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4 / 30 page MCP73837/8 DS22071A-page 4 © 2007 Microchip Technology Inc. 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings† VDDN ................................................................................7.0V All Inputs and Outputs w.r.t. VSS ............... -0.3 to (VDD+0.3)V Maximum Junction Temperature, TJ ............Internally Limited Storage temperature .....................................-65°C to +150°C ESD protection on all pins Human Body Model (1.5 kW in Series with 100 pF) ......≥ 4kV Machine Model (200 pF, No Series Resistance) .............300V † Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(typical) + 0.3V] to 6V, TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (typical) + 1.0V] Parameters Sym Min Typ Max Units Conditions Supply Input Supply Voltage VDD VREG(Typ) +0.3V —6 V Note 1 Supply Current ISS — 1900 3000 µA Charging 110 300 µA Charge Complete, No Battery — 75 100 µA Standby (PROG Floating) — 0.6 5 µA Shutdown (VDD < VBAT - 100 mV or VDD < VSTOP) UVLO Start Threshold VSTART 3.35 3.45 3.55 V VDD= Low to High (USB-Port) UVLO Stop Threshold VSTOP 3.25 3.35 3.45 V VDD= High to Low (USB-Port) UVLO Hysteresis VHYS — 75 — mV (USB-Port) UVLO Start Threshold VSTART 4.1 4.15 4.3 V (AC-Adapter) UVLO Stop Threshold VSTOP 4.0 4.1 4.2 V (AC-Adapter) UVLO Hysteresis VHYS — 55 — mV (AC-Adapter) Voltage Regulation (Constant Voltage Mode) Regulated Charge Voltage VREG 4.179 4.20 4.221 V VDD=[VREG(typical)+1V] 4.328 4.35 4.372 V IOUT=30 mA 4.378 4.40 4.422 V TA=-5°C to +55°C 4.477 4.50 4.523 V Regulated Charge Voltage Tolerance VRTOL -0.5 — +0.5 % TA=-5°C to +55°C Line Regulation |(ΔVBAT/ VBAT)/ΔVDD| — 0.075 0.2 %/V VDD=[VREG(typical)+1V] to 6V IOUT=30 mA Load Regulation |ΔVBAT/VBAT| — 0.150 0.3 % IOUT=10 mA to 100 mA VDD=[VREG(typical)+1V] Supply Ripple Attenuation PSRR — 60 — dB IOUT=10 mA, 10Hz to 1 kHz —52 — dB IOUT=10 mA, 10Hz to 10 kHz —23 — dB IOUT=10 mA, 10Hz to 1 MHz Current Regulation (Fast Charge Constant-Current Mode) AC-Adapter Fast Charge Current IREG 95 105 115 mA PROG1 = 10 k Ω 900 1000 1100 mA PROG1 = 1 k Ω, Note 2 TA=-5°C to +55°C Note 1: The supply voltage (VDD) = VAC when input power source is from Ac-Adapter and the supply voltage (VDD) = VUSB when input power source is from USB-Port. 2: The value is guaranteed by design and not production tested. 3: The current is based on the ratio of selected current regulation (IREG). 4: The maximum charge impedance has to be less than shutdown impedance for normal operation. |
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