IMP802LCPA IMP [IMP, Inc], IMP802LCPA Datasheet - Page 3

• Manufacturer Part Number: IMP802LCPA
• Description: ?P POWER SUPPLY SUPERVISOR WITH BATTERY BACKUP SWITCH
• Manufacturer: IMP [IMP, Inc]

Pin Terminal Voltage with Respect to Ground
Input Current at V
Input Current at V
Input Current at GND . . . . . . . . . . . . . . . . . 20mA
Output Current:
V
V
All Other Inputs* . . . . . . . . . . . . . . . . . . . –0.3V to (V
V
All Other Inputs . . . . . . . . . . . . . . . . . . . 20mA
Rate of Rise: V
IMP802L/IMP802M
IMP690A/IMP692A
CC
BATT
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 6.0V
. . . . . . . . . . . . . . . Short circuit protected
. . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3V to 6.0V
––––
1
2
3
4
5
6
7
8
Pin Number
BATT
CC
BATT
. . . . . . . . . . . . . . . . . . 200mA
and V
. . . . . . . . . . . . . . . . . 50mA
CC
. . . . . . . . . . 100V/ s
IMP805L
––––
1
2
3
4
5
6
7
8
RESET
Name
RESET
V
GND
V
PFO
WDI
V
PFI
BATT
OUT
CC
CC
+ 0.3V)
IMP690A
IMP690A
Function
Voltage supply for RAM. When V
+5V power supply input
Ground
Power failure monitor input. PFI is connected to the internal power fail
Power-fail output. PFO is active LOW whenever the PFI pin is less than
Watchdog input. The WDI input monitors microprocessor activity. An
Active-LOW reset output. When triggered by V
Active-HIGH reset output. The inverse of RESET.
Auxiliary power or backup-battery input. V
connects to V
reset threshold, this output will be connected to the backup supply at
V
continuous power to the CMOS RAM.
comparator which is referenced to 1.25V. The power fail output (PFO)
is active LOW but remains HIGH if PFI is above 1.25V. If this feature is
unused, the PFI pin should be connected to GND or V
1.25V.
internal timer is reset with each transition of the WDI input. If WDI is held
HIGH or LOW for longer than the watchdog timeout period, typically 1.6
seconds, RESET (or RESET) is asserted for the reset pulse width time,
t
threshold or by watchdog timer timeout, RESET (or RESET) pulses low
for the reset pulse width, t
below the reset threshold (4.65V in the IMP690A/IMP802L and 4.4V in
the IMP692A/IMP802L) and remains low for 200ms after V
the reset threshold.
GND if the function is not used. This input has about 40mV of hysteresis
to prevent rapid toggling between V
RS
BATT
, of 140ms, minimum.
Operating Temperature Range (C Devices) . . . . 0 C to 70 C
Operating Temperature Range (E Devices) . . . . –40 C to 85 C
Storage Temperature Range . . . . . . . . . . . . . . . . . –65 C to 160 C
Lead Temperature Soldering, (10 sec) . . . . . . . . 300 C
* The input voltage limits on PFI and WDI may be exceeded if the
These are stress ratings only and functional operation is not implied.
Exposure to absolute maximum ratings for prolonged time periods may
affect device reliability.
(or V
current is limited to less than 10mA
Continuous Power Dissipation
Plastic DIP (derate 9mW/ C above 70 C) . . . 800mW
SO (derate 5.9mW/ C above 70 C) . . . . . . . . 500mW
CerDIP (derate 8mW/ C above 70 C) . . . . . . 650mW
CC
, whichever is higher) through the MOS switch to provide
CC
, 692A
, 692A
through a P-channel MOS device. If V
RS
, typically 200ms. It will remain low if V
, 802L, 802M, 805L
Absolute Maximum Ratings
, 802L, 802M, 805L
CC
CC
is above the reset threshold, V
and V
BATT
BATT
should be connected to
CC
.
Pin Description
falling below the reset
OUT
CC
falls below the
.
CC
rise above
OUT
CC
is
3