Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - system monitor Reset/power-on reset SOT 23 5

RESET

WDI

100 nF

GND

TPS3823-33

RESET

I/O

GND

MSP430C325

3.3 V

TPS3820, TPS3823, TPS3828: DBV PACKAGE

TPS3820A, TPS3823A, TPS3828A: DBV PACKAGE

(TOP VIEW)

RESET

GND

WDI

TPS3825 and TPS3825A: DBV PACKAGE

(TOP VIEW)

RESET

GND

RESET

TPS3824 and TPS3824A: DBV PACKAGE

(TOP VIEW)

RESET

GND

RESET

WDI

TPS382x-xx

TPS382xA-xx

www.ti.com

SLVS165J –APRIL 1998–REVISED APRIL 2013

Processor Supervisory Circuits

Check for Samples: TPS382x-xx, TPS382xA-xx

FEATURES

• Power-On Reset Generator With Fixed Delay

Time of 200 ms (TPS3823/4/5/8) or 25 ms

(TPS3820)

• Manual Reset Input (TPS3820/3/5/8)

• Reset Output Available in Active-Low

(TPS3820/3/4/5), Active-High (TPS3824/5) and

Open-Drain (TPS3828)

• Supply Voltage Supervision Range:

2.5 V, 3 V, 3.3 V, 5 V

• Watchdog Timer (TPS3820/3/4/8)

• Supply Current of 15 μA (Typ)

• SOT23-5 Package

• Temperature Range: −40°C to 85°C

APPLICATIONS

• Applications Using DSPs, Microcontrollers, or

Microprocessors

• Industrial Equipment

• Programmable Controls

• Automotive Systems

• Portable/Battery-Powered Equipment

• Intelligent Instruments

• Wireless Communications Systems

• Notebook/Desktop Computers

TYPICAL APPLICATION

DESCRIPTION

The TPS382x family of supervisors provide circuit

initialization and timing supervision, primarily for DSP

and processor-based systems. During power-on,

RESET asserts when the supply voltage V

becomes higher than 1.1 V. Thereafter, the supply

voltage supervisor monitors V

and keeps RESET

active as long as V

remains below the threshold

voltage, V

IT−

. An internal timer delays the return of

the output to the inactive state (high) to ensure proper

system reset. The delay time, t

, starts after V

has

risen above the threshold voltage, V

IT−

. When the

supply voltage drops below the threshold voltage

IT−

, the output becomes active (low) again. No

external components are required. All the devices of

this family have a fixed-sense threshold voltage, V

IT–

set by an internal voltage divider.

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.

2All trademarks are the property of their respective owners.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (20 pages)

