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LTC699IS8 Datasheet

  • LTC699IS8

  • Microprocessor Supervisory Circuit

  • 4頁

  • LINER

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LTC699
Microprocessor
Supervisory Circuit
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
Guaranteed
Reset Assertion at V
CC
= 1V
1.5mA Maximum Supply Current
SO-8 Packaging
4.65V Precision Voltage Monitor
Power OK/Reset Time Delay: 200ms
Minimum External Component Count
Performance Specified Over Temperature
Superior Upgrade for MAX699
The LTC699 provides power supply monitoring for
microprocessor-based systems. The features include mi-
croprocessor reset and watchdog timing. Precise internal
voltage reference and comparator circuit monitor the
power supply line. When an out-of-tolerance condition
occurs, the RESET output is forced to active low. In
addition, the RESET output is guaranteed to remain logic
low even with V
CC
as low as 1V.
An internal watchdog timer is also available, which forces
the RESET output to active low when the watchdog input
is not toggled prior to the time-out period of 1.6 seconds.
The LTC699 is offered in DIP and surface mount packages.
APPLICATI
s
s
s
s
S
Critical
碌P
Power Monitoring
Intelligent Instruments
Computers and Controllers
Automotive Systems
TYPICAL APPLICATI
+5V
BLOCK DIAGRA
VCC
500k
V
CC
RESET
LTC699
WDI
GND
碌P POWER
碌P RESET
+
RESET PULSE
GENERATOR
碌P
SYSTEM
I/O LINE
1.3V
C1
鈥?/div>
OSC
0.1碌F
0.1碌F
WDI
TRANSITION
DETECTOR
LTC699 TA1
MICROPROCESSOR RESET AND WATCHDOG TIMING IN
A SINGLE CHIP FOR MICROPROCESSOR SYSTEMS.
W
U
RESET
GND
WATCHDOG
TIMER
LTC699 BD
UO
UO
1

LTC699IS8 產(chǎn)品屬性

  • LTC699

  • 100

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • -

  • 簡單復位/加電復位

  • 1

  • 開路漏極或開路集電極

  • 低有效

  • 最小為 140 ms

  • 4.65V

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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