Datasheet > LTC2918

LTC2918

更新时间： 2023-12-20 18:46:04

品牌	Logo	应用领域
亚德诺 - ADI		监控
页数	文件大小	规格书
16页	160K
描述
具 27 种可选门限和看门狗定时器的电压监控器

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC2918 数据手册

LTC2917/LTC2918

Voltage Supervisor with

27 Selectable Thresholds

and Watchdog Timer

DESCRIPTION

The LTC^®2917-A/LTC2917-B and LTC2918-A/LTC2918-B

are low voltage single-supply monitors with selectable

thresholds and an adjustable watchdog timer. The parts

operate from 1.5V to 5.5V and consume a quiescent cur-

rent of only 30μA.

FEATURES

■

9 Selectable Supply Voltages

12V, 5V, 3.3V, 2.5V, 1.8V

1.5V, 1.2V, 1V, +ADJ (0.5V)

■

3 Selectable Tolerances

–5%, –10%, –15% (LTC2917)

■

Manual Reset Input (LTC2918)

Two three state inputs select one of nine internally pro-

grammedthresholdswithouttheneedforexternalresistors.

FortheLTC2917,anadditionalthreestateinputdetermines

the tolerance (–5%, –10%, –15%). The tolerance for the

LTC2918isﬁxedat–5%.Thresholdaccuracyisguaranteed

at 1.5% over the entire operating temperature range.

Glitch ﬁltering ensures reliable reset operation without

false triggering.

■

1.5V to 5.5V Supply Operation

■

Adjustable Watchdog Timeout

■

Windowed Watchdog Timeout for Higher Reliability

Applications (LTC2917-B, LTC2918-B)

■

6.2V Shunt Regulator for High Voltage Operation

■

Guaranteed Operation to 125°C

■

Guaranteed Threshold Accuracy: 1.5%

■

Low Quiescent Current: 30μA Typical

■

The reset timeout and the watchdog timeout may be set

with no external components, or adjusted using an exter-

nal capacitor. A windowed watchdog feature is available

for high-reliability applications (B1 versions). A separate

manual reset input on the LTC2918-A/LTC2918-B allows

a simple push button interface.

Power Supply Glitch Immunity

■

Guaranteed RST for V ≥ 0.8V

■

10-Lead MSOP Packages and (3mm × 2mm) DFN

Packages

APPLICATIONS

■

Handheld Devices

Operation to 125°C makes the LTC2917-A/LTC2917-B

and LTC2918-A/LTC2918-B suitable for automotive

applications.

■

Cell Phone Base Stations

■

Automotive Control Systems

■

Network Servers

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

All other trademarks are the property of their respective owners.

■

Optical Networking Systems

TYPICAL APPLICATION

1.8V Supply Monitor with Manual

Reset and Internal Timers Selected

Monitor Selection Table

NOMINAL VOLTAGE

SEL1

SEL2

1.8V

12V

0.1μF

10k

Open

GND

3.3V

LTC2918-A

μP

2.5V

Open

GND

RST

WDI

RST

I/O

1.8V

Open

GND

1.5V

29178 TA01

SEL1

SEL2

1.2V

GND

Open

GND

t = 1.6s

WDU

t = 200ms

RST

ADJ (0.5V)

29178fb

12 3 4 5 6 7...16

下载PDF

与LTC2918相关器件

型号	品牌	描述	获取价格	数据表
LTC2918_15	Linear	Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer	获取价格
LTC2918CDDB-A1#PBF	Linear	LTC2918 - Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer; Package: DF	获取价格
LTC2918CDDB-A1TRMPBF	Linear	Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer	获取价格
LTC2918CDDB-A1TRPBF	Linear	Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer	获取价格
LTC2918CDDB-B1#PBF	Linear	LTC2918 - Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer; Package: DF	获取价格
LTC2918CDDB-B1TRMPBF	Linear	Low Voltage Supervisorwith 27 Selectable Thresholds and Watchdog Timer	获取价格

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC2918

LTC2918 数据手册

与LTC2918相关器件

与LTC2918相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC2918

LTC2918 数据手册

与LTC2918相关器件

与LTC2918相关文章

您还可以找

您在本页遇到什么问题？