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參數資料
| 型號： | TPS3809K33DBV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 3-PIN SUPPLY VOLTAGE SUPERVISORS |
| 中文描述： | 3引腳電源電壓監控器 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 113K |
| 代理商： | TPS3809K33DBV |
TPS3809J25, TPS3809L30, TPS3809K33, TPS3809I50
3-PIN SUPPLY VOLTAGE SUPERVISORS
SLVS228 – AUGUST 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
3-Pin SOT-23 Package
Supply Current of 9
μ
A (Typical)
Precision Supply Voltage Monitor
2.5 V, 3 V, 3.3 V, 5 V
Power-On Reset Generator With Fixed
Delay Time of 200 ms
Pin-For-Pin Compatible With MAX 809
Temperature Range . . . –40
°
C to 85
°
C
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
DD
becomes higher than 1.1 V. Thereafter, the
supervisory circuit monitors V
DD
and keeps RESET active as long as V
DD
remains 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
DD
has 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
IT
set 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.
typical applications
3.3 V
TPS3809K33
TMS320LC54x
GND
GND
RESET
RESET
VDD
VDD
Applications Using DSPs, Microcontrollers,
or Microprocessors
Wireless Communication Systems
Portable/Battery-Powered Equipment
Programmable Controls
Intelligent Instruments
Industrial Equipment
Notebook/Desktop Computers
Automotive Systems
TPS76333
GND
OUT
IN
5 V
Copyright
1999, Texas Instruments Incorporated
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.
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.
2
3
TPS3809 . . . DBV PACKAGE
(TOP VIEW)
1
RESET
VDD
GND
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS3809K33DBV | 制造商:Texas Instruments 功能描述:SUPERVISORY CIRCUIT 3809 SOT-23-3 |
| TPS3809K33DBVR | 功能描述:監控電路 2.93V Volt. Sup RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3809K-33DBVR | 制造商:Texas Instruments 功能描述:Voltage Detector, Fixed, +2.93V, 3 Pin, Plastic, TO-236 |
| TPS3809K33DBVRG4 | 功能描述:監控電路 3-Pin Supply Voltage Supervisor RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| TPS3809K33DBVT | 功能描述:監控電路 2.93V Volt. Sup RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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