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PS810 数据表(PDF) 1 Page - Microchip Technology |
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PS810 数据表(HTML) 1 Page - Microchip Technology |
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1 / 46 page  © 2006 Microchip Technology Inc. DS21904C-page 1 PS810 Hardware Features • Highly accurate fuel gauge for single cell Li Ion applications • Algorithms are implemented using an embedded PIC18 low-power microcontroller with 16-bit instruction set • Reports current, voltage and temperature utilizing a programmable 8 to15-bit + sign, sigma-delta ADC • Host communication accomplished through an industry standard SMBus interface or an alternative single pin serial interface • I/O pins are available to provide functions such as digital GPIO, coin cell voltage measurement and thermistor input • Integrated temperature sensor and regulator minimize external components • Embedded fuel gauge algorithms and application specific parameters are stored in a 4K x 16 Flash memory • 512 bytes of RAM are available for temporary storage of battery parameters Software Features • Provides battery status, such as average time to empty, relative State-Of-Charge and battery State-Of-Health • In-system offset calibration compensates for offset error in current measurement Package Features • 16-pin QFN package or 14-pin TSSOP package •-20°C to +85°C operating temperature range Pin Description 1.0 PRODUCT OVERVIEW The PS810 is a fuel gauge for one-cell Li Ion or Li Poly- mer applications. The device provides the host and the system user with critical battery information, such as voltage, current, temperature, run time, State-Of-Charge and State-Of-Health. This information is available through an industry standard SMBus or an alternative Single Pin Serial interface. Advanced fuel gauge algorithms are stored in on-board Flash memory and executed by the industry recognized PIC18 micro- controller. These algorithms include compensation factors which optimize the performance of the battery for a specific application and operating environment. Compensation is included for the effects of temperature, discharge rate, charge rate and battery aging. To provide precise measurements of current, voltage and temperature, the PS810 integrates a highly accurate 15-bit + sign, sigma-delta A/D converter. Based upon operating conditions, this programmable converter can be configured to measure specific battery parameters with a resolution of 8 to 15 bits + sign. Precision measurements combined with advanced algorithms provide accurate indications of capacity, run time, State-Of-Health and safety and charge/discharge conditions. The ability to operate directly from a single Li Ion or Li Polymer cell minimizes the need for external compo- nents, such as a voltage regulator and voltage divider. To further limit external circuitry and enhance accuracy, the PS810 provides an integrated temperature sensor and oscillator. IO4 GND NTC/IO2 1 2 3 4 56 7 16 15 14 13 12 11 10 PS810 8 9 IO5 16-pin QFN (4 mm x 4 mm) VCOIN/IO3 VFILTER MCLR SR 2 NTC/IO2 SDA/SPS GND SR MCLR VC1 IO6 IO5 VCOIN/IO3 VFILTER 1 2 3 4 5 6 7 14 13 12 11 10 9 8 IO4 ROSC SCL/IO0 IO1 14-pin TSSOP Li Ion Single Cell Fuel Gauge |
类似零件编号 - PS810 |
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类似说明 - PS810 |
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