Datasheet

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

INPUT

REF

RESET

GND

INPUT

GND

N/C

RESET

LM8364

www.ti.com

SNVS232B –MARCH 2003–REVISED APRIL 2013

LM8364 Micropower Undervoltage Sensing Circuits

Check for Samples: LM8364

FEATURES

DESCRIPTION

The LM8364 series are micropower undervoltage

• Extremely Low Quiescent Current: 0.65μA, at

sensing circuits that are ideal for use in battery

= 2.87V

powered microprocessor based systems, where

• High Accuracy Threshold Voltage (±2.5%)

extended battery life is a key requirement.

• Open Drain Output

A range of threshold voltages from 2.0V to 4.5V are

• Input Voltage Range: 1V to 6V

available with an active low open drain output. These

devices feature a very low quiescent current of

• Surface Mount Package (5-Pin SOT-23)

0.65µA typical. The LM8364 series features a highly

• Pin for Pin Compatible with MC33464

accurate voltage reference, a comparator with precise

thresholds and built-in hysterisis to prevent erratic

APPLICATIONS

reset operation, and ensured Reset operation down

• Low Battery Detection to 1.0V with extremely low standby current.

• Microprocessor Reset Controller

These devices are available in the space saving

SOT-23 5-pin surface mount package. For other

• Power Fail Indicator

undervoltage thresholds and output options, please

• Battery Backup Detection

contact Texas Instruments.

Functional Block Diagram Connection Diagram

Figure 1. 5-Pin SOT-23

Top View

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 (14 pages)

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LM8364 www.ti.com SNVS232B – MARCH 2003 – REVISED APRIL 2013 LM8364 Micropower Undervoltage Sensing Circuits Check for Samples: LM8364 FEATURES DESCRIPTION • The LM8364 series are micropower undervoltage sensing circuits that are ideal for use in battery powered microprocessor based systems, where extended battery life is a key requirement. 1 2 • • • • • Extremely Low Quiescent Current: 0.65μA, at VIN = 2.87V High Accuracy Threshold Voltage (±2.
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LM8364 SNVS232B – MARCH 2003 – 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. Absolute Maximum Ratings (1) (2) Supply Voltage −0.3V to 6.5V RESET Output Voltage −0.3V to 6.5V RESET Output Current 70mA −65°C to 150°C Storage Temperature Range Mounting Temp.
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LM8364 www.ti.com SNVS232B – MARCH 2003 – REVISED APRIL 2013 Electrical Characteristics (continued) Unless otherwise specified, all limits ensured for TA = 25°C. Symbol IIN Parameter Quiescent Input Current Conditions Min Typ Max VIN = 1.9V 0.55 0.8 VIN = 4.0V 0.70 1.3 VIN = 2.6V 0.62 0.9 VIN = 4.7V 0.75 1.3 VIN = 2.87V 0.65 0.9 VIN = 5.0V 0.77 1.3 VIN = 3.08V 0.66 0.9 VIN = 5.20V 0.79 1.3 VIN = 4.34V 0.70 1.0 VIN = 6.0 0.85 1.
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LM8364 SNVS232B – MARCH 2003 – REVISED APRIL 2013 www.ti.com Typical Performance Characteristics Input Current vs. Input Voltage LM8364BALMF45 Reset Output Voltage vs. Input Voltage LM8364BALMF45 6 1.0 RL = 470k: TO VIN 0.9 80°C 0.7 25°C 0.6 0.5 0.4 -30°C 0.3 0.2 0.1 5 RESET OUTUT VOTLAGE (V) INPUT CURRENT (PA) 0.8 4 3 2 1 RL = 470k: to 5V 0 0.0 0 1 2 3 4 5 1 0 6 2 4 5 6 Figure 2. Figure 3. Reset Output Sink Current vs. Input Voltage LM8364BALMF45 Reset Output Sink Current vs.
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LM8364 www.ti.com SNVS232B – MARCH 2003 – REVISED APRIL 2013 APPLICATION NOTES The propagation delay time for the LM8364 is measured using a 470kΩ pull-up resistor connected to from the RESET output pin to 5V in addition to a 10pF capacitive load connected from the same pin to GND. Figure 7 shows the timing diagram for the measurement for the propagation delay. VDET+ is equal to the sum of the detector threshold, VDET−, and the built in hysteresis, VHYS. VDET+ +2 INPUT VOLTAGE, PIN 2 1V 0V 5V 2.
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LM8364 SNVS232B – MARCH 2003 – REVISED APRIL 2013 www.ti.com Typical Applications VIN VSUPPLY 5.0V INPUT VCC 470k: 2 INPUT PP RESET RESET VDET- = 4.5V 1 RESET OUTPUT GND GND 3 GND 2 INPUT 3.3V 1 VDET- = 3.0V RESET OUTPUT 3 Figure 9. Microprocessor Reset Circuit GND Figure 10. Dual Power Supply Undervoltage Supervision VSUPPLY VDD RSENSE INPUT 2 470k: 1 MICROCONTROLLER VDET- = 2.0V RESET OUTPUT GND 3 GND THIS CIRCUIT MONITORS THE CURRENT AT THE LOAD.
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LM8364 www.ti.com SNVS232B – MARCH 2003 – REVISED APRIL 2013 VSUPPLY 2 INPUT VDET- = 4.5V RESET OUTPUT 3 GND 2 INPUT VDET- = 3.0V RESET OUTPUT 3 GND 2 INPUT VIN = 1.0V TO 6V VDET- = 2.0V RESET OUTPUT 3 GND EACH LED WILL SEQUENTIALLY TURN ON WHEN THE RESPECTIVE VOLTAGE DETECTOR THRESHOLD (VDET- +VHYS) IS EXCEEDED. Figure 12.
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LM8364 SNVS232B – MARCH 2003 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision A (April 2013) to Revision B • 8 Page Changed layout of National Data Sheet to TI format ............................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ SOT-23 DBV 5 1000 178.0 8.4 LM8364BALMF20/NOPB SOT-23 DBV 5 1000 178.0 LM8364BALMFX20/NOPB SOT-23 DBV 5 3000 178.0 LM8364BALMF20 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) 3.2 3.2 1.4 4.0 8.0 Q3 8.4 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 23-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LM8364BALMF20 SOT-23 DBV 5 1000 210.0 185.0 35.0 LM8364BALMF20/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM8364BALMFX20/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.
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