參數(shù)資料
型號(hào): TPS3803-01QDCKRQ1
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO5
封裝: PLASTIC, SC-70, 5 PIN
文件頁(yè)數(shù): 1/16頁(yè)
文件大小: 447K
代理商: TPS3803-01QDCKRQ1
1
FEATURES
APPLICATIONS
DESCRIPTION
GND
V
DD
RESET
SENSE
NC
(1)
NC
2
3
4
1
5
DCK PACKAGE
(TOP VIEW)
NC – No connection
(1) SENSE on TPS3803-01, TPS3805H33
NC on TPS3803G15
RESET
V
D D
SENSE
GND
DV
DD
CV
D D
RESET
GND
3.3 V
1.6 V
R1
R2
TPS3805H33
TMS320VC5416
SGLS228B – DECEMBER 2003 – REVISED JANUARY 2008
www.ti.com
VOLTAGE DETECTORS
Applications Using DSPs, Microcontrollers, or
Qualified for Automotive Applications
Microprocessors
Single Voltage Detector (TPS3803):
Wireless Communication Systems
Adjustable/1.5 V
Portable/Battery-Powered Equipment
Dual Voltage Detector (TPS3805):
Programmable Controls
Adjustable/3.3 V
Intelligent Instruments
High ±1.5% Threshold Voltage Accuracy
Industrial Equipment
Supply Current: 3 A Typical at V
DD = 3.3 V
Notebook/Desktop Computers
Push/Pull Reset Output (TPS3805),
Automotive Systems
Open-Drain Reset Output (TPS3803)
Temperature Range: –40°C to 125°C
5-Pin SC-70 Package
The TPS3803 and TPS3805 families of supervisory
circuits
provide
circuit
initialization
and
timing
supervision, primarily for DSPs and processor-based
systems.
The TPS3803G15 device has a fixed-sense threshold
voltage VIT set by an internal voltage divider, whereas
the TPS3803-01 has an adjustable SENSE input that
can be configured by two external resistors. In
addition to the fixed sense threshold monitored at
VDD, the TPS3805 devices provide a second
adjustable SENSE input. RESET is asserted in case
either of the two voltages drops below VIT.
During power on, RESET is asserted when supply
voltage VDD becomes higher than 0.8 V. Thereafter,
the supervisory circuit monitors VDD (and/or SENSE)
and keeps RESET active as long as VDD or SENSE
remains below the threshold voltage VIT. As soon as
VDD (SENSE) rises above the threshold voltage VIT,
RESET is deasserted again. The product spectrum is
designed for 1.5 V, 3.3 V, and adjustable supply
voltages.
The devices are available in a 5-pin SC-70 package.
The
TPS3803
and
TPS3805
devices
are
characterized for operation over a temperature range
of –40
°C to 125°C.
1
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.
Copyright 2003–2008, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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