LM809 NSC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 8

Technical content

Features

n Precise monitoring of 3V, 3.3V, and 5V supply voltages n Superior upgrade to MAX809/810 n Fully specified over temperature n 140ms min. Power-On Reset pulse width, 240ms typical Active-low RESET Output (LM809) Active-high RESET Output (LM810) n Guaranteed RESET Output valid for V CC≥1V n Low Supply Current, 15µA typ. n Power supply transient immunity

Applications

n Portable/Battery-Powered Equipment n Automotive Typical Application Circuit 10105701 Connection Diagrams 10105702 ( ) are for LM810 10105715 Top View See NS package Number LDB06A ( ) are for LM810 September 2002 LM809/LM810 3-Pin Microprocessor Reset Circuits © 2002 National Semiconductor Corporation DS101057 www.national.com

Ordering Information

(V) LM809 Supplied as 1000 units, tape & reel LM809 Supplied as 3000 units, tape & reel Package Top Mark Package Type NSC Package 4.63 LM809M3-4.63 LM809M3X-4.63 S8B SOT23-3 M03B 4.38 LM809M3-4.38 LM809M3X-4.38 S7B 4.00 LM809M3-4.00 LM809M3X-4.00 S6B 3.08 LM809M3-3.08 LM809M3X-3.08 S5B 2.93 LM809M3-2.93 LM809M3X-2.93 S4B 2.63 LM809M3-2.63 LM809M3X-2.63 S3B 2.45 LM809M3-2.45 LM809M3X-2.45 SFB Reset Threshold (V) LM810 Supplied as 1000 units, tape & reel LM810 Supplied as 3000 units, tape & reel Package Top Mark Package Type NSC Package 4.63 LM810M3-4.63 LM810M3X-4.63 SEB SOT23-3 M03B 4.38 LM810M3-4.38 LM810M3X-4.38 SDB 4.00 LM810M3-4.00 LM810M3X-4.00 SCB 3.08 LM810M3-3.08 LM810M3X-3.08 SBB 2.93 LM810M3-2.93 LM810M3X-2.93 SAB 2.63 LM810M3-2.63 LM810M3X-2.63 S9B Reset Threshold (V) LM809 Supplied as 1000 units, tape & reel LM809 Supplied as 4500 units, tape & reel Package Top Mark Package Type NSC Package 2.63 LM809LD-2.63 LM809LDX-2.63 S13 LLP-6 LDB06A Custom voltages and improved accuracies are available, subject to minimum orders. Contact your local National Semiconductor Sales Office for infor mation. Pin Descriptions PIN NAME FUNCTION(LLP) SOT-23 1 1 GND Ground reference RESET (LM809) Active-low output. RESET remains low while V CC is below the reset threshold, and for 240ms after V CC rises above the reset threshold. RESET (LM810) Active-high output. RESET remains high while V CC is below the reset threshold, and for 240ms after V CC rises above the reset threshold. 53 V CC Supply Voltage (+5V, +3.3V, or +3.0V) LM809/LM810 www.national.com 2

Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V CC −0.3V to 6.0V RESET, RESET −0.3V to (V CC+ 0.3V) Input Current, VCC Pin 20mA Output Current, RESET, RESET Pin 20mA Rate of Rise, V CC 100V/µs ESD Rating (Note 2) 2kV Continuous Power Dissipation (Note 4) 320mW θJA: LLP-6 152˚C/W SOT23-3 326˚C/W Ambient Temperature Range −40˚C to +105˚C Maximum Junction Temperature 125˚C Storage Temperature Range −65˚C to +160˚C Lead Temperature (soldering, 10sec) +300˚C

