TPS3808G01-Q1_16 Datasheet, PDF (1/25 Pages) Texas Instruments – Low-Quiescent-Current Programmable-Delay Supervisory Circuit

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TPS3808G01-Q1, TPS3808G12-Q1, TPS3808G125-Q1, TPS3808G15-Q1
TPS3808G18-Q1, TPS3808G30-Q1, TPS3808G33-Q1, TPS3808G50-Q1
SBVS085I – JANUARY 2007 – REVISED JUNE 2015
TPS3808Gxx-Q1 Low-Quiescent-Current Programmable-Delay Supervisory Circuit
1 Features
•1 Qualified for Automotive Applications
• Power-On Reset Generator With Adjustable Delay
Time: 1.25 ms to 10 s
• Very Low Quiescent Current: 2.4 μA Typical
• High Threshold Accuracy: 0.5% Typical
• Fixed Threshold Voltages for Standard Voltage
Rails From 1.2 V to 5 V and Adjustable Voltage
Down to 0.4 V Are Available
• Manual Reset (MR) Input
• Open-Drain RESET Output
• Temperature Range: –40°C to 125°C
• Small SOT-23 Package
2 Applications
• DSP or Microcontroller Applications
• FPGA and ASIC Applications
• Automotive Vision
• Automotive Radar
3 Description
The TPS3808Gxx-Q1 microprocessor supervisory
circuits monitor system voltages from 0.4 V to 5 V,
asserting an open-drain RESET signal when the
SENSE voltage drops below a preset threshold or
when the manual reset (MR) pin drops to a logic low.
The RESET output remains low for the user-
adjustable delay time after the SENSE voltage and
MR return above their thresholds.
The TPS3808Gxx-Q1 device uses a precision
reference to achieve 0.5% threshold accuracy for V_IT
≤ 3.3 V. The reset delay time can be set to 20 ms by
disconnecting the C_T pin, 300 ms by connecting the
C_T pin to V_DD using a resistor, or can be user-
adjusted from 1.25 ms to 10 s by connecting the C_T
pin to an external capacitor. The TPS3808Gxx-Q1
has a very low typical quiescent current of 2.4 μA, so
it is well suited for battery-powered applications. The
device is available in a small SOT-23 package and is
fully specified over a temperature range of –40°C to
125°C (T_J).
For more information about TI's voltage supervisor
portfolio, visit the Supervisor and Reset IC Overview
Page page.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS3808Gxx-Q1
SOT-23 (6)
SON (6)
2.90 mm × 1.60 mm
2.00 mm × 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application Schematic
1.2 V
3.3 V
SENSE V_DD
TPS3808G12
RESET
C_{T GND}
SENSE V_DD
TPS3808G33
MR
RESET
C_{T GND}
V_I/O V_CORE
DSP
GPIO
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.