Datasheet

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

INPUT

GND

N/C

RESET

INPUT

RESET

REF

GND

INPUT

RESET

REF

GND

LM8365

www.ti.com

SNVS233B –MARCH 2003–REVISED APRIL 2013

LM8365 Micropower Undervoltage Sensing Circuits with Programmable Output Delay

Check for Samples: LM8365

FEATURES

DESCRIPTION

The LM8365 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.

• Complementary or Open Drain Output

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

• Programmable output delay by external

available with an active low, open drain or CMOS,

Capacitor (100ms typ with 0.1μF)

output. These devices feature a very low quiescent

current of 0.65µA typical. The LM8365 series features

• Input Voltage Range: 1V to 6V

a highly accurate voltage reference, a comparator

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

with precise thresholds and built-in hystersis to

• Pin for pin compatible with MC33465

prevent erratic reset operation, a time delayed output

which can be programmed by the system designer,

APPLICATIONS

and specified Reset operation down to 1.0V with

extremely low standby current.

• Low Battery Detection

These devices are available in the space saving 5-

• Microprocessor Reset Controller

Pin SOT-23 surface mount package. For additional

• Power Fail Indicator

undervoltage thresholds and output options, please

• Battery Backup Detection

contact Texas Instruments.

Functional Diagrams

Figure 1. CMOS Output Figure 2. Open Drain Output

Connection Diagram

Figure 3. 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 (15 pages)

PAGE 1
LM8365 www.ti.com SNVS233B – MARCH 2003 – REVISED APRIL 2013 LM8365 Micropower Undervoltage Sensing Circuits with Programmable Output Delay Check for Samples: LM8365 FEATURES DESCRIPTION • The LM8365 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.
PAGE 2
LM8365 SNVS233B – MARCH 2003 – REVISED APRIL 2013 www.ti.com PIN DESCRIPTION LM8365 B A L MF 22 BASE PART# RESET THRESHOLD: 22: 2.2V 27: 2.7V 30: 3.0V 45: 4.5V GRADE: A: 2% THRESHOLD ACCURACY B: 2.5% THRESHOLD ACCURACY PACKAGE TYPE: MF: SOT23-5 OUTPUT TYPE: OUTPUT LOGIC: L: ACTIVE LOW H: ACTIVE HIGH A: OPEN DRAIN C: CMOS These devices have limited built-in ESD protection.
PAGE 3
LM8365 www.ti.com SNVS233B – MARCH 2003 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS (continued) Unless otherwise specified, all limits specified for TA = 25°C. Symbol Parameter Conditions Min Typ Max 22 Suffix 0.066 0.110 0.154 27 Suffix 0.081 0.135 0.189 30 Suffix 0.090 0.150 0.210 45 Suffix 0.135 0.225 0.
PAGE 4
LM8365 SNVS233B – MARCH 2003 – REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CHARACTERISTICS Input Current vs. Input Voltage LM8365BALMF45 Reset Output Voltage vs. Input Voltage LM8365BALMF45 1.2 6 RL = 470k: TO 5V RL = 470k: TO VIN 5 RESET OUTPUT VOLTAGE (V) INPUT CURRENT (PA) 1.0 80°C 0.8 25°C 0.6 0.4 -30°C 4 3 2 -30°C 0.2 1 0.0 0 25°C 80°C 0 1 2 3 4 5 6 0 1 2 INPUT VOLTAGE (V) 5 INPUT VOLTAGE (V) Reset Output Sink Current vs.
PAGE 5
LM8365 www.ti.com SNVS233B – MARCH 2003 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS (continued) CD Delay Pin Threshold Voltage vs. Temperature LM8365BALMF27 CD Sink Current vs. CD Voltage 2.3 CD SINK CURRENT (mA) 10 CD DELAY IN THRESHOLD (V) 12 VIN = 2.5V 8 6 VIN = 2.0V 4 VIN = 1.5V 2 VIN = 2.97V 2.2 2.1 2.0 1.9 1.8 -50 0 0 0.5 1 1.5 2 2.5 3 -25 Figure 10. 50 75 100 Figure 11. Detector Threshold Voltage vs. Temperature LM8365BALMF45 Delay Resistance vs.
PAGE 6
LM8365 SNVS233B – MARCH 2003 – REVISED APRIL 2013 www.ti.com APPLICATION NOTES The propagation delay time for the LM8365 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 15 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.
PAGE 7
LM8365 www.ti.com SNVS233B – MARCH 2003 – REVISED APRIL 2013 INPUT VOLTAGE, PIN 2 VIN VDET+ VDET- VIN CAPACITOR, PIN 5 0.675 VIN VIN RESET OUTPUT (ACTIVE LOW), PIN 1 VDET0V tD2 Figure 16. Timing Waveforms Typical Applications VIN INPUT * 470k: VCC PP CD RESET RESET CD GND GND * REQUIRED FOR OPEN DRAIN OUTPUT Figure 17.
PAGE 8
LM8365 SNVS233B – MARCH 2003 – REVISED APRIL 2013 www.ti.com 3.17V 3.00V 2 VIN < 3.0V ON INPUT 5 TO ADDITIONAL CIRCUITRY CD RESET OUTPUT VIN > 3.15V ON 3 GND Figure 18. Battery Charge Indicator Using LM8365BCLMF30 VSUPPLY 5.0V 1.0V 0V 2 470k: INPUT 1 5 TO ADDITIONAL CIRCUITRY CD RESET OUTPUT 0.001PF CD 3 MISSING PULSE GND INPUT 0V VIN |0.675*VIN CD RESET OUTPUT tD2 Figure 19.
PAGE 9
LM8365 www.ti.com SNVS233B – MARCH 2003 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision A (April 2013) to Revision B • Page Changed layout of National Data Sheet to TI format ............................................................................................................
PAGE 10
PACKAGE OPTION ADDENDUM www.ti.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.com 7-Oct-2013 In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
PAGE 12
PACKAGE MATERIALS INFORMATION www.ti.com 23-Sep-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) W Pin1 (mm) Quadrant LM8365BALMF27/NOPB SOT-23 DBV 5 1000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM8365BALMFX27/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.0 Q3 LM8365BALMFX45/NOPB SOT-23 DBV 5 3000 178.0 8.4 3.2 3.2 1.4 4.0 8.
PAGE 13
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) LM8365BALMF27/NOPB SOT-23 DBV 5 1000 210.0 185.0 35.0 LM8365BALMFX27/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.0 LM8365BALMFX45/NOPB SOT-23 DBV 5 3000 210.0 185.0 35.
PAGE 14
PAGE 15
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.