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MCP73871-2CCI/ML Scheda tecnica(PDF) 6 Page - Microchip Technology |
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MCP73871-2CCI/ML Scheda tecnica(HTML) 6 Page - Microchip Technology |
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6 / 40 page  MCP73871 DS20002090C-page 6 2008-2013 Microchip Technology Inc. Current Regulation (Fast Charge Constant Current Mode) AC-Adapter Fast Charge Current IREG 90 100 110 mA PROG1 = 10 k TA = -5°C to +55°C, SEL = Hi 900 1000 1100 mA PROG1 = 1 k TA = -5°C to +55°C, SEL = Hi USB Fast Charge Current IREG 80 90 100 mA PROG2 = Low, SEL = Low, (Note 2) TA = -5°C to +55°C 400 450 500 mA PROG2 = High, SEL = Low, (Note 2) TA = -5°C to +55°C Input Current Limit Control (ICLC) USB-Port Supply Current Limit ILIMIT_USB 80 90 100 mA PROG2 = Low, SEL = Low TA = -5°C to +55°C 400 450 500 mA PROG2 = High, SEL = Low TA = -5°C to +55°C AC-DC Adapter Current Limit ILIMIT_AC 1500 1650 1800 mA SEL = High, TA = -5°C to +55°C Voltage Proportional Charge Control (VPCC - Input Voltage Regulation) VPCC Input Threshold VVPCC — 1.23 — V IOUT = 10 mA TA = -5°C to +55°C VPCC Input Threshold Tolerance VRTOL -3 — +3 % Input Leakage Current ILK — 0.01 1 μAVVPCC = VDD Precondition Current Regulation (Trickle Charge Constant Current Mode) Precondition Current Ratio IPREG/IREG 7.5 10 12.5 % PROG1 = 1.0 k to 10 k TA = -5°C to +55°C Precondition Current Threshold Ratio VPTH/VREG 69 72 75 % VBAT Low-to-High Precondition Hysteresis VPHYS — 105 — mV VBAT High-to-Low Automatic Charge Termination Set Point Charge Termination Current Ratio ITERM 75 100 125 mA PROG3 = 10 k TA = -5°C to +55°C 7.5 10 12.5 mA PROG3 = 100 k TA = -5°C to +55°C Automatic Recharge Recharge Voltage Threshold Ratio VRTH VREG – 0.21V VREG – 0.15V VREG – 0.09V V VBAT High-to-Low IN-to-OUT Pass Transistor ON-Resistance ON-Resistance RDS_ON — 200 — m VDD = 4.5V, TJ = 105°C DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise indicated, all limits apply for VIN = VREG + 0.3V to 6V, TA = -40°C to +85°C. Typical values are at +25°C, VIN = [VREG (typical) + 1.0V] Parameters Sym Min Typ Max Units Conditions Note 1: The value is ensured by design and not production tested. 2: The maximum available charge current is also limited by the value set at PROG1 input. |
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