MAX6887 MAXIM [Maxim Integrated Products], MAX6887 Datasheet - Page 4

• Manufacturer Part Number: MAX6887
• Description: Hex/Quad, Power-Supply Supervisory Circuits
• Manufacturer: MAXIM [Maxim Integrated Products]

Hex/Quad, Power-Supply Supervisory Circuits
4
(V
MAX6887 MAX6888
IN1
200
175
150
125
100
_______________________________________________________________________________________
75
50
25
30
29
28
27
26
25
24
23
22
21
20
0
–V
1
2
3
4
PROPAGATION DELAY vs. TEMPERATURE
-40
1
IN4
100mV OVERDRIVE
PIN
vs. IN_THRESHOLD OVERDRIVE
or V
IN_ THRESHOLD OVERDRIVE (mV)
MAXIMUM IN_ TRANSIENT
-15
CC
IN_ TO RESET OR OV
1
2
3
4
TEMPERATURE (°C)
10
= 5V, WDI = GND, MARGIN = MR = BP, T
10
PO_ ASSERTION OCCURS
ABOVE THIS LINE
35
RESET
NAME
WDO
GND
100
OV
60
Open-Drain, Active-Low Reset Output. RESET asserts when any input voltage falls below its
undervoltage threshold or when MR is pulled low. RESET remains low for 200ms after all
assertion-causing conditions are cleared. An external pullup resister is required.
Open-Drain, Active-Low Watchdog Timer Output. Logic output for the watchdog timer function.
WDO goes low when WDI is not strobed high-to-low or low-to-high within the watchdog timeout
period.
Open-Drain Active-Low Overvoltage Output. OV asserts when any input voltage exceeds its
overvoltage threshold. OV remains low for 25µs after all overvoltage conditions are cleared.
An external pullup resistor is required.
Ground
1000
85
1.700
1.675
1.650
1.625
1.600
1.575
1.550
1.525
1.500
Typical Operating Characteristics (continued)
400
350
300
250
200
150
100
50
0
OUTPUT-VOLTAGE LOW vs. SINK CURRENT
-40
0
2
WATCHDOG TIMEOUT PERIOD
-15
A
4
vs. TEMPERATURE
= +25°C, unless otherwise noted.)
SINK CURRENT (mA)
TEMPERATURE (°C)
10
6
8
35
10
12
FUNCTION
60
14
85
1.005
1.004
1.003
1.002
1.001
1.000
0.999
0.998
0.997
0.996
0.995
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
-40
-40
MR TO RESET OUTPUT PROPAGATION
NORMALIZED IN_ THRESHOLD
DELAY vs. TEMPERATURE
-15
-15
Pin Description
vs. TEMPERATURE
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
35
35
60
60
85
85