DGTL I2C 100K 64P 10MSOPAD5258BRMZ50-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ1-R7-ND - IC POT DGTL I2C 1K 64P 10MSOPAD5258BRMZ10-R7-ND - IC POT DGTL I2C 10K 64P 10MSOPAD5258BRMZ50-R7-ND - IC POT DGTL I2C 50K 64P 10MSOPAD5258BRMZ100-R7-ND - IC POT DGTL I2C 100K 64P 10MSOP |
| DC1496B-B | 制造商:Linear Technology 功能描述:EVAL BOARD, LTC2942 BATTERY FUEL GAUGE |
| DC1496B-C | 制造商:Linear Technology 功能描述:BOARD EVAL FOR LTC2941-1 制造商:Linear Technology 功能描述:LTC2941-1 BATTERY GAS GAUGE 制造商:Linear Technology 功能描述:DEMO BOARD, LTC2941IDCB-1 BATTERY GAS GAUGE; Silicon Manufacturer:Linear Technology; Silicon Core Number:LTC2941; Kit Application Type:Power Management; Application Sub Type:Fuel Gauge; Kit Contents:Demo Board LTC2941 |
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