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GND

CPU

FLASH MEMORY

470 k:

LMS33460

RESET

OUT

LMS33460

www.ti.com

SNVS158D –MARCH 2001–REVISED APRIL 2013

LMS33460 3V Under Voltage Detector

Check for Samples: LMS33460

FEATURES

DESCRIPTION

The LMS33460 is an under voltage detector with a

• Ultra Low Power

3.0V threshold and extremely low power

• 3.0V Detection

consumption. The LMS33460 is specifically designed

• V

Range: 0.8V to 7.0V

to accurately monitor power supplies. It is especially

suited to battery powered systems where low

• Open Drain Output

quiescent current and small size are required. This IC

• Ultra-small SC70-5 Package

generates an active output whenever the input

• Extended Temperature Range (−40°C to 85°C)

voltage drops below 3.0 Volts.

• Ultra Low Quiescent Current (1µA typ)

This part uses a precision on-chip voltage reference

and a comparator to measure the input voltage. Built

APPLICATIONS

in hysteresis helps to prevent erratic operation in the

presence of noise. The UVD is available in the ultra-

• Low Battery Voltage Detector

miniature SC70-5 package.

• Power Fail Indicator

• Processor Reset Generator

• Battery Backup Control

• Battery Operated Equipment

• Hand-held Instruments

Typical 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 (12 pages)

PAGE 1
LMS33460 www.ti.com SNVS158D – MARCH 2001 – REVISED APRIL 2013 LMS33460 3V Under Voltage Detector Check for Samples: LMS33460 FEATURES DESCRIPTION • • • • • • • The LMS33460 is an under voltage detector with a 3.0V threshold and extremely low power consumption. The LMS33460 is specifically designed to accurately monitor power supplies. It is especially suited to battery powered systems where low quiescent current and small size are required.
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LMS33460 SNVS158D – MARCH 2001 – REVISED APRIL 2013 www.ti.com Connection Diagram 1 * 2 GND 3 5 VIN 4 VOUT C33 N/C * Pin 2 is internally connected to Pin 3 (GND). Pin 2 should be left open or connected to ground. Figure 1.
PAGE 3
LMS33460 www.ti.com SNVS158D – MARCH 2001 – REVISED APRIL 2013 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) Input Voltage to GND 8.0V Output Voltage to GND 8.
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LMS33460 SNVS158D – MARCH 2001 – REVISED APRIL 2013 www.ti.com TYPICAL CHARACTERISTICS (TA = 25°C, RL = 470 kΩ and CL = 10 pF unless otherwise noted). Detector Threshold vs. Temperature Supply Current vs. Input Voltage 100 3.25 (VIN RISING) SUPPLY CURRENT (µA) DETECTOR THRESHOLD (V) 3.30 3.20 3.15 3.10 VHYS VDET (VIN FALLING) 10 1 3.05 3.00 -50 0.1 -25 0 25 50 75 100 0 2 TEMPERATURE (°C) 4 6 8 10 INPUT VOLTAGE VIN (V) Figure 2. Figure 3. Propagation Delay Time (tPDHL) vs.
PAGE 5
LMS33460 www.ti.com SNVS158D – MARCH 2001 – REVISED APRIL 2013 APPLICATION CIRCUIT INFORMATION The LMS33460 is a micro power under voltage sensing circuit with an open drain output configuration, which requires a pull resistor. The LMS33460 features a voltage reference, a comparator with precise thresholds and built in hysteresis to prevent erratic reset operation. INPUT VOLTAGE 5.0V VHYS VIN Rising Threshold VIN Falling Threshold VDET VIN(MIN) 0V TIME OUTPUT VOLTAGE 5.0V tPDHL 2.5V tPDLH 0.
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LMS33460 SNVS158D – MARCH 2001 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision C (April 2013) to Revision D • 6 Page Changed layout of National Data Sheet to TI format ............................................................................................................
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-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 9
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-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 LMS33460MG SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.0 Q3 LMS33460MG/NOPB SC70 DCK 5 1000 178.0 8.4 2.25 2.45 1.2 4.0 8.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 8-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) LMS33460MG SC70 DCK 5 1000 210.0 185.0 35.0 LMS33460MG/NOPB SC70 DCK 5 1000 210.0 185.0 35.
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