- 您现在的位置：买卖IC网 > PDF目录17135 > DS2438Z (Maxim Integrated Products)IC MONITOR SMART BATTERY 8-SOIC PDF资料下载
参数资料
| 型号： | DS2438Z |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/29页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR SMART BATTERY 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 功能： | 燃料，电量检测计/监控器 |
| 电池化学： | 智能电池 |
| 电源电压： | 2.4 V ~ 10 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页
DS2438
Two other time-related functions are available. The first is the Disconnect Timestamp, which is written to
by the DS2438 whenever it senses that the DQ line has been low for approximately 2 seconds. This
condition would signal that the battery pack has been removed from the system; the time when that
occurs is written into the Disconnect Timestamp register, so that upon replacement into the system, the
system can determine how long the device has been in storage, to facilitate self-discharge corrections to
the remaining battery capacity. After the disconnect has been detected, the DS2438 reverts to a sleep
mode, during which nothing is active except the real time clock. Some applications may prefer that the
data converters and current accumulators continue operation following a pack disconnect. Thus, a
version of the DS2438 (part number DS2438A) is offered for those applications. Other than not reverting
to a low-power sleep mode following disconnect, there are no specification differences between the
DS2438 and the DS2438A.
The other timestamp is the End-of-Charge timestamp, which is written to by the DS2438 whenever it
senses that charging is finished (when current changes direction). This timestamp allows the user to
calculate the amount of time the battery has been in a discharge or storage state, again to facilitate self-
discharge calculations.
The format of the ETM, Disconnect, and End-of-Charge registers are as shown in Table 10. Refer to the
“Memory Map” section for the address location of the time-related registers.
TIME REGISTER FORMAT Table 10
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
LSB
MSb
(unit = 1s)
LSb
2 15
2 14
2 13
2 12
2 11
2 10
2 9
2 8
MSb
(unit = 1s)
LSb
2 23
2 22
2 21
2 20
2 19
2 18
2 17
2 16
MSb
(unit = 1s)
LSb
2 31
2 30
2 29
2 28
2 27
2 26
2 25
2 24
MSB
64-BIT LASERED ROM
Each DS2438 contains a unique ROM code that is 64 bits long. The first 8 bits are a 1-Wire family code
(DS2438 code is 26h). The next 48 bits are a unique serial number. The last 8 bits are a CRC of the first
56 bits. (See Figure 3.) The 64-bit ROM and ROM Function Control section allow the DS2438 to operate
as a 1-Wire device and follow the 1-Wire protocol detailed in the section “1-Wire Bus System.” The
functions required to control sections of the DS2438 are not accessible until the ROM function protocol
has been satisfied. This protocol is described in the ROM function protocol flow chart (Figure 5). The
1-Wire bus master must first provide one of four ROM function commands: 1) Read ROM, 2) Match
ROM, 3) Search ROM, or 4) Skip ROM. After a ROM function sequence has been successfully executed,
the functions specific to the DS2438 are accessible and the bus master may then provide any one of the
six memory and control function commands.
10 of 29
相关PDF资料 |
PDF描述 |
|---|---|
| VI-JW4-EZ | CONVERTER MOD DC/DC 48V 25W |
| EEC13DRTS-S734 | CONN EDGECARD 26POS DIP .100 SLD |
| SI85XX-EVB | BOARD EVAL CURRENT SENSOR 10A |
| GBC25DRYN-S13 | CONN EDGECARD 50POS .100 EXTEND |
| NC-508095-5-9 | LABEL ID PRODUCT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2438Z/T&R | 制造商:Maxim Integrated Products 功能描述:SMART BATTERY MONITOR 8-SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MONITOR SMART BATTERY 8-SOIC |
| DS2438Z/T&R | 功能描述:IC MONITOR SMART BATTERY 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| DS2438Z+ | 功能描述:电池管理 Smart Battery Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| DS2438Z+T&R | 制造商:Maxim Integrated Products 功能描述:MONITOR MULTI-CHEM 8SOIC N - Tape and Reel 制造商:Maxim Integrated Products 功能描述:BATT MONITOR 8-SOIC T&R PBFREE 制造商:Maxim Integrated Products 功能描述:IC MONITOR SMART BATTERY 8-SOIC 制造商:Maxim Integrated Products 功能描述:Battery Management Smart Battery Monitor |
| DS2438Z+T&R | 功能描述:电池管理 Smart Battery Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。