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TPS3808G12DRVT Datasheet

  • TPS3808G12DRVT

  • Low Quiescent Current, Programmable-Delay Supervisory Circui...

  • 15頁

  • TI

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TPS3808
www.ti.com
SBVS050E 鈥?MAY 2004 鈥?REVISED OCTOBER 2005
Low Quiescent Current, Programmable-Delay
Supervisory Circuit
FEATURES
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Power-On Reset Generator with Adjustable
Delay Time: 1.25ms to 10s
Very Low Quiescent Current: 2.4碌A(chǔ) typ
High Threshold Accuracy: 0.5% typ
Fixed Threshold Voltages for Standard
Voltage Rails from 0.9V to 5V and Adjustable
Voltage Down to 0.4V Are Available
Manual Reset (MR) Input
Open-Drain RESET Output
Temperature Range: 鈥?0擄C to +125擄C
Small SOT23 and 2mm
脳
2mm QFN Packages
DESCRIPTION
The
TPS3808xxx
family
of
microprocessor
supervisory circuits monitor system voltages from
0.4V to 5.0V, 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 manual reset (MR) return above their thresholds.
The TPS3808 uses a precision reference to achieve
0.5% threshold accuracy for V
IT
鈮?/div>
3.3V. The reset
delay time can be set to 20ms by disconnecting the
C
T
pin, 300ms by connecting the C
T
pin to V
DD
using
a resistor, or can be user-adjusted between 1.25ms
and 10s by connecting the C
T
pin to an external
capacitor. The TPS3808 has a very low typical
quiescent current of 2.4碌A(chǔ) so it is well-suited to
battery-powered applications. It is available in a small
SOT23 and an ultra-small 2mm
脳
2mm QFN
PowerPAD鈩?package and is fully specified over a
temperature range of 鈥?0擄C to +125擄C (T
J
).
DBV PACKAGE
SOT23
(TOP VIEW)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
APPLICATIONS
DSP or Microcontroller Applications
Notebook/Desktop Computers
PDAs/Hand-Held Products
Portable/Battery-Powered Products
FPGA/ASIC Applications
1.2V
3.3V
RESET
SENSE
V
DD
SENSE V
DD
V
I/O
V
CORE
1
2
3
6
5
4
V
DD
SENSE
C
T
GND
MR
TPS3808G12
RESET
C
T
TPS3808G33
MR
C
T
DSP
RESET
GND
GPIO
GND
GND
DRV PACKAGE
2mm x 2mm QFN
(TOP VIEW)
Typical Application Circuit
V
DD
SENSE
C
T
1
2
3
Power
PAD
6
5
4
RESET
GND
MR
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 trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2004鈥?005, Texas Instruments Incorporated

TPS3808G12DRVT 產(chǎn)品屬性

  • LED General Illumination Solutions

  • 1

  • 集成電路 (IC)

  • PMIC - 監(jiān)控器

  • -

  • 簡單復(fù)位/加電復(fù)位

  • 1

  • 開路漏極或開路集電極

  • 低有效

  • 可調(diào)節(jié)/可選擇

  • 1.12V

  • -40°C ~ 125°C

  • 表面貼裝

  • 6-WDFN 裸露焊盤

  • 6-SON 裸露焊盤（2x2）

  • Digi-Reel®

  • 296-19294-6

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