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LTC4150 - Coulomb Counter/ Battery Gas Gauge

General Description

The LTC®4150 measures battery depletion and charging in handheld PC and portable product applications.

The device monitors current through an external sense resistor between the battery’s positive terminal and the battery’s load or charger.

Key Features

  • n Indicates Charge Quantity and Polarity n ±50mV Sense Voltage Range n Precision Timer Capacitor or Crystal Not Required n 2.7V to 8.5V Operation n High Side Sense n 32.55Hz/V Charge Count Frequency n 1.5μA Shutdown Current n 10-Pin MSOP Package.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FEATURES n Indicates Charge Quantity and Polarity n ±50mV Sense Voltage Range n Precision Timer Capacitor or Crystal Not Required n 2.7V to 8.5V Operation n High Side Sense n 32.55Hz/V Charge Count Frequency n 1.5μA Shutdown Current n 10-Pin MSOP Package APPLICATIONS n Battery Chargers n Palmtop Computers and PDAs n Cellular Telephones and Wireless Modems TYPICAL APPLICATION LTC4150 Coulomb Counter/ Battery Gas Gauge DESCRIPTION The LTC®4150 measures battery depletion and charging in handheld PC and portable product applications. The device monitors current through an external sense resistor between the battery’s positive terminal and the battery’s load or charger. A voltage-to-frequency converter transforms the current sense voltage into a series of output pulses at the interrupt pin.