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TPS3813I50DBV

更新时间： 2024-11-23 22:08:59

品牌	Logo	应用领域
德州仪器 - TI		监控
页数	文件大小	规格书
12页	193K
描述
PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG

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TPS3813I50DBV 数据手册

TPS3813J25, TPS3813L30, TPS3813K33, TPS3813I50

PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG

SLVS331A – DECEMBER 2000 – REVISED APRIL 2001

features

typical applications

Window-Watchdog With Programmable

Delay and Window Ratio

Applications Using DSPs, Microcontrollers,

or Microprocessors

6-Pin SOT-23 Package

Safety Critical Systems

Automotive Systems

Heating Systems

Supply Current of 9 µA (Typ)

Power On Reset Generator With a Fixed

Delay Time of 25 ms

TPS3813

DBV PACKAGE

(TOP VIEW)

Precision Supply Voltage Monitor 2.5 V, 3 V,

3.3 V, 5 V

RESET

WDR

Open-Drain Reset Output

WDI

Temperature Range . . . –40°C to 85°C

GND

description

WDT

The TPS3813 family of supervisory circuits pro-

vides circuit initialization and timing supervision,

primarily for DSPs and processor-based systems.

ACTUAL SIZE

3,00 mm x 3,00 mm

During power on, RESET is asserted when supply

voltage (V ) becomes higher than 1.1 V. There

after, the supervisory circuit monitors V and keeps RESET active as long as V remains below the threshold

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

reset. The delay time, t = 25 ms typical, starts after V has risen above the threshold voltage (V ). When the

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

components are required. All the devices of this family have a fixed-sense threshold voltage (V ) set by an

internal voltage divider.

For safety critical applications the TPS3813 family incorporates a so-called window-watchdog with

programmable delay and window ratio. The upper limit of the watchdog time-out can be set by either connecting

WDT to GND, V , or using an external capacitor. The lower limit and thus the window ratio is set by connecting

WDR to GND or V . The supervised processor now needs to trigger the TPS3813 within this window not to

assert a RESET.

typical operating circuit

0.1 µF

WDR RESET

TPS3813

RESET

WDT

WDI

I/O

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.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...12

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TPS3813I50DBVRG4	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
TPS3813I50DBVT	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
TPS3813I50DBVTG4	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
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TPS3813J25	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
TPS3813J25_07	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
TPS3813J25DBV	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG
TPS3813J25DBVR	TI	获取价格	PROCESSOR SUPERVISORY CIRCUITS WITH WINDOW-WATCHDOG

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