Electrical Characteristics

VCC = full range, T A = −40˚C to +105˚C, unless otherwise noted. Typical values are at T A = +25˚C, VCC = 5V for Symbol Parameter Conditions Min Typ Max Units VCC Range TA = 0˚C to +70˚C 1.0 5.5 VTA = −40˚C to +105˚C 1.2 5.5 ICC Supply Current TA = −40˚C to +85˚C VCC<5.5V, LM8_ _ -4.63/4.38/4.00 18 60 µA VCC<3.6V, LM8_ _ 15 50 TA = +85˚C to +105˚C VCC<5.5V, LM8_ _ -4.63/4.38/4.00 100 VCC<3.6V, LM8_ _ 100 VTH Reset Threshold (Note 5) LM8_ _ -4.63 TA = +25˚C 4.56 4.63 4.70 V TA = −40˚C to +85˚C 4.50 4.75 TA = +85˚C to +105˚C 4.40 4.86 LM8_ _ -4.38 TA = +25˚C 4.31 4.38 4.45 TA = −40˚C to +85˚C 4.25 4.50 TA = +85˚C to +105˚C 4.16 4.56 LM8_ _ -4.00 TA = +25˚C 3.93 4.00 4.06 TA = −40˚C to +85˚C 3.89 4.10 TA = +85˚C to +105˚C 3.80 4.20 LM8_ _ -3.08 TA = +25˚C 3.04 3.08 3.11 TA = −40˚C to +85˚C 3.00 3.15 TA = +85˚C to +105˚C 2.92 3.23 LM8_ _ -2.93 TA = +25˚C 2.89 2.93 2.96 TA = −40˚C to +85˚C 2.85 3.00 TA = +85˚C to +105˚C 2.78 3.08 LM8_ _ -2.63 TA = +25˚C 2.59 2.63 2.66 TA = −40˚C to +85˚C 2.55 2.70 TA = +85˚C to +105˚C 2.50 2.76 LM8_ _ -2.45 TA = +25˚C 2.41 2.45 2.49 TA = −40˚C to +85˚C 2.38 2.52 TA = +85˚C to +105˚C 2.33 2.57 Reset Threshold Temperature Coefficient 30 ppm/˚C VCC to Reset Delay (Note 5) V CC =V TH to (VTH − 100mV) 20 µs Reset Active Timeout Period TA = −40˚C to +85˚C 140 240 560 msTA = +85˚C to +105˚C 100 840 LM809/LM810 www.national.com3

Electrical Characteristics (Continued) VCC = full range, T A = −40˚C to +105˚C, unless otherwise noted. Typical values are at T A = +25˚C, VCC = 5V for Symbol Parameter Conditions Min Typ Max Units VOL RESET Output Voltage Low (LM809) VCC =V TH min, ISINK = 1.2mA, 0.3 VVCC =V TH min, ISINK = 3.2mA, 0.4 VCC > 1.0V, ISINK = 50µA 0.3 VOH RESET Output Voltage High (LM809) VCC > VTH max, ISOURCE = 500µA, 0.8VCC VVCC > VTH max, ISOURCE = 800µA, VCC−1.5 VOL RESET Output Voltage Low (LM810) VCC =V TH max, ISINK = 1.2mA, 0.3 VVCC =V TH max, ISINK = 3.2mA, 0.4 VOH RESET Output Voltage High (LM810) 1.8V < VCC < VTH min, ISOURCE = 150µA 0.8VCC V Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which the device operates correctly. Operating ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see th e Electrical Characteristics. Note 2: The human body model is a 100pF capacitor discharged through a 1.5k Ω resistor into each pin. Note 3: Production testing done at T A = +25˚C, over temperature limits guaranteed by design only. Note 4: At elevated temperatures, devices must be derated based on package thermal resistance. The device in the SOT23-3 package must be derated at 4mW/˚C at ambient temperatures above 70˚C. The device has internal thermal protection. Note 5: RESET Output for LM809, RESET output for LM810. LM809/LM810 www.national.com 4

Typical Performance Characteristics Supply Current vs Temperature (No Load, LM8_ _-2.63/2.93/3.08) 10105703 Supply Current vs Temperature (No Load, LM8_ _-4.63/4.38) 10105704 Power-Down Reset Delay vs Temp 10105705 Power-Down Reset Delay vs Temperature (LM8_ _-4.63/4.38) 10105706 Power-Up Reset Timeout vs Temperature 10105707 Normalized Reset Threshold vs Temperature 10105708 LM809/LM810 www.national.com5

Physical Dimensions inches (millimeters) unless otherwise noted 3-Lead SOT23-3 For Ordering, refer to Ordering Information table 6-Lead LLP (NLDBB006) For Ordering, refer to Ordering Information table LM809/LM810 www.national.com7

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Corporation Americas Email: support@nsc.com National Semiconductor Europe Fax: +49 (0) 180-530 85 86 Email: europe.support@nsc.com Deutsch Tel: +49 (0) 69 9508 6208 English Tel: +44 (0) 870 24 0 2171 Français Tel: +33 (0) 1 41 91 8790 National Semiconductor Asia Pacific Customer Response Group Tel: 65-2544466 Fax: 65-2504466 Email: ap.support@nsc.com National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 www.national.com LM809/LM810 3-Pin Microprocessor Reset Circuits National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the righ t at any time without notice to change said circuitry and specifications.