TPS3809

更新时间： 2024-11-08 11:06:39

品牌	Logo	应用领域
德州仪器 - TI		监控电源管理电路电源电路
页数	文件大小	规格书
13页	821K
描述
具有低电平有效推挽复位功能的 3 引脚电压监控器（复位 IC）

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中文翻译

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数据手册

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TPS3809 数据手册

TPS3809J25, TPS3809L30

TPS3809K33, TPS3809I50

www.ti.com

SLVS228B –AUGUST 1999–REVISED JULY 2012

3-PIN SUPPLY VOLTAGE SUPERVISORS

Check for Samples: TPS3809J25, TPS3809L30, TPS3809K33, TPS3809I50

FEATURES

APPLICATIONS

•

3-Pin SOT-23 Package

•

Applications Using DSPs, Microcontrollers, or

Microprocessors

Supply Current of 9 μA (Typical)

•

Wireless Communication Systems

Portable/Battery-Powered Equipment

Programmable Controls

Intelligent Instruments

Precision Supply Voltage Monitor

2.5 V, 3 V, 3.3 V, 5 V

•

Pin-For-Pin Compatible With MAX 809

Temperature Range: –40°C to +85°C

Industrial Equipment

Notebook/Desktop Computers

Automotive Systems

DESCRIPTION

The TPS3809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for

DSPs and processor-based systems.

During power-on, RESET is asserted when the supply voltage V_DDbecomes higher than 1.1 V. Thereafter, the

supervisory circuit monitors V_DDand keeps RESET active as long as V_DDremains below the threshold voltage

V_IT. An internal timer delays the return of the output to the inactive state (high) to ensure proper system reset.

The delay time, t_d(typ)= 200 ms, starts after V_DDhas risen above the threshold voltage V_IT. When the supply

voltage drops below the threshold voltage V_IT, the output becomes active (low) again. No external components

are required. All the devices of this family have a fixed sense-threshold voltage V_ITset by an internal voltage

divider.

The product spectrum is designed for supply voltages of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are available in a

3-pin SOT-23. The TPS3809 devices are characterized for operation over a temperature range of –40°C to 85°C.

spacer

Figure 2. Typical Application

TPS76333

3.3 V

OUT

5 V

Figure 1. DBV PACKAGE

TOP VIEW)

GND

TMS320LC54x

TPS3809K33

RESET

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...13

中文翻译

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与TPS3809相关器件

型号	品牌	获取价格	描述	数据表
TPS3809-EP	TI	获取价格	增强型产品 3 引脚电源电压监控器
TPS3809I50	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS
TPS3809I50DBV	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS
TPS3809I50DBVR	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS
TPS3809I50DBVRG4	TI	获取价格	具有低电平有效推挽复位功能的 3 引脚电压监控器（复位 IC） \| DBV \| 3 \| -
TPS3809I50DBVT	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS
TPS3809I50DBVTG4	TI	获取价格	3-Pin Supply Voltage Supervisor 3-SOT-23 -40 to 85
TPS3809I50-EP	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS
TPS3809I50MDBVREP	TI	获取价格	暂无描述
TPS3809I50-Q1	TI	获取价格	3-PIN SUPPLY VOLTAGE SUPERVISORS

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