MAX6885 データシートの表示（PDF） - Maxim Integrated
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MAX6885 Datasheet PDF : 34 Pages
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EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
Typical Operating Characteristics (continued)
(VIN1–VIN4 or VCC = 5V, AUXIN = WDI = GND, MARGIN = MR = DBP. Typical values are at TA = +25°C, unless otherwise noted.)
MR TO RESET OR UV/OV OUTPUT
PROPAGATION DELAY vs. TEMPERATURE
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
-40 -15
10
35
60
85
TEMPERATURE (°C)
ADC ACCURACY vs. TEMPERATURE
0.5
0.4
0.3
0.2
VIN5 = 2V,
10mV/STEP
0.1
RANGE
VIN1 = 5V,
20mV/STEP
RANGE
0
-0.1
VAUXIN = 1V
-0.2
-0.3
-0.4
-0.5
-40 -15
10
35
60
85
TEMPERATURE (°C)
PIN
MAX6884 MAX6885
1
1
2
2
3
3
4
4
5
5
6
6
Pin Description
NAME
RESET
WDO
UV/OV
GND
WDI
MR
FUNCTION
Reset Output. Configurable, active-low, open drain, or weak pullup. RESET assumes its
programmed conditional output state when VCC exceeds UVLO (2.5V).
Watchdog Timer Output. Configurable, active-low, open drain, or weak pullup. WDO
asserts when WDI is not toggled with a valid high-to-low or low-to-high transition within
the watchdog timeout period.
Undervoltage/Overvoltage Output. Configurable, active-low, open drain, or weak pullup.
UV/OV assumes its programmed conditional output state when VCC exceeds UVLO
(2.5V).
Ground
Watchdog Timer Input. Logic input for the watchdog timer function. If WDI is not toggled
with a valid low-to-high or high-to-low transition within the watchdog timeout period,
WDO asserts. Progam initial and normal watchdog timeout periods from 6.25ms to
102.4s. WDI is internally pulled down to GND through a 10µA current sink.
Manual Reset Input. Program MR to assert RESET and/or UV/OV when MR is asserted.
Leave MR unconnected or connect to DBP if unused. MR is internally pulled up to DBP
through a 10µA current source.
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