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MCP73855T Datasheet(PDF) 2 Page - Microchip Technology |
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MCP73855T Datasheet(HTML) 2 Page - Microchip Technology |
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2 / 24 page  MCP73853/55 DS21915A-page 2 2004 Microchip Technology Inc. Typical Application Functional Block Diagram EN STAT1 VSET VDD1 VSS TIMER PROG VBAT1 VBAT2 + – Single Lithium-Ion Cell 3 2 MCP73855 5 6 4, 7 9 8 10 1 5V 4.7 µF 400 mA Lithium-Ion Battery Charger 4.7 µF 0.1 µF + – Charge Termination Comparator Voltage Control Amplifier + – UVLO COMPARATOR VUVLO + - Temperature Comparators + - Bias and Reference Generator VUVLO VREF(1.2V) Power-On Delay VREF VREF Oscillator IREG/12 Constant-voltage/ Recharge Comp. Precondition Control Charge_OK Precon VDD Charge Current Control Amplifier + – VREF VREF Precondition Comp. Charge Control, Charge Timers, and Status Logic Drv Stat 2 Drv Stat 1 Charge_OK IREG/12 VDD1 THERM EN TIMER STAT1 STAT2 VBAT3 VSS1 PROG VSET THREF VBAT1 90 110 k Ω 10 k Ω 10 k Ω 100 k Ω 50 k Ω 50 k Ω G = 0.001 11 k Ω 3k Ω 600 k Ω 149 k Ω 1.58 k Ω VDD2 VBAT2 300 k Ω 10.3 k Ω 4k Ω Direction Control k Ω VSS2 VSS3 MCP73853 ONLY MCP73853 ONLY |
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