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TPS3808G50 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS3808G50
Description  Low Quiescent Current, Programmable-Delay Supervisory Circuit
Download  15 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS3808G50 Fiches technique(HTML) 1 Page - Texas Instruments

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FEATURES
DESCRIPTION
APPLICATIONS
Typical Application Circuit
1.2V
3.3V
TPS3808G12
TPS3808G33
DSP
SENSE
V
DD
V
DD
SENSE
V
I/O
V
CORE
GPIO
GND
GND
GND
RESET
MR
C
T
C
T
RESET
DBV PACKAGE
SOT23
(TOP VIEW)
VDD
SENSE
CT
RESET
GND
MR
1
2
3
6
5
4
RESET
GND
MR
6
5
4
V
DD
SENSE
C
T
1
2
3
DRV PACKAGE
2mm x 2mm QFN
(TOP VIEW)
Power
PAD
TPS3808
SBVS050F – MAY 2004 – REVISED OCTOBER 2006
Low Quiescent Current, Programmable-Delay
Supervisory Circuit
Power-On Reset Generator with Adjustable
The
TPS3808xxx
family
of
microprocessor
Delay Time: 1.25ms to 10s
supervisory circuits monitor system voltages from
0.4V to 5.0V, asserting an open drain RESET signal
Very Low Quiescent Current: 2.4
µA typ
when the SENSE voltage drops below a preset
High Threshold Accuracy: 0.5% typ
threshold or when the manual reset (MR) pin drops
Fixed Threshold Voltages for Standard
to a logic low. The RESET output remains low for the
Voltage Rails from 0.9V to 5V and Adjustable
user adjustable delay time after the SENSE voltage
Voltage Down to 0.4V Are Available
and manual reset (MR) return above their thresholds.
Manual Reset (MR) Input
The TPS3808 uses a precision reference to achieve
0.5% threshold accuracy for VIT ≤ 3.3V. The reset
Open-Drain RESET Output
delay time can be set to 20ms by disconnecting the
Temperature Range: –40
°C to +125°C
CT pin, 300ms by connecting the CT pin to VDD using
Small SOT23 and 2mm
× 2mm QFN Packages
a resistor, or can be user-adjusted between 1.25ms
and 10s by connecting the CT pin to an external
capacitor. The TPS3808 has a very low typical
quiescent current of 2.4
µA so it is well-suited to
DSP or Microcontroller Applications
battery-powered applications. It is available in a
Notebook/Desktop Computers
small SOT23 and an ultra-small 2mm
× 2mm QFN
PDAs/Hand-Held Products
PowerPAD™ package and is fully specified over a
Portable/Battery-Powered Products
temperature range of –40
°C to +125°C (T
J).
FPGA/ASIC Applications
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.
PowerPAD is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2006, 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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