LM3710XKMM-463/NOPB National Semiconductor, LM3710XKMM-463/NOPB Datasheet

LM3710XKMM-463/NOPB

Manufacturer Part Number

LM3710XKMM-463/NOPB

Description

IC MPU SUPERVISOR 4.63V 10MSOP

Manufacturer

National Semiconductor

Type

Simple Reset/Power-On Resetr

Datasheet

1.LM3710XQMM-308NOPB.pdf (18 pages)

Specifications of LM3710XKMM-463/NOPB

Number Of Voltages Monitored

Output

Push-Pull, Totem Pole

Reset

Active Low

Reset Timeout

20 ms Minimum

Voltage - Threshold

4.63V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

10-MSOP, Micro10™, 10-uMAX, 10-uSOP

Number Of Elements

Monitored Voltage 1 (typ)

1 to 5.5V

Battery Backup Switching

Watchdog Timer

Yes

Chip Enable Signals

Reset Active Time

28ms(Typ)ms

Manual Reset

Yes

Package Type

MSOP

