MCP809 NSC | Alldatasheet

Document overview

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Technical content

Features

n Precise monitoring of 3V, 3.3V, and 5V supply voltages n Fully specified over temperature n 140ms min. Power-On Reset pulse width, 240ms typical Active-low RESET Output (MCP809) Active-high RESET Output (MCP810) n Guaranteed RESET Output valid for VCC ≥1V n Low Supply Current, 15µA typ. n Power supply transient immunity

Applications

n Portable/Battery-Powered Equipment n Automotive Typical Application Circuit 20022301 Connection Diagram 20022302 ( ) are for MCP810 June 2001 MCP809/MCP810 3-Pin Microprocessor Reset Circuits © 2001 National Semiconductor Corporation DS200223 www.national.com

Ordering Information

(V) MCP809 Supplied as 1000 units, tape & reel MCP809 Supplied as 3000 units, tape & reel Package Top Mark Package Type NSC Package 4.63 MCP809M3-4.63 MCP809M3X-4.63 SVB SOT23-3 MF03A 4.38 MCP809M3-4.38 MCP809M3X-4.38 SUB 4.00 MCP809M3-4.00 MCP809M3X-4.00 STB 3.08 MCP809M3-3.08 MCP809M3X-3.08 SSB 2.93 MCP809M3-2.93 MCP809M3X-2.93 SRB 2.63 MCP809M3-2.63 MCP809M3X-2.63 SPB Reset Threshold (V) MCP810 Supplied as 1000 units, tape & reel MCP810 Supplied as 3000 units, tape & reel Package Top Mark Package Type NSC Package 4.63 MCP810M3-4.63 MCP810M3X-4.63 SNB SOT23-3 MF03A 4.38 MCP810M3-4.38 MCP810M3X-4.38 SLB 4.00 MCP810M3-4.00 MCP810M3X-4.00 SKB 3.08 MCP810M3-3.08 MCP810M3X-3.08 SJB 2.93 MCP810M3-2.93 MCP810M3X-2.93 SHB 2.63 MCP810M3-2.63 MCP810M3X-2.63 SGB Custom voltages and improved accuracies are available, subject to minimum orders. Contact your local National Semiconductor Sales Office for information. Pin Description PIN NAME FUNCTION

3 GND Ground reference

RESET (MCP809) Active-low output. RESET remains low while VCC is below the reset threshold, and for 240ms after VCC rises above the reset threshold. RESET (MCP810) Active-high output. RESET remains high while VCC is below the reset threshold, and for 240ms after VCC rises above the reset threshold. 2V CC Supply Voltage (+5V, +3.3V, or +3.0V) MCP809/MCP810 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 (VCC + 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 (TA = +70˚C) SOT-23 (Note 3) 320mW 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, TA = −40˚C to +105˚C, unless otherwise noted. Typical values are at TA = +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, MCP8_ _ -4.63/4.38/4.00 18 60 µA VCC <3.6V, MCP8_ _ -3.08/2.93/2.63 15 50 TA = +85˚C to +105˚C VCC <5.5V, MCP8_ _ -4.63/4.38/4.00 100 VCC <3.6V, MCP8_ _ -3.08/2.93/2.63 100 VTH Reset Threshold (Note 5) MCP8_ _ -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 MCP8_ _ -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 MCP8_ _ -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 MCP8_ _ -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 MCP8_ _ -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 MCP8_ _ -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 Reset Threshold Temperature Coefficient 30 ppm/˚C VCC to Reset Delay (Note 5) VCC =V TH to (VTH − 100mV) 20 µs Reset Active Timeout PeriodTA = −40˚C to +85˚C 140 240 560 msTA = +85˚C to +105˚C 100 840 MCP809/MCP810 www.national.com3

Electrical Characteristics(Continued) VCC = full range, TA = −40˚C to +105˚C, unless otherwise noted. Typical values are at TA = +25˚C, VCC = 5V for Symbol Parameter Conditions Min Typ Max Units VOL RESET Output Voltage Low (MCP809) 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 (MCP809) VCC > VTH max, ISOURCE = 500µA, 0.8VCC VVCC > VTH max, ISOURCE = 800µA, VCC −1.5 VOL RESET Output Voltage Low (MCP810) VCC =V TH max, ISINK = 1.2mA, 0.3 VVCC =V TH max, ISINK = 3.2mA, 0.4 VOH RESET Output Voltage High (MCP810) 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 the Electrical Characteristics. Note 2:The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. Note 3:Production testing done at TA = +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 MCP809, RESET output for MCP810. MCP809/MCP810 www.national.com 4

Typical Performance Characteristics Supply Current vs Temperature (No Load, MCP8_ _-2.63/2.93/3.08) Supply Current vs Temperature (No Load, MCP8_ _-4.63/4.38) Power-Down Reset Delay vs Temp 20022303 20022304 20022305 Power-Down Reset Delay vs Temperature (MCP8_ _-4.63/4.38) Power-Up Reset Timeout vs Temperature Normalized Reset Threshold vs Temperature 20022306 20022307 20022308 MCP809/MCP810 www.national.com5

Physical Dimensionsinches (millimeters) unless otherwise noted 3-Lead SOT23-3 For Ordering, refer to Ordering Information table LIFE SUPPORT POLICY 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 MCP809/MCP810 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 right at any time without notice to change said circuitry and specifications.