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LTC1726EMS8-2.5 Datasheet

  • LTC1726EMS8-2.5

  • Triple Supply Monitor and uP Supervisor with Adjustable Rese...

  • 12頁(yè)

  • LINER

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Final Electrical Specifications
LTC1726
Triple Supply Monitor and
碌P
Supervisor with Adjustable
Reset and Watchdog Timer
January 2000
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
s
s
Monitors Three Inputs Simultaneously
LTC1726-5: 5V, 3.3V and ADJ
LTC1726-2.5: 2.5V, 3.3V and ADJ
鹵1.5%
Threshold Accuracy Over Temperature
Low Supply Current: 16碌A(chǔ) Typ
Adjustable Reset Timeout
Adjustable Watchdog Timeout
Active Low Open-Drain Reset Output
Power Supply Glitch Immunity
Guaranteed RESET for V
CC3
鈮?/div>
1V or V
CC25
/V
CC5
鈮?/div>
1V
MS8 and SO-8 Packages
The LTC
廬
1726 is a triple supply monitor and microproces-
sor supervisory circuit with adjustable reset and watchdog
functions intended for systems with multiple supply volt-
ages. The part has a common open-drain reset output with
an adjustable delay. The reset and watchdog time-out
periods are both adjustable using external capacitors.
Tight 1.5% accuracy specifications and glitch immunity
ensure reliable reset operation without false triggering.
The RST output is guaranteed to be in the correct state for
V
CC5
/V
CC25
or V
CC3
down to 1V. The LTC1726 may also be
configured to monitor any one or two V
CC
inputs instead
of three, depending on system requirements.
The low (16碌A(chǔ) typical) supply current makes the LTC1726
ideal for power-conscious systems.
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
s
s
s
s
s
Desktop Computers
Notebook Computers
Intelligent Instruments
Portable Battery-Powered Equipment
Network Servers
TYPICAL APPLICATIO S
A 3.3V, 5V and 1.8V Monitor
1.8V
(V
TRIP
= 1.665V)
3.3V
0.1碌F
5V
0.1碌F
C
RT
47nF
8
C
WT
47nF
7
WT
GND
t
RT
= 155ms
t
WT
= 1s
4
1726 TA01
A 3.3V, 2.5V and 1.8V Monitor
1.8V
(V
TRIP
= 1.665V)
3.3V
0.1碌F
2.5V
0.1碌F
RESET
碌P
R1
66.5k
1%
2
1
3
6
R2
100k
1%
V
CC5
V
CC3
V
CCA
RT
RST
LTC1726-5
5
WDI
C
RT
47nF
8
C
WT
47nF
7
I/O
t
RT
= 155ms
t
WT
= 1s
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
R1
66.5k
1%
2
1
3
6
R2
100k
1%
RESET
碌P
5
WT
GND
4
1726 TA02
U
U
V
CC25
V
CC3
V
CCA
RT
RST
LTC1726-2.5
WDI
I/O
1

LTC1726EMS8-2.5 產(chǎn)品屬性

  • LTC1726

  • 50

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • -

  • 多壓監(jiān)控器

  • 3

  • 開路漏極或開路集電極

  • 低有效

  • 可調(diào)節(jié)/可選擇

  • 2.337V，3.085V，可調(diào)

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-MSOP

  • 管件

  • Q1279395

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