TPS3803-01-EP_16 Datasheet, PDF (1/18 Pages) Texas Instruments – VOLTAGE DETECTOR

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VOLTAGE
DETECTOR
TPS3803-01-EP
TPS3803G15-EP
TPS3805H33-EP
SGLS227C − DECEMBER 2003 − REVISED JUNE 2007
FEATURES
D Controlled Baseline
− One Assembly/Test Site, One Fabrication
Site
D Extended Temperature Performance of Up to
−55°C to +125°C
D Enhanced Diminishing Manufacturing
Sources (DMS) Support
D Enhanced Product-Change Notification
D Qualification Pedigree⁽¹⁾
D Single Voltage Detector (TPS3803):
Adjustable/1.5 V
D Dual Voltage Detector (TPS3805):
Adjustable/3.3 V
D High ±1.5% Threshold Voltage Accuracy
D Supply Current: 3 µA Typical at V_DD = 3.3 V
D Push/Pull Reset Output (TPS3805) Open-Drain
Reset Output (TPS3803)
D 5-Pin SC−70 Package
(1) _{Component qualification in accordance with JEDEC and industry}
standards to ensure reliable operation over an extended
temperature range. This includes, but is not limited to, Highly
Accelerated Stress Test (HAST) or biased 85/85, temperature
cycle, autoclave or unbiased HAST, electromigration, bond
intermetallic life, and mold compound life. Such qualification
testing should not be viewed as justifying use of this component
beyond specified performance and environmental limits.
APPLICATIONS
D Applications Using DSPs, Microcontrollers,
or Microprocessors
D Wireless Communication Systems
D Portable/Battery-Powered Equipment
D Programmable Controls
D Intelligent Instruments
D Industrial Equipment
D Notebook/Desktop Computers
D Automotive Systems
DESCRIPTION
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
V_IT 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 V_DD, the TPS3805 devices
provide a second adjustable SENSE input. RESET is
asserted in case any of the two voltages drops below V_IT.
During power on, RESET is asserted when supply voltage
V_DD becomes higher than 0.8 V. Thereafter, the supervisory
circuit monitors V_DD (and/or SENSE) and keeps RESET
active as long as V_DD or SENSE remains below the threshold
voltage V_IT. As soon as V_DD (SENSE) rises above the
threshold voltage V_IT, 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.
DCK PACKAGE
(Top View)
TPS3803−01, TPS3803G15, TPS3805
NC 1
GND
2
5
SENSE
NC⁽¹⁾
RESET
3
4
V_DD
(1) NC = No Connection on TPS3803G15
Typical Operating Circuit
1.6 V 3.3 V
R1
V_DD RESET
TPS3805H33
SENSE _GND
R2
DV_DD
RESET
CV_DD
TMS320VC5416
GND
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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.
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