Smart Battery Monitor DS2438A For Computer / Cellular Phone - DS2438A
Smart Battery Monitor DS2438A For Computer / Cellular Phone For Sale, Most Competitive Price, Fast Delivery, Custom Service, Wholesale Smart Battery Monitor DS2438A For Computer / Cellular Phone, Made in China, High Quality Products!, China cheap prodocuts, china suppliers Supplier, Manufacturer.
DS2438
Smart Battery Monitor
FEATURES
?Unique 1-Wire? interface requires only one 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 endof-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 electronics, and handheld instrumentation PIN ASSI
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PIN DESCRIPTION
DQ - Data In/Out
VAD - General A/D input
VSENS+ - Battery current monitor input (+)
VSENS- - Battery current monitor input (-)
VDD - Power Supply (2.4V to 10.0V)
GND - Ground NC - No connect
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DESCRIPTION
? The DS2438 Smart Battery Monitor provides several 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.
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PIN? | SYMBOL? | DESCRIPTION |
1 | GND | Ground |
2 | VSENS+ | Battery Input: connection for battery current to be monitored (see text) |
3 | VSENS-? | Battery Input: connection for battery current to be monitored (see text) |
4 | VAD? | ADC Input: input for general purpose A/D |
5 | VDD? | VDD Pin: input supply voltage |
6,7 | NC? | No Connect |
8 | DQ? | Data Input/Out: for 1-Wire operation: Open drain |
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Anterwell Technology co.,Ltd
Address: B-9P Duhui 100 Building Futian District, Shenzhen,China, Shenzhen, Guangdong, China, 518000
Tel: 86-755-61352205
Anterwell is specialized in Electronic Componentswhich is located in the largest electronics center in Asian---North HuaQiang, Shenzhen City P.R. Over the several years, the company has grown and prospered. Now it has been a famous distributor in the Memory Field of the Electronic Components.
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