参数资料
型号: TPS3808G01QDRVRQ1
厂商: TEXAS INSTRUMENTS INC
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6
封装: GREEN, PLASTIC, SON-6
文件页数: 1/20页
文件大小: 659K
代理商: TPS3808G01QDRVRQ1
RESET
GND
MR
1
2
3
6
5
4
DBV (SOT-23) PACKAGE
(TOP VIEW)
1.2 V
3.3 V
TPS3808G12
TPS3808G33
DSP
SENSE
V
DD
V
DD
SENSE
V
I/O
V
CORE
GPIO
GND
RESET
MR
C
T
C
T
RESET
GND
MR
6
5
4
V
DD
SENSE
C
T
1
2
3
DRV PACKAGE
(TOP VIEW)
C
T
SENSE
V
DD
www.ti.com
SBVS085G – JANUARY 2007 – REVISED DECEMBER 2010
LOW-QUIESCENT-CURRENT PROGRAMMABLE-DELAY SUPERVISORY CIRCUIT
Check for Samples: TPS3808-Q1
1
FEATURES
DESCRIPTION
Qualified for Automotive Applications
Power-On Reset Generator With Adjustable
The TPS3808 microprocessor supervisory circuits
monitor system voltages from 0.4 V to 5 V, asserting
Delay Time: 1.25 ms to 10 s
an open-drain RESET signal when the SENSE
Very Low Quiescent Current: 2.4 mA Typ
voltage drops below a preset threshold or when the
High Threshold Accuracy: 0.5% Typ
manual reset (MR) pin drops to a logic low. The
Fixed Threshold Voltages for Standard Voltage
RESET output remains low for the user-adjustable
delay time after the SENSE voltage and MR return
Rails From 1.2 V to 5 V and Adjustable Voltage
above their thresholds.
Down to 0.4 V Are Available
Manual Reset (MR) Input
The TPS3808 uses a precision reference to achieve
0.5% threshold accuracy for VIT ≤ 3.3 V. The reset
Open-Drain RESET Output
delay time can be set to 20 ms by disconnecting the
Temperature Range: –40°C to 125°C
CT pin, 300 ms by connecting the CT pin to VDD using
Small SOT-23 Package
a resistor, or can be user adjusted between 1.25 ms
and 10 s by connecting the CT pin to an external
capacitor. The TPS3808 has a very low typical
APPLICATIONS
quiescent current of 2.4 mA, so it is well suited to
DSP or Microcontroller Applications
battery-powered applications. It is available in a small
Notebook/Desktop Computers
SOT-23 package and is fully specified over a
PDAs/Hand-Held Products
temperature range of –40°C to 125°C (TJ).
Portable/Battery-Powered Products
<br/>
FPGA/ASIC Applications
<br/>
1
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.
PRODUCTION DATA information is current as of publication date.
Copyright 2007–2010, 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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