Datasheet > LM809M3-4.38/NOPB

LM809M3-4.38/NOPB

更新时间： 2024-11-29 11:10:15

品牌	Logo	应用领域
德州仪器 - TI		监控
页数	文件大小	规格书
20页	857K
描述
具有低电平有效推挽复位功能、用于监控电源的 3 引脚电压监控器（复位 IC） \| DBZ \| 3 \| -40 to 105

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LM809, LM810

SNVS052E –SEPTEMBER 1999–REVISED APRIL 2016

LM809/LM810 3-Pin Microprocessor Reset Circuits

1 Features

3 Description

The LM809 and LM810 microprocessors supervisory

circuits can be used to monitor the power supplies in

microprocessor and digital systems. They provide a

reset to the microprocessor during power-up, power-

down and brown-out conditions.

•

Precision Monitoring of Supply Voltages

–

Available Threshold Options:

2.63 V, 2.93 V, 3.08 V, 4.38 V, 4.63 V

•

Superior Upgrade to MAX809 and MAX810

Fully Specified Over Temperature

The function of the LM809 and LM810 are to monitor

the V_CCsupply voltage, and assert a reset signal

whenever this voltage declines below the factory-

programmed reset threshold. The reset signal

remains asserted for 240 ms after V_CCrises above

the threshold. The LM809 has an active-low RESET

output, while the LM810 has an active-high RESET

output.

140-ms Minimum Power-On Reset Pulse Width,

240-ms Typical

–

Active-Low RESET Output (LM809)

Active-High RESET Output (LM810)

•

Ensured RESET Output Valid for V_CC≥ 1 V

Low Supply Current, 15-µA Typical

Power Supply Transient Immunity

Seven standard reset voltage options are available,

suitable for monitoring 5-V, 3.3-V, and 3-V supply

voltages.

2 Applications

With a low supply current of only 15 µA, the LM809

and LM810 are ideal for use in portable equipment.

•

Factory Automation

Building Automation

Programmable Logic Control

Renewable Energy

Microprocessor Systems

Computers

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM809, LM810

SOT-23 (3)

2.92 mm × 1.30 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Controllers

Intelligent Instruments

Portable/Battery-Powered Equipment

Automotive

Typical Application for Microprocessor Reset Circuit

V_CC

µP

LM809

RESET

INPUT

RESET

GND

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...20

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LM809M3-4.38/NOPB 替代型号

型号	品牌	替代类型	描述	数据表
LM809M3X-4.38/NOPB	TI	类似代替	具有低电平有效推挽复位功能、用于监控电源的 3 引脚电压监控器（复位 IC） \| DBZ
MIC1815-10UY	MICREL	功能相似	Microprocessor Reset Circuit
STM809MWX6F	STMICROELECTRONICS	功能相似	Reset Circuit

与LM809M3-4.38/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LM809M3-4.63	NSC	获取价格	3-Pin Microprocessor Reset Circuits
LM809M3-4.63	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, 3 PIN
LM809M3-4.63/NOPB	TI	获取价格	具有低电平有效推挽复位功能、用于监控电源的 3 引脚电压监控器（复位 IC） \| DBZ
LM809M3X-2.45	NSC	获取价格	3-Pin Microprocessor Reset Circuits
LM809M3X-2.45/NOPB	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, 3 PIN
LM809M3X-2.63	NSC	获取价格	3-Pin Microprocessor Reset Circuits
LM809M3X-2.63	TI	获取价格	LM809/LM810 3-Pin Microprocessor Reset Circuits
LM809M3X-2.63/NOPB	NSC	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, 3 PIN, Power Management Circuit
LM809M3X-2.63/NOPB	TI	获取价格	具有低电平有效推挽复位功能、用于监控电源的 3 引脚电压监控器（复位 IC） \| DBZ
LM809M3X-2.93	NSC	获取价格	3-Pin Microprocessor Reset Circuits

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