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TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 Processor Supervisory Circuits Check for Samples: TPS382x-xx, TPS382xA-xx FEATURES 1 • 2 • • • • • • • Power-On Reset Generator With Fixed Delay Time of 200 ms (TPS3823/4/5/8) or 25 ms (TPS3820) Manual Reset Input (TPS3820/3/5/8) Reset Output Available in Active-Low (TPS3820/3/4/5), Active-High (TPS3824/5) and Open-Drain (TPS3828) Supply Voltage Supervision Range: 2.5 V, 3 V, 3.
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TPS382x-xx TPS382xA-xx SLVS165J – APRIL 1998 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. DESCRIPTION (CONTINUED) The TPS3820/3/5/8 devices incorporate a manual reset input, MR. A low level at MR causes RESET to become active. The TPS3824/5 devices include a high-level output RESET.
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TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 FUNCTION/TRUTH TABLE INPUTS (1) (2) OUTPUTS VDD > VIT RESET RESET (2) L 0 L H L 1 L H H 0 L H H 1 H L MR (1) TPS3820/3/5/8 TPS3824/5 FUNCTIONAL BLOCK DIAGRAM VDD + _ 52 kΩ RESET(1) RESET Logic RESET VREF MR(2) Auto−Reset Oscillator 40 kΩ Transition Detector WDI (1) TPS3824/5 (2) TPS3820/3/5/8 Watchdog Timer Logic TIMING DIAGRAM VDD VIT 1.
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TPS382x-xx TPS382xA-xx SLVS165J – APRIL 1998 – REVISED APRIL 2013 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) (2) over operating free-air temperature range (unless otherwise noted) VDD VALUE UNIT 6V V Supply voltage RESET, RESET, MR, WDI −0.3 to (VDD + 0.
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TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS over operating free-air temperature range (unless otherwise noted) PARAMETER RESET VOH High-level output voltage RESET TEST CONDITIONS TPS382x-25 VDD = VIT− + 0.2 V, IOH = −20 μA TPS382x-30 TPS382x-33 TPS382xA-33 VDD = VIT− + 0.2 V, IOH = −30 μA TPS382x-50 VDD = VIT− + 0.2 V IOH = −120 μA TPS3824-25 TPS3825-25 VDD ≥ 1.8 V, IOH = −100 μA MIN MAX 0.8 × VDD UNIT V VDD − 1.
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TPS382x-xx TPS382xA-xx SLVS165J – APRIL 1998 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TPS382x-25 TPS382x-30 IOS Output short-circuit current (3) RESET TPS382x-33 TPS382xA-33 –400 VDD = VIT, max + 0.
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TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE 19 MR = Open WDI = Open TA = 25°C 1.001 17 15 1 I DD− Supply Current − µ A Normalized Input Threshold Voltage −V IT (TA), VIT (25°C) NORMALIZED INPUT THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE AT VDD 0.999 0.998 0.997 13 TPS382x-33 11 9 7 5 3 0.996 1 0.995 −40 −15 10 60 35 −1 −0.5 85 0.5 1.5 TA − Free-Air Temperature − °C Figure 2. 6.
PAGE 8
TPS382x-xx TPS382xA-xx SLVS165J – APRIL 1998 – REVISED APRIL 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 6 VDD = 3.2 V WDI = Open MR = Open 3 VOH − High-Level Output Voltage − V VOH − High-Level Output Voltage − V 3.5 2.5 −40°C 2 1.5 85°C 1 0.5 0 VDD = 5.
PAGE 9
TPS382x-xx TPS382xA-xx www.ti.com SLVS165J – APRIL 1998 – REVISED APRIL 2013 REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision I (February 2013) to Revision J Page • Added TPS382xA-33 to second RESET row of VOH parameter in Electrical Characteristics table ...................................... 5 • Added TPS382xA-33 to third RESET row of VOL parameter in Electrical Characteristics table ...............................
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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 26-Nov-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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PACKAGE MATERIALS INFORMATION www.ti.com 2-May-2014 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) TPS3820-33DBVR SOT-23 DBV 5 3000 178.0 9.0 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.3 3.2 1.4 4.0 8.0 Q3 TPS3820-33DBVT SOT-23 DBV 5 250 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3 TPS3820-50DBVR SOT-23 DBV 5 3000 179.0 8.4 3.2 3.2 1.4 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 2-May-2014 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS3824-25DBVR SOT-23 DBV 5 3000 179.0 8.4 TPS3824-25DBVT SOT-23 DBV 5 250 179.0 8.4 TPS3824-30DBVR SOT-23 DBV 5 3000 179.0 TPS3824-30DBVT SOT-23 DBV 5 250 179.0 TPS3824-33DBVR SOT-23 DBV 5 3000 W Pin1 (mm) Quadrant 3.2 3.2 1.4 4.0 8.0 Q3 3.2 3.2 1.4 4.0 8.0 Q3 8.4 3.2 3.2 1.4 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 2-May-2014 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS3820-33DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0 TPS3820-33DBVT SOT-23 DBV 5 250 180.0 180.0 18.0 TPS3820-50DBVR SOT-23 DBV 5 3000 203.0 203.0 35.0 TPS3820-50DBVR SOT-23 DBV 5 3000 180.0 180.0 18.0 TPS3820-50DBVT SOT-23 DBV 5 250 180.0 180.0 18.0 TPS3820-50DBVT SOT-23 DBV 5 250 203.0 203.0 35.
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