SP791CN Sipex Corporation, SP791CN Datasheet
SP791CN
Manufacturer Part Number
SP791CN
Description
SOP
Manufacturer
Sipex Corporation
Specifications of SP791CN
Date_code
05+
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SP791CN
Manufacturer:
SIPEX
Quantity:
3 500
Part Number:
SP791CN
Manufacturer:
EXAR/SIPE
Quantity:
20 000
SP791DS/08
Figure 1. Block Diagram
DESCRIPTION
The SP791 is a microprocessor ( P) supervisory circuit that integrates a myriad of compo-
nents involved in discrete solutions to monitor power-supply and battery-control functions in
The SP791 is ideal for a low-cost battery management solution and is well suited for portable,
battery-powered applications with its supply current of 40 A. The 6ns chip-enable propaga-
tion delay, the 25mA current output in battery-backup mode, and the 250mA current output
in standard operation also makes the SP791 suitable for larger scale, high-performance
equipment.
P and digital systems. The SP791 offers complete P monitoring and watchdog functions.
Independent Watchdog Time-Preset or Adjustable
Precision 4.65V Voltage Monitoring
200ms Power-OK/Reset Time Delay
75 A Maximum Operating Supply Current
1.0 A Maximum Battery Backup Current
0.1 A Maximum Battery Standby Current
Power Switching
On-Board Gating of Chip-Enable Signals
Voltage Monitor for Power-Fail or Low Battery
Backup-Battery Monitor
RESET Valid to Vcc=1V
Pin Compatible Upgrade to MAX791
250mA Output in Vcc Mode (0.6 )
25mA Output in Battery Mode (5 )
Memory Write-Cycle Completion
6ns CE Gate Propagation Delay
SWT
WDI
PFI
MR
11
8
7
9
SP791
V
Low Power Microprocessor Supervisory
OUT
+
_
1.25V
SP791 Low Power Microprocessor Supervisory with Battery Switch-Over
®
+
_
6
PFO
TIMEBASE FOR
GENERATION
TRANSITION
WATCHDOG
WATCHDOG
RESET AND
DETECTOR
RESET
15
RESET
WATCHDOG
14
WDO
TIMER
16
WDPO
with Battery Switch-Over
1
1
V
BATT
Now available in Lead Free
3
2V
Vcc
4
GND
4.65V
+
_
+
_
_
+
CHIP-ENABLE
13
CONTROL
_
CE
OUTPUT
150mV
IN
+
+
_
© Copyright 2000 Sipex Corporation
SP791
10
5
12
2
CE OUT
BATT ON
LOWLINE
V
OUT
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