Datasheet

(T
A
= +25°C, unless otherwise noted.)
0
-60 120 150
BATTERY SUPPLY CURRENT
vs. TEMPERATURE
(BATTERY-BACKUP MODE)
2
MAX691A TOC-02
TEMPERATURE (°C)
BATTERY SUPPLY CURRENT (µA)
30
1
0.5
-30 0 90
1.5
60
V
CC
= 5V
VBATT = 2.8V
NO LOAD
120
-60 120 150 180
CHIP-ENABLE ON-RESISTANCE
vs. TEMPERATURE
100
MAX691A toc03
TEMPERATURE (°C)
CE ON-RESISTANCE (Ω)
30
60
40
-30 0 90
80
60
V
CC
= 4.75V
VBATT = 2.8V
V
CE IN
= V
CC
/2
20
5
-60 120 150
VBATT to V
OUT
ON-RESISTANCE
vs. TEMPERATURE
MAX691A toc04
TEMPERATURE (°C)
VBATT-to-V
OUT
ON-RESISTANCE (Ω)
30
10
-30 0 90
15
60
V
CC
= 0V
VBATT = 2.8V
VBATT = 2.0V
VBATT = 4.5V
1.2
0.6
-60 120 150
V
CC
to V
OUT
ON-RESISTANCE
vs. TEMPERATURE
MAX691A toc05
TEMPERATURE (°C)
V
CC
-to-V
OUT
ON-RESISTANCE (Ω)
30
0.8
-30 0 90
1.0
0.7
0.9
1.1
60
V
CC
= 5V,
VBATT = 0V
1.50
0
-60 120 150
PFI THRESHOLD
vs. TEMPERATURE
MAX691A toc06
TEMPERATURE (°C)
PFI THRESHOLD (V)
30
0.50
-30 0 90
1.00
0.25
0.75
1.25
60
V
CC
= +5V,
VBATT = 0V
NO LOAD ON PFO
4.75
4.30
-60 120 150
RESET THRESHOLD
vs. TEMPERATURE
MAX691A toc07
TEMPERATURE (°C)
RESET THRESHOLD (V)
30
4.45
-30 0 90
4.65
4.40
4.35
4.50
4.70
4.55
4.60
60
VBATT = 2.8V
MAX691A
MAX800L
MAX693A
MAX800M
36
26
-60 120 150
V
CC
SUPPLY CURRENT
vs. TEMPERATURE
(NORMAL OPERATING MODE)
34
MAX691A toc01
TEMPERATURE (°C)
V
CC
SUPPLY CURRENT (µA)
30
30
28
-30 0 90
32
60
V
CC
= 5V
VBATT = 2.8V
PFI, CE IN = 0V
600
0
-60 120 150
RESET OUTPUT RESISTANCE
vs. TEMPERATURE
MAX691A toc08
TEMPERATURE (°C)
RESET OUTPUT RESISTANCE (Ω)
30
200
-30 0 90
100
500
300
400
60
V
CC
= 5V, VBATT = 2.8V
SOURCING CURRENT
V
CC
= 0V, VBATT = 2.8V
SINKING CURRENT
-60 120 150
RESET DELAY
vs. TEMPERATURE
230
MAX691A toc09
TEMPERATURE (°C)
RESET DELAY (ms)
30
190
170
-30 0 90
210
220
180
200
60
V
CC
= 0V TO 5V STEP
VBATT = 2.8V
Maxim Integrated │ 5
www.maximintegrated.com
MAX691A/MAX693A/
MAX800L/MAX800M
Microprocessor Supervisory Circuits
Typical Operating Characteristics