Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - system monitor Reset/power-on reset SOT 23 6

FEATURES DESCRIPTION

APPLICATIONS

RESET

GND

SENSE

DRVPACKAGE

2mmx2mmQFN

(TOPVIEW)

Power

PAD

DBVPACKAGE

SOT23

(TOPVIEW)

SENSE

RESET

GND

1.2V 3.3V

TPS3808G12 TPS3808G33 DSP

SENSE V

SENSE

I/O

CORE

GPIO

GNDGNDGND

RESET MR

RESET

TypicalApplicationCircuit

TPS3808

www.ti.com

.......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008

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 µ A typ

when the SENSE voltage drops below a preset

• High Threshold Accuracy: 0.5% typ

threshold or when the manual reset ( MR) pin drops to

• Fixed Threshold Voltages for Standard Voltage

a logic low. The RESET output remains low for the

Rails from 0.9V to 5V and Adjustable Voltage

user-adjustable delay time after the SENSE voltage

Down to 0.4V Are Available

and manual reset ( MR) return above the respective

thresholds.

• Manual Reset ( MR) Input

The TPS3808 uses a precision reference to achieve

• Open-Drain RESET Output

0.5% threshold accuracy for V

≤ 3.3V. The reset

• Temperature Range: – 40 ° C to +125 ° C

delay time can be set to 20ms by disconnecting the

• Small SOT23 and 2mm × 2mm QFN Packages

pin, 300ms by connecting the C

pin to V

using

a resistor, or can be user-adjusted between 1.25ms

and 10s by connecting the C

pin to an external

capacitor. The TPS3808 has a very low typical

• DSP or Microcontroller Applications

quiescent current of 2.4 µ A so it is well-suited to

• Notebook/Desktop Computers

battery-powered applications. It is available in a small

• PDAs/Hand-Held Products

SOT23 and an ultra-small 2mm × 2mm QFN

• Portable/Battery-Powered Products

PowerPAD™ package, and is fully specified over a

• FPGA/ASIC Applications

temperature range of – 40 ° C to +125 ° C (T

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.

2 PowerPAD is a trademark of Texas Instruments.

3 All other 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.

Summary of content (24 pages)

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TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 Low Quiescent Current, Programmable-Delay Supervisory Circuit FEATURES DESCRIPTION 1 • Power-On Reset Generator with Adjustable Delay Time: 1.25ms to 10s • Very Low Quiescent Current: 2.4µA typ • High Threshold Accuracy: 0.5% typ • Fixed Threshold Voltages for Standard Voltage Rails from 0.
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TPS3808 SBVS050J – MAY 2004 – REVISED AUGUST 2008 .......................................................................................................................................................... www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
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TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 ELECTRICAL CHARACTERISTICS 1.7V ≤ VDD ≤ 6.5V, RLRESET = 100kΩ, CLRESET = 50pF, over operating temperature range (TJ = –40°C to +125°C), unless otherwise noted. Typical values are at TJ = +25°C.
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TPS3808 SBVS050J – MAY 2004 – REVISED AUGUST 2008 .......................................................................................................................................................... www.ti.com FUNCTIONAL BLOCK DIAGRAMS VDD VDD VDD TPS3808G01 Adjustable Voltage VDD 90k 90k RESET MR SENSE Reset Logic Timer Reset Logic Timer R1 − − SENSE RESET MR CT + CT + R2 0.4V VREF 0.4V VREF R1 + R2 = 4MΩ GND GND Adjustable Voltage Version Fixed Voltage Version Figure 1.
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TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 TIMING DIAGRAM VDD 0.8V 0.0V RESET tD = Reset Delay tD tD tD = Undefined State SENSE VIT + VHYS VIT MR 0.7VDD 0.3VDD Time Figure 2.
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TPS3808 SBVS050J – MAY 2004 – REVISED AUGUST 2008 .......................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS At TJ = +25°C, VDD = 3.3V, RLRESET = 100kΩ, and CLRESET = 50pF, unless otherwise noted. SUPPLY CURRENT vs SUPPLY VOLTAGE RESET TIMEOUT PERIOD vs CT 4.0 100 3.5 IDD (µA) RESET Timeout (sec) +125_ C 3.0 +85_ C 2.5 2.0 +25_C 1.5 1.0 10 −40°C, +25°C, +125°C 1 0.
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TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 TYPICAL CHARACTERISTICS (continued) At TJ = +25°C, VDD = 3.3V, RLRESET = 100kΩ, and CLRESET = 50pF, unless otherwise noted. LOW-LEVEL RESET VOLTAGE vs RESET CURRENT VOL Low−Level RESET Voltage (V) 0.8 0.7 0.6 0.5 0.4 VDD = 3.3V 0.3 0.2 0.1 VDD = 6.5V 0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.
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TPS3808 SBVS050J – MAY 2004 – REVISED AUGUST 2008 .......................................................................................................................................................... www.ti.com DEVICE OPERATION The TPS3808 microprocessor supervisory product family is designed to assert a RESET signal when either the SENSE pin voltage drops below VIT or the manual reset (MR) is driven low.
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TPS3808 www.ti.com .......................................................................................................................................................... SBVS050J – MAY 2004 – REVISED AUGUST 2008 1.2V by the choice of resistor. Figure 14b shows a fixed 20ms delay time by leaving the CT pin open. Figure 14c shows a ground referenced capacitor connected to CT for a user-defined program time between 1.25ms and 10s. 3.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 10-Jun-2014 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Nov-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ TPS3808G01DBVR SOT-23 3000 178.0 9.0 DBV 6 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.23 3.17 1.37 4.0 8.0 Q3 TPS3808G01DBVT SOT-23 DBV 6 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3 TPS3808G01DRVR SON DRV 6 3000 180.0 8.4 2.25 2.25 1.0 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Nov-2013 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS3808G15DRVR SON DRV 6 3000 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS3808G15DRVT SON DRV 6 250 179.0 8.4 2.2 2.2 1.2 4.0 8.0 Q2 TPS3808G18DBVR SOT-23 DBV 6 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3 TPS3808G18DBVT SOT-23 DBV 6 250 178.0 9.0 3.23 3.17 1.37 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Nov-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS3808G01DBVR SOT-23 DBV 6 3000 180.0 180.0 18.0 TPS3808G01DBVT SOT-23 DBV 6 250 180.0 180.0 18.0 TPS3808G01DRVR SON DRV 6 3000 205.0 200.0 33.0 TPS3808G01DRVR SON DRV 6 3000 203.0 203.0 35.0 TPS3808G01DRVT SON DRV 6 250 205.0 200.0 33.0 TPS3808G01DRVT SON DRV 6 250 203.0 203.0 35.
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PACKAGE MATERIALS INFORMATION www.ti.com 28-Nov-2013 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS3808G18DBVR SOT-23 DBV 6 3000 180.0 180.0 18.0 TPS3808G18DBVT SOT-23 DBV 6 250 180.0 180.0 18.0 TPS3808G18DRVR SON DRV 6 3000 203.0 203.0 35.0 TPS3808G18DRVT SON DRV 6 250 203.0 203.0 35.0 TPS3808G19DBVR SOT-23 DBV 6 3000 180.0 180.0 18.0 TPS3808G19DBVT SOT-23 DBV 6 250 180.0 180.0 18.
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