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MAX16040LLA44+T Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX16040LLA44+T Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 21 page Low-Power Battery Backup Circuits in Small µDFN Packages 4 _______________________________________________________________________________________ Note 1: All devices are 100% production tested at TA = +25°C. All overtemperature limits are guaranteed by design. Note 2: VBATT can be 0V any time, or VCC can go down to 0V if VBATT is active (except at startup). Note 3: Positive current flows into BATT. Note 4: Guaranteed by design. ELECTRICAL CHARACTERISTICS (continued) (VCC = 2.25V to 5.5V, VBATT = 3V, RESET not asserted, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS WATCHDOG (MAX16034/MAX16038) Watchdog Timeout Period tWD 1.00 1.65 2.25 s Minimum WDI Input Pulse Width tWDI (Note 4) 100 ns VIL 0.3 x VCC WDI Input Voltage VIH 0.7 x VCC V WDI Input Current -1.0 +1.0 µA BATTON (MAX16035/MAX16039) Output Voltage VOL ISINK = 3.2mA, VBATT = 2.1V 0.4 V Sink current, VCC = 5V 60 mA Output Short-Circuit Current Source current, VBATT > 2V 10 30 120 µA RESETIN (MAX16036/MAX16040) RESETIN Threshold VRTH 1.185 1.235 1.285 V RESETIN Input Current 0.01 25 nA RESETIN to Reset Delay (VRTH + 100mV) to (VRTH - 100mV) 1.5 µs CHIP-ENABLE GATING (MAX16033–MAX16036) CEIN Leakage Current RESET asserted ±1 µA CEIN to CEOUT Resistance RESET not asserted, VCC = VTH(MAX), VCEIN = VCC / 2, ISINK = 10mA 100 Ω CEOUT Short-Circuit Current RESET asserted, VCEOUT = 0V 1 2.0 mA VCC = 4.75V 1.5 7 CEIN to CEOUT Propagation Delay (Note 4) 50 Ω source impedance driver, CLOAD = 50pF VCC = 3.15V 2 9 ns VCC = 5V, VCC > VBATT, ISOURCE = 100µA 0.7 x VCC CEOUT Output-Voltage High VCC = 0V, VBATT > 2.2V, ISOURCE = 1µA VBATT - 0.1 V RESET to CEOUT Delay 1µs |
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