SP791CN SIPEX [Sipex Corporation], SP791CN Datasheet - Page 4

• Manufacturer Part Number: SP791CN
• Description: Low Power Microprocessor Supervisory with Battery Switch-Over
• Manufacturer: SIPEX [Sipex Corporation]

Note 1: Either V
greater than 2.0V.
Note 2: The supply current drawn by the SP791 from the
battery (excluding I
- 1V) < V
period as V
Note
"-" = battery-charging current.
Note 4: WDI is internally connected to a voltage divider
between V
1.6V (typ), disabling the watchdog function.
SP791DS/08
ELECTRICAL CHARACTERISTICS (continued)
(Vcc = 4.75V to 5.5V, V
WDI Threshold Voltage
(Note 4)
WDI Input Current
POWER FAIL COMPARATOR
PFI Input Threshold
PFI Leakage Current
PFO Output Voltage
PFO Short-Circuit Current
PFI-to-PFO Delay
CHIP-ENABLE GATING
CE
CE
(Note 5)
CE
(Reset Active)
CE
Delay (Note 6)
CE
(Reset Active)
RESET-to-CE
MANUAL RESET INPUT
MR Minimum Pulse Width
MR-to-RESET
Propagation Delay
MR Threshold
MR Pull-Up Current
PARAMETER
IN
IN
OUT
IN
OUT
-to-CE
-to-CE
Leakage Current
3:
Short-Circuit Current
Output Voltage High
CC
OUT
CC
< V
falls through this region.
"+"
and GND. If unconnected, WDI is driven to
OUT
OUT
OUT
BATT
CC
Resistance
Propagation
OUT
BATT
=
Delay
or V
. In most applications, this is a brief
) typically goes to 10 A when (V
SP791 Low Power Microprocessor Supervisory with Battery Switch-Over
= 2.8V, T
battery-discharging
BATT
can go to 0V, if the other is
A
= T
MIN
0.75 X V
MIN
to T
1.20
-50
0.1
3.5
3.5
2.7
25
1
MAX
unless otherwise noted, typicals specified at 25
CC
+0.005
current,
+0.01
TYP
0.75
1.25
1.25
-10
20
60
15
15
55
65
15
15
23
6
7
BATT
4
1.30
+25
100
150
250
MAX
0.8
0.4
2.0
50
+1
10
Note 5: The chip-enable resistance is tested with V
4.75V :: V
Note 6: The chip-enable propagation delay is measured
from the 50% point at CE IN to the 50% point at CE
UNITS
mA
V
V
nA
V
mA
ns
V
V
A
A
s
A
s
s
s
A
CE IN
V
V
WDI = 0V
WDI = V
V
I
I
Output sink current
Output source current
V
V
Disabled mode
Enabled mode
Disabled mode, CE OUT = 0V
50 source impedance driver,
C
V
V
Power down
V
MR = 0V
= V
SINK
SOURCE
CC
OD
OD
LOAD
CC
CC
CC
IH
IL
o
= 5V
= 5V, I
= 0V, V
= 5V
= 15mV
= 15mV
C)
= 3.2mA
CE OUT
= 50pF
= 1 A, V
OUT
OUT
BATT
=V
= 100 A
= 2.8V, I
CC
© Copyright 2000 Sipex Corporation
CC
= 5V
/2.
CONDITIONS
OUT
= 1 A
OUT
CC
.
=