參數(shù)資料
型號(hào)： DS2437
英文描述： Smart Battery Monitor
中文描述： 智能電池監(jiān)視器
文件頁(yè)數(shù)： 6/31頁(yè)
文件大?。?/td> 1215K
代理商： DS2437
DS2437
6 of 31
The current is measured by the ADC with a signed 10-bit (0.004883C) resolution, and the last completed
measurement is placed in the CURRENT REGISTER in a sign-extended 2’s-complement format. This
register is scaled such that a count of 205
10
corresponds to a current level of 1C. Thus, the range of
current flow that can be measured is from -2.5C (discharging) to +2.5C (charging). The sign (S) of the
current measurement, indicating charge or discharge, resides in the seven most significant bits of the
CURRENT REGISTER, as shown in Table 3. See “Memory Map” section for the CURRENT
REGISTER address location.
Current/Data Relationships
Table 3
BATTERY
CURRENT
+2.495C
+2.002C
+1.25C
+1.001C
0C
-1.001C
-1.25C
-2.002C
-2.500C
DIGITAL OUTPUT (Binary)
0000 0001 1111 1111
0000 0001 1001 1010
0000 0001 0000 0000
0000 0000 1100 1101
0000 0000 0000 0000
1111 1111 0011 0011
1111 1111 0000 0000
1111 1110 0110 0110
1111 1110 0000 0000
DIGITAL OUTPUT (Hex)
01FFh
019Ah
0100h
00CDh
0000h
FF33h
FF00h
FE66h
FE00h
For the DS2437 to output current data scaled as in Table 3, the user is responsible for selecting an R
SENS
that will provide a 100 mV drop across it at a 2C rate. However, this value could be changed to
correspond to a different rate as long as this is comprehended by the user’s software in interpreting the
results from the DS2437.
OPERATION – CURRENT ACCUMULATORS
The DS2437 keeps track of the remaining capacity of a battery through the Integrated Current
Accumulator (ICA). The ICA maintains a net accumulated total of current flowing into and out of the
battery; therefore, the reading in this register is an indication of the remaining capacity in a battery and
may be used in performing gas gauge functions. In addition, the DS2437 has a register that accumulates
battery charging (positive) current (CCA) and one that accumulates discharging (negative) current
(DCA). This gives the smart battery system information needed to determine the end of life of a
rechargeable battery, based on total charge/discharge current over its lifetime.
The current measurement described above yields a result of the instantaneous current measured at the
31.25 ms measurement times. This value is then used to increment or decrement the ICA register,
increment the CCA (if current is positive), or increment the DCA (if current is negative).
相關(guān)PDF資料
PDF描述
DS2438 Smart Battery Monitor
DS2438Z Smart Battery Monitor
DS2442 Battery Management
DS2501 1A VERY LOW DROPOUT VOLTAGE REGULATORS
DS2502 1 kbit Add-Only Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2437K 制造商:Maxim Integrated Products 功能描述:EVALUATION KIT BATTERY MONITO
DS2437S 功能描述:IC MONITOR SMART BATTERY 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT
DS2437S/T&R 制造商:Maxim Integrated Products 功能描述:SMART BATTERY MONITOR 16SSOP T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MONITOR SMART BATTERY 16-SSOP
DS2437S/T&R/ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS2437S/T&R 功能描述:IC MONITOR SMART BATTERY 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:充電管理 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應(yīng)商設(shè)備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT
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