LM809M3-3.08/NOPB

Manufacturer Part NumberLM809M3-3.08/NOPB
DescriptionIC MICRO RESET CIRCUIT SOT23-3
ManufacturerNational Semiconductor
TypeSimple Reset/Power-On Reset
LM809M3-3.08/NOPB datasheet
 


Specifications of LM809M3-3.08/NOPB

Number Of Voltages Monitored1OutputPush-Pull, Totem Pole
ResetActive LowReset Timeout140 ms Minimum
Voltage - Threshold3.08VOperating Temperature-40°C ~ 105°C
Mounting TypeSurface MountPackage / CaseSOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Monitored Voltage3 V , 3.3 V , 5 VUndervoltage Threshold3.04 V
Overvoltage Threshold3.11 VOutput TypeActive Low
Manual ResetNot ResettableWatchdogNo Watchdog
Battery Backup SwitchingNoPower-up Reset Delay (typ)840 ms
Supply Voltage (max)5.5 VSupply Voltage (min)1 V
Supply Current (typ)15 uA (Typ)Maximum Power Dissipation320 mW
Maximum Operating Temperature+ 105 CMounting StyleSMD/SMT
Minimum Operating Temperature- 40 CPower Fail DetectionNo
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther namesLM809M3-3.08
LM809M3-3.08TR
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LM809/LM810
3-Pin Microprocessor Reset Circuits
General Description
The LM809/810 microprocessor supervisory circuits can be
used to monitor the power supplies in microprocessor and
digital systems. They provide a reset to the microprocessor
during power-up, power-down and brown-out conditions.
The function of the LM809/810 is to monitor the V
voltage, and assert a reset signal whenever this voltage
declines below the factory-programmed reset threshold. The
reset signal remains asserted for 240ms after V
above the threshold. The LM809 has an active-low RESET
output, while the LM810 has an active-high RESET output.
Seven standard reset voltage options are available, suitable
for monitoring 5V, 3.3V, and 3V supply voltages.
With a low supply current of only 15µA, the LM809/810 are
ideal for use in portable equipment. The LM809/LM810 are
available in the 3-pin SOT23 package and in the 6-Lead LLP
package.
Typical Application Circuit
Connection Diagrams
( ) are for LM810
© 2002 National Semiconductor Corporation
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
supply
Active-low RESET Output (LM809)
CC
Active-high RESET Output (LM810)
n Guaranteed RESET Output valid for V
rises
n Low Supply Current, 15µA typ.
CC
n Power supply transient immunity
Applications
n Microprocessor Systems
n Computers
n Controllers
n Intelligent Instruments
n Portable/Battery-Powered Equipment
n Automotive
10105701
10105702
See NS package Number LDB06A
DS101057
September 2002
≥1V
CC
10105715
Top View
( ) are for LM810
www.national.com

LM809M3-3.08/NOPB Summary of contents

  • Page 1

    ... SOT23 package and in the 6-Lead LLP package. Typical Application Circuit Connection Diagrams ( ) are for LM810 © 2002 National Semiconductor Corporation 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 ...

  • Page 2

    ... RESET (LM810 www.national.com LM809 Supplied as 3000 Package units, tape & reel Top Mark LM809M3X-4.63 S8B LM809M3X-4.38 S7B LM809M3X-4.00 S6B LM809M3X-3.08 S5B LM809M3X-2.93 S4B LM809M3X-2.63 S3B LM809M3X-2.45 SFB LM810 Supplied as 3000 Package units, tape & reel Top Mark LM810M3X-4.63 SEB LM810M3X-4.38 SDB LM810M3X-4 ...

  • Page 3

    ... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications RESET, RESET −0. Input Current, V Pin CC Output Current, RESET, RESET Pin Rate of Rise ESD Rating (Note 2) Electrical Characteristics V = full range −40˚C to +105˚C, unless otherwise noted. Typical values are at T ...

  • Page 4

    Electrical Characteristics V = full range −40˚C to +105˚C, unless otherwise noted. Typical values are 4.63/4.38/4.00 versions 3.3V for 3.08/2.93 versions, and V CC Symbol Parameter RESET Output Voltage Low V OL ...

  • Page 5

    Typical Performance Characteristics Supply Current vs Temperature (No Load, LM8_ _-2.63/2.93/3.08) Supply Current vs Temperature (No Load, LM8_ _-4.63/4.38) Power-Down Reset Delay vs Temp (LM8_ _-2.63/2.93/3.08) Power-Down Reset Delay vs Temperature 10105703 Power-Up Reset Timeout vs Temperature 10105704 Normalized Reset ...

  • Page 6

    ... LLP Mounting immune to short The LLP package requires special mounting techniques . Figure 2 shows which are detailed in National Semiconductor Application CC transient Note AN-1187. Referring to the section PCB Design Recom- CC mendations, it should be noted that the pad style which should be used with the LLP package is the NSMD (non- solder mask defined) type ...

  • Page 7

    Physical Dimensions inches (millimeters) unless otherwise noted For Ordering, refer to Ordering Information table For Ordering, refer to Ordering Information table 3-Lead SOT23-3 NS Package Number M03B 6-Lead LLP (NLDBB006) NS Package Number LDB06A 7 www.national.com ...

  • Page 8

    ... 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 ...