Datasheet

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

DBV PACKAGE

(TOP VIEW)

TPS3123/T

PS3128

RESET

GND

WDI

TPS3124

RESET

GND

RESET

WDI

TPS3125/

TPS3126

RESET

GND

RESET

GND

RESET

TPS3123J12

RESET

GND

1.2 V

TMS320UVC5402

WDI

TPS3123-xx

TPS3124-xx, TPS3125-xx

TPS3126-xx, TPS3128-xx

www.ti.com

SLVS227E –AUGUST 1999– REVISED AUGUST 2011

ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS

Check for Samples: TPS3123-xx, TPS3124-xx, TPS3125-xx, TPS3126-xx, TPS3128-xx

FEATURES

• Minimum Supply Voltage of 0.75 V

• Supply Voltage Supervision Range:

– 1.2 V, 1.5 V, 1.8 V (TPS312x)

– 3 V (TPS3125 Devices Only)

– Other Versions on Request

• Power-On Reset Generator With Fixed Delay

Time of 180 ms

• Manual Reset Input (TPS3123/5/6/8)

• Watchdog Timer Retriggers the RESET Output

at V

≥ V

• Supply Current of 14 μA (Typ)

• Small SOT23-5 Package

• Temperature Range of –40°C to +85°C

• Reset Output Available in Push-Pull (Active

Low and High) and Open-Drain (Active-Low)

APPLICATIONS

• Applications Using Low Voltage DSPs,

Microcontrollers, or Microprocessors

• Portable/Battery-Powered Equipment

• Wireless Communication Systems

• Programmable Controls

• Industrial Equipment

• Notebook/Desktop Computers

• Intelligent Instruments

Figure 1. Typical Low-Voltage DSP Application

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.

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 (22 pages)

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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS Check for Samples: TPS3123-xx, TPS3124-xx, TPS3125-xx, TPS3126-xx, TPS3128-xx FEATURES 1 • • 2 • • • • • • • DBV PACKAGE (TOP VIEW) Minimum Supply Voltage of 0.75 V Supply Voltage Supervision Range: – 1.2 V, 1.5 V, 1.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com DESCRIPTION The TPS312x family of ultralow voltage processor supervisory circuits provides circuit initialization and timing supervision, primarily for DSP and processor-based systems. During power-on, RESET is asserted when the supply voltage (VDD) becomes higher than 0.75 V.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com TPS312 3 J 12 DBV R Reel Package Nominal Supply Voltage Typical Reset Threshold Voltage Functionality Family Table 2. Ordering Information Application Specific Versions (1) DEVICE NAME NOMINAL SUPPLY VOLTAGE, VNOM DEVICE NAME TYPICAL RESET THRESHOLD VOLTAGE–VIT– TPS312xx12DBV 1.2 V TPS312xAxxDBV VNOM –1% TPS312xx15DBV 1.5 V TPS312xBxxDBV VNOM –2% TPS312xx18DBV 1.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com Figure 2. FUNCTIONAL BLOCK DIAGRAM VDD Device Power Supply R1 MR (1) R2 RESET Reset Logic and Timer R3 (3) RESET GND Reference Voltage WD Watchdog Logic and Timer Transition Detector (2) NOTES: (1) TPS3123/5/6/8 (2) TPS3123/4/8 (3) TPS3124/5/6 Figure 3. TIMING DIAGRAM TPS3123/5/6/8 A B C D E F G VDD VIT <0.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com Figure 4. TIMING DIAGRAM TPS3123/4//8 A B VDD VIT <0.85 V t G MR (TPS3123) t C D E F J H WDI * * * * * t td td td td td RESET ttout ttout ttout t Output Undefined * = WDI Disabled ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) UNIT Manual reset, MR –0.3 V to VDD + 0.6 V RESET –0.3 V to VDD + 0.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS at specified temperature range. MIN MAX TA = 0°C to +85°C 0.75 3.3 TA = –40°C to +85°C 0.85 3.3 UNIT VDD Supply voltage V VDD Manual reset voltage 0.0 VDD +0.3 V VWD1 Watchdog input voltage 0 VDD +0.3 V VIH High-level input voltage 0.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com TIMING REQUIREMENTS at RL = 1 MΩ, CL = 50 pF, TA = +25°C. PARAMETER TEST CONDITIONS At VDD tw Pulse width At MR At WDI VIH = VIT– + 0.2 V, VIL = VIT – –0.2 V VDD ≥ VIT– + 0.2 V, VIL = 0.3 x VDD, MIN TYP MAX UNIT 6 VIH = 0.7 × VDD μs 1 0.1 SWITCHING CHARACTERISTICS at RL = 1 MΩ, CL = 50 pF, TA = +25°C. PARAMETER TEST CONDITIONS ttout Watchdog time out VDD ≥ VIT– + 0.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 750 25 VOL − Low-Level Output Voltage − mV TA = 25°C I CC − Supply Current − µ A TPS3123J12 20 15 10 0 1 2 VDD − Supply Voltage − V 3 500 TA = 25°C TA = 0°C 250 0 3.3 200 50 100 150 IOL − Low-Level Output Current − µA Figure 5. Figure 6.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 1.6 3.3 TPS3125L30 VDD = 3.3 V MR = Open 2.75 TA = 85°C 2.5 TA = 25°C TA = 0°C 2.25 TA = − 40°C 2 TPS3123J12 VDD = 1.5 V MR = Open 1.4 VOH − High-Level Output Voltage − V VOL − Low-Level Output Voltage − V 3 1.75 1.5 1.25 1 0.75 0.5 1.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) MINIMUM PULSE DURATION vs THRESHOLD OVERDRIVE 4.5 1.005 TPS312xL30 4 1.004 t w− Minimum Pulse Duration − µ s Normalized Input Threshold Voltage − V IT(T A)/ V IT (25 °C ) NORMALIZED INPUT THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE 1.003 1.002 1.001 1 0.999 0.998 −40 TPS312xL30 MR = Open VIT = 2.64 V TA = 25°C 3.5 3 2.5 2 1.5 1 0.
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TPS3123-xx TPS3124-xx, TPS3125-xx TPS3126-xx, TPS3128-xx SLVS227E – AUGUST 1999 – REVISED AUGUST 2011 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (December, 2006) to Revision E • Page Removed TPS3128E12DBVR from list of orderable devices in Table 1 ..............................................................................
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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 18-Oct-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 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS3123G15DBVR SOT-23 DBV 5 3000 180.0 9.0 TPS3123J12DBVR SOT-23 DBV 5 3000 180.0 TPS3123J12DBVT SOT-23 DBV 5 250 180.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) TPS3126E12DBVR SOT-23 DBV 5 3000 180.0 9.0 TPS3126E12DBVT SOT-23 DBV 5 250 180.0 9.0 TPS3126E15DBVR SOT-23 DBV 5 3000 180.0 TPS3126E15DBVT SOT-23 DBV 5 250 180.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS3124J12DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS3124J12DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS3124J18DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS3124J18DBVT SOT-23 DBV 5 250 182.0 182.0 20.0 TPS3125G15DBVR SOT-23 DBV 5 3000 182.0 182.0 20.0 TPS3125G15DBVT SOT-23 DBV 5 250 182.0 182.0 20.
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