(Hong Kong)
Product Summary
The DS2438Z+T&R is a Smart Battery Monitor. It provides several functions that are desirable to carry in a battery pack. Information is sent to/from the DS2438Z+T&R over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS2438Z+T&R. This means that battery packs need only have three output connectors: battery power, ground, and the 1-Wire interface. Applications include portable computers, portable/cellular phones, consumer electronics, and handheld instrumentation.
Parametrics
DS2438Z+T&R absolute maximum ratings: (1)Voltage on VDD and VAD, Relative to Ground: -0.3V to + 12V; (2)Voltage on VSENS+, VSENS-, Relative to Ground: <±300 mV; (3)Voltage on Any Pin Relative to Ground: -0.3V to + 7.0V; (4)Operating Temperature: -40℃ to +85℃; (5)Storage Temperature: -55℃ to +125℃.
Features
DS2438Z+T&R features: (1)Unique 1-Wire interface requires only one port pin for communication; (2)Provides unique 64-bit serial number to battery packs; (3)Eliminates thermistors by sensing battery temperature on-chip; (4)On-board A/D converter allows monitoring of battery voltage for end-of-charge and end-of-discharge determination; (5)On-board integrated current accumulator facilitates fuel gauging; (6)Elapsed time meter in binary format; (7)40-byte nonvolatile user memory available for storage of battery-specific data; (8)Operating range -40℃ to +85℃.
Diagrams
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 DS2438Z+T&R |
Maxim Integrated Products |
Battery Management Smart Battery Monitor |
Data Sheet |
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