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MAX807NEUE Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX807NEUE Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 16 page Full-Featured µP Supervisory Circuit with ±1.5% Reset Accuracy 4 _______________________________________________________________________________________ Note 1: Either VCC or VBATT can go to 0 if the other is greater than 2.0V. Note 2: The supply current drawn by the MAX807 from the battery (excluding IOUT) typically goes to 15µA when (VBATT - 0.1V) < VCC < VBATT. In most applications, this is a brief period as VCC falls through this region (see Typical Operating Characteristics). Note 3: “+”= battery discharging current, “-”= battery charging current. Note 4: WDI is internally connected to a voltage-divider between VCC and GND. If unconnected, WDI is driven to 1.8V (typical), disabling the watchdog function. Note 5: Overdrive (VOD) is measured from center of hysteresis band. Note 6: The chip-enable resistance is tested with VCE IN = VCC/2, and ICE IN = 1mA. Note 7: The chip-enable propagation delay is measured from the 50% point at CE IN to the 50% point at CE OUT. ELECTRICAL CHARACTERISTICS (continued) (VCC = 4.60V to 5.5V for the MAX807L, VCC = 4.50V to 5.5V for the MAX807N, VCC = 4.35V to 5.5V for the MAX807M, VBATT = 2.8V, VPFI = 0V, TA = TMIN to TMAX. Typical values are tested with VCC = 5V and TA = +25°C, unless otherwise noted.) CONDITIONS UNITS MIN TYP MAX SYMBOL PARAMETER PFI Leakage Current ±0.005 ±40 nA mV 20 PFI Hysteresis µA ±0.00002 ±1 CE IN Leakage Current Disabled mode, MR = 0V µs 14 PFI to PFO Delay (Note 5) PFI Input Threshold VPFT VPFI falling 2.22 2.285 2.35 V 2.20 2.265 2.33 RESET to CE OUT Delay VCC falling 28 µs Ω 75 150 CE IN to CE OUT Resistance (Note 6) Enabled mode, VCC = VRST (max) MR Minimum Pulse Input 1 µs ns 170 MR-to-RESET Propagation Delay mA 17 CE OUT Short-Circuit Current (RESET Active) VCC = 5V, disabled mode, CE OUT = 0, MR = 0V ns 28 CE IN to CE OUT Propagation Delay (Note 7) VCC = 5V, CLOAD = 50pF, 50 Ω source impedance driver V 3.5 CE OUT Output Voltage High (RESET Active) Disabled mode, MR = 0V MR Threshold VIH 2.4 V BATT OK Threshold VBOK 2.200 2.265 2.350 V BATT OK Hysteresis 20 mV Output Voltage (PFO, BATT OK) VOL ISINK = 3.2mA 0.4 V Output Short-Circuit Current ISC Output sink current 35 mA VPFI rising VBATT - 0.1 VBATT VCC = 5V, IOUT = 2mA VCC = 0V, IOUT = 10µA VIL 0.8 VOH ISOURCE = 5mA VCC - 1.5 Output source current 20 VOD = 30mV, VPFI falling MR Pullup Current MR = 0V 50 100 200 µA CHIP-ENABLE GATING MANUAL RESET INPUT BATT OK COMPARATOR LOGIC OUTPUTS |
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