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参数资料
| 型号： | DS2438Z+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/29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： | 2,500 |
| 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： | 带卷 (TR) |
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AVAILAB
LE
DS2438
Smart Battery Monitor
§
Unique 1-Wire
interface requires only one
FEATURES
?
port pin for communication
§ Provides unique 64-bit serial number
§ Eliminates thermistors by sensing battery
temperature on-chip
§ On-board A/D converter allows monitoring
of battery voltage for end-of-charge and end-
PIN ASSIGNMENT
GND 1 8
V SENS+ 2 7
V SENS- 3 6
V AD 4 5
DQ
NC
NC
V DD
§
§
§
§
§
§
of-discharge determination
On-board integrated current accumulator
facilitates fuel gauging
Elapsed time meter in binary format
40-byte nonvolatile user memory available
for storage of battery-specific data
Reverts to low-power sleep mode on battery
pack disconnect (feature disabled on
DS2438AZ)
Operating range -40oC to +85oC
Applications include portable computers,
portable/cellular phones, consumer
DS2438Z, DS2438AZ
8-Pin SOIC (150-mil)
PIN DESCRIPTION
DQ - Data In/Out
VAD - General A/D input
V SENS+ - Battery current monitor input (+)
V SENS- - Battery current monitor input (-)
VDD - Power Supply (2.4V to 10.0V)
GND - Ground
NC - No connect
conjunction Diagrams continued at end of data sheet. host system, the DS2438 provides a complete smart battery
with a microcontroller in the
electronics, and handheld instrumentation
DESCRIPTION
Battery Monitor provides several
The DS2438 Smart Functional Diagrams functions that are desirable to carry in a battery
pack: a means of tagging a battery pack with a unique serial number, a direct-to-digital temperature
sensor which eliminates the need for thermistors in the battery pack, an A/D converter which measures
the battery voltage and current, an integrated current accumulator which keeps a running total of all
current going into and out of the battery, an elapsed time meter, and 40 bytes of nonvolatile EEPROM
memory for storage of important parameters such as battery chemistry, battery capacity, charging
methodology and assembly date. Information is sent to/from the DS2438 over a 1-Wire interface, so that
only one wire (and ground) needs to be connected from a central microprocessor to a DS2438. This
means that battery packs need only have three output connectors: battery power, ground, and the 1-Wire
interface.
Because each DS2438 contains a unique silicon serial number, multiple DS2438s can exist on the same
1-Wire bus. This allows multiple battery packs to be charged or used in the system simultaneously.
Applications for the smart battery monitor include portable computers, cellular telephones, and handheld
instrumentation battery packs in which it is critical to monitor real-time battery performance. Used in
Pin Configurations appear at end of data sheet.
Functional
UCSP a that of fully Integrated Products, Inc.
pack solution trademark is Maxim chemistry-independent. The customization for a particular battery chemistry
and capacity is realized in the code programmed into the microcontroller and DS2438 EEPROM, and
only a software revision is necessary should a designer wish to change battery pack chemistry.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
070605
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相关代理商/技术参数 |
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| DS244 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Octal Buffer/Line Driver with 3-State Outputs |
| DS2441 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1-Cell Li-Ion Battery Manager |
| DS2442 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Battery Management |
| DS245 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Octal Bus Transceiver |
| DS2450 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1-Wire Quad A/D Converter |
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