Datasheet

MAX6884/MAX6885
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
_______________________________________________________________________________________ 7
PROPAGATION DELAY (µs)
1.25
1.50
1.75
2.00
2.50
2.25
2.75
3.00
1.00
MR TO RESET OR UV/OV OUTPUT
PROPAGATION DELAY vs. TEMPERATURE
MAX6884 toc10
TEMPERATURE (
°
C)
603510-15-40 85
PIN
MAX6884
MAX6885
NAME FUNCTION
11RESET
Reset Output. Configurable, active-low, open drain, or weak pullup. RESET assumes its
programmed conditional output state when V
CC
exceeds UVLO (2.5V).
22WDO
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.
33UV/OV
Undervoltage/Overvoltage Output. Configurable, active-low, open drain, or weak pullup.
UV/OV assumes its programmed conditional output state when V
CC
exceeds UVLO
(2.5V).
44GND Ground
55WDI
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.
66MR
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.
Typical Operating Characteristics (continued)
(V
IN1
–V
IN4
or V
CC
= 5V, AUXIN = WDI = GND, MARGIN = MR = DBP. Typical values are at T
A
= +25°C, unless otherwise noted.)
ADC ACCURACY vs. TEMPERATURE
TOTAL UNADJUSTED ERROR (%)
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
MAX6884 toc11
TEMPERATURE (
°
C)
603510-15-40 85
V
IN5
= 2V,
10mV/STEP
RANGE
V
IN1
= 5V,
20mV/STEP
RANGE
VAUXIN = 1V
Pin Description