Datasheet > LTC1326

LTC1326

更新时间： 2023-12-20 18:46:16

品牌	Logo	应用领域
亚德诺 - ADI		监视器
页数	文件大小	规格书
16页	207K
描述
微功率、精准型三电源监视器

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LTC1326 数据手册

LTC1326/LTC1326-2.5

Micropower Precision

Triple Supply Monitors

FEATURES

DESCRIPTIO

The LTC^®1326/LTC1326-2.5 are triple supply monitors

intended for systems with multiple supply voltages. They

provide micropower operation, small size and high accu-

racy supply monitoring.

■

Simultaneously Monitors Three Supplies

LTC1326: 5V, 3.3V and ADJ

LTC1326-2.5: 2.5V, 3.3V and ADJ

■

Guaranteed Threshold Accuracy: ±0.75%

■

Low Supply Current: 20µA

Tight 0.75% threshold accuracy and glitch immunity

ensure reliable reset operation without false triggering.

The 20µA typical supply current makes the LTC1326/

LTC1326-2.5 ideal for power-conscious systems.

■

Internal Reset Time Delay: 200ms

■

Manual Push-Button Reset Input

■

Active Low and Active High Reset Outputs

■

Active Low “Soft” Reset Output

■

The RST output is guaranteed to be in the correct state for

_CC3,V_CC5orV_CC25downto1V.TheLTC1326/LTC1326-2.5

can be configured to monitor one, two or three inputs,

depending on system requirements.

Power Supply Glitch Immunity

Guaranteed RESET for V_CC3≥ 1V or V_CC5≥ 1V

or V_CC25≥ 1V

■

8-Pin SO and MSOP Packages

A manual push-button reset input provides the ability to

generate a very narrow “soft” reset pulse (100µs typ) or a

200ms reset pulse equivalent to a power-on reset. Both

SRST and RST outputs are open-drain and can be OR-tied

with other reset sources.

APPLICATIO S

■

Desktop Computers

■

Notebook Computers

■

Intelligent Instruments

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents, including 4843302.

■

Portable Battery-Powered Equipment

TYPICAL APPLICATIO

RST Output Voltage vs Supply Voltage (LTC1326-2.5)

2.5V

3.5

3.3V

= V

CCA CC3

DC/DC

CONVERTER

SYSTEM

LOGIC

CC25

3.0

4.7k PULL-UP FROM RST TO V

CORE

CC3

= 25°C

2.5

2.0

1.5

1.0

0.5

0.1µF

CC25 CC3 CCA

LTC1326-2.5

RST

PBR

SRST

GND

2.0

(V)

3.0

3.5

0.5

1.0 1.5

2.5

PUSH-BUTTON

RESET

CC3

1326/2.5 TA02

1326/2.5 TA01

132625fc

12 3 4 5 6 7...16

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