ADM8691 Analog Devices, ADM8691 Datasheet - Page 3

• Manufacturer Part Number: ADM8691
• Manufacturer: Analog Devices

Specifications of ADM8691

• Product Description: µP Supv w/ Backup Batt Switch, Adj Reset Period, Adj Watchdog Period, 4.65V Trip point, 100 mA Iout
• Supply Current: 200µA
• Us Price 1000-4999: n/a
• Display In Ist: Yes
• Active For Param Search: Yes

Data Sheet
GENERAL DESCRIPTION
The
complete single-chip solutions for power supply monitoring and
battery control functions in microprocessor systems. These func-
tions include microprocessor reset, backup battery switchover,
watchdog timer, CMOS RAM write protection, and power failure
warning. The complete family provides a variety of configurations
to satisfy most microprocessor system requirements.
Table 1. Product Selection Guide
Part No.
ADM8690
ADM8691
ADM8695
ADM8690/ADM8691/ADM8695
Nominal Reset
Time
50 ms
50 ms or ADJ
200 ms or ADJ
Nominal V
Reset Threshold
4.65 V
4.65 V
4.65 V
supervisory circuits offer
CC
Nominal Watchdog
Timeout Period
1.6 sec
100 ms, 1.6 sec, ADJ
100 ms, 1.6 sec, ADJ
Rev. C | Page 3 of 24
The
advanced epitaxial CMOS process that combines low power
consumption (0.7 mW), extremely fast chip enable gating (3 ns),
and high reliability. RESET assertion is guaranteed with V
low as 1 V. In addition, the power switching circuitry is designed
for minimal voltage drop, thereby permitting increased output
current drive of up to 100 mA without the need for an external
pass transistor.
See Table 1 for a product selection guide listing the character-
istics of each device. To place an order, see the Ordering Guide.
ADM8690/ADM8691/ADM8695
Battery Backup
Switching
Yes
Yes
Yes
ADM8690/ADM8691/ADM8695
Base Drive,
Ext PNP
No
Yes
Yes
are fabricated using an
Chip Enable
Signals
No
Yes
Yes
CC
as