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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LP3913 датащи(PDF) 36 Page - Texas Instruments |
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LP3913 датащи(HTML) 36 Page - Texas Instruments |
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36 / 70 page  External or USB Power Charger State Machine and registers Vbatt + - + - Vfull Vrestart + - + - + Current Control Vref Batt Iref Iprog + + - - Ts Vref CV CC + + CV: Constant Voltage regulation CC: Constant Current regulation Thermal regulation Li - Ion Cell Ref 0.27V Ref 2.87V Batt_temp I2C ack from slave ack from slave ack from slave w ack start msb Chip Address lsb msb Register Add lsb msb DATA lsb ack ack stop msb Register Add lsb ack msb DATA lsb ack ack from slave ack from slave Register 0x2A Register 0x24 LP3913 SNVS489I – NOVEMBER 2006 – REVISED SEPTEMBER 2013 www.ti.com Li-Ion Linear Charger Charger Architecture The LP3913 can safely charge and maintain a single cell Li-Ion/Polymer battery operating off a regulated 6V Car adapter, AC wall adapter, or USB power (VBUS). Input power source selection of USB/adapter is seamless. If present, the charger will use the adapter power regardless of the presence of USB power. The connection of either power source is detected by LP3913. The charger module is a linear charger with constant current pre-qualification, constant current (“CC”) full-rate charging and constant voltage (“CV”) charging. CC and CV regulation is performed using an internal Power FET Q2 with reverse current blocking. The termination voltage is controlled to within ±0.35% at room temperature. The power FET Q1 acts as a switch with programmable current limit for USB operation. 36 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LP3913 |
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