TPS3803-01-Q1_16 Datasheet, PDF (1/25 Pages) Texas Instruments – Voltage Detectors

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TPS3803-01-Q1
TPS3803G15-Q1, TPS3805H33-Q1
SGLS228C – DECEMBER 2003 – REVISED SEPTEMBER 2015
TPS380x-Q1 Voltage Detectors
1 Features
•1 Qualified for Automotive Applications
• Single Voltage Detector (TPS3803): Adjustable
and 1.5 V
• Dual Voltage Detector (TPS3805): Adjustable and
3.3 V
• High ±1.5% Threshold Voltage Accuracy
• Supply Current: 3 μA Typical at V_DD = 3.3 V
• Push/Pull Reset Output (TPS3805),
Open-Drain Reset Output (TPS3803)
• Temperature Range: –40°C to 125°C
• 5-Pin SC-70 Package
2 Applications
• Applications Using DSPs, Microcontrollers, or
Microprocessors
• Advanced Driver Assistance Systems
• Automotive Infotainment
• Automotive Cluster
3 Description
The TPS3803-Q1 and TPS3805-Q1 families of
supervisory circuits provide circuit initialization and
timing supervision, primarily for DSPs and processor-
based systems.
The TPS3803G15-Q1 device has a fixed-sense
threshold voltage V_IT set by an internal voltage
divider, whereas the TPS3803-01-Q1 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-Q1 devices
provide a second adjustable SENSE input. RESET is
asserted in case either 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.
The TPS3803-Q1 and TPS3805-Q1 devices are
characterized for operation over a temperature range
of –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3803-01-Q1
TPS3803G15-Q1 SC-70 (5)
2.00 mm × 1.25 mm
TPS3805H33-Q1
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1.6 V 3.3 V
Typical Application Schematic
R1
VDD
RESET
TPS3805H33-Q1
SENSE
GND
R2
DVDD
CVDD
RESET
Processor
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.