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LTC1727EMS8-5 Datasheet

  • LTC1727EMS8-5

  • Micropower Precision Triple Supply Monitors in 8-Lead MSOP a...

  • 16頁

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LTC1727/LTC1728
Micropower Precision
Triple Supply Monitors
in 8-Lead MSOP and
5-Lead SOT-23 Packages
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Monitors Three Inputs Simultaneously
LTC1727-5: 5V, 3.3V and ADJ
LTC1727-2.5: 2.5V, 3.3V and ADJ
LTC1728-5: 5V, 3.3V and ADJ
LTC1728-2.5: 2.5V, 3.3V and ADJ
LTC1728-1.8: 3V, 1.8V and ADJ
鹵1.5%
Threshold Accuracy Over Temperature
Very Low Supply Current: 10碌A(chǔ) Typ
200ms Reset Time Delay
Active Low RESET Output
Power Supply Glitch Immunity
Guaranteed RESET for V
CC3
鈮?/div>
1V
or V
CC5
/V
CC25
/V
CC18
鈮?/div>
1V
LTC1727 Includes Monitor Output for Each Supply
LTC1727: 8-Lead MSOP and SO Packages
LTC1728: 5-Lead SOT-23 Package
The LTC
廬
1727 is a triple supply monitor intended for
systems with multiple supply voltages. Each supply moni-
tor has its own open-drain output for individual supply
monitoring. A common open-drain reset output remains
low until all three supplies have been in compliance for
200ms. Tight 1.5% accuracy specifications and glitch
immunity ensure reliable reset operation without false
triggering.
The LTC1728 is functionally identical to the LTC1727
without the individual monitor outputs.
The RST output is guaranteed to be in the correct state for
V
CC5
/V
CC25
/V
CC18
or V
CC3
down to 1V. The LTC1727/
LTC1728 may also be configured to monitor any one or
two V
CC
inputs instead of three, depending on system
requirements.
Very low (10碌A(chǔ) typical) supply current makes the LTC1727/
LTC1728 ideal for power conscious systems.
The LTC1727 is available in an 8-lead MSOP or SO
package and the LTC1728 is available in a 5-lead SOT-23
package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Desktop Computers
Notebook Computers
Intelligent Instruments
Portable Battery-Powered Equipment
Network Servers
TYPICAL APPLICATIO
DC/DC
CONVERTER
3.3V
5V
1.8V
SYSTEM
LOGIC
Triple Supply Monitor with Power Good Output
(3.3V, 2.5V and Adjustable)
LTC1727-2.5
3.3V
2.5V
1
2
3
R2
4
V
CC3
COMP3
8
7
6
5
1727/28 TA08
5
V
CC3
RST
1
LTC1728-5
4
0.1碌F
0.1碌F
R1
61.9k
1% 3
R2
100k
1%
V
CC5
2
ADJUSTABLE
SUPPLY
R1
V
CCA
GND
1727/28 TA01
U
R3
10k
R4
10k
POWER
GOOD
SYSTEM
RESET
V
CC25
COMP25
V
CCA
GND
RST
COMPA
U
U
1

LTC1727EMS8-5 產(chǎn)品屬性

  • LTC1727/28

  • 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

  • 最小為 140 ms

  • 3.086V，4.675V，可調(diào)

  • -40°C ~ 85°C

  • 表面貼裝

  • 8-TSSOP，8-MSOP（0.118"，3.00mm 寬）

  • 8-MSOP

  • 管件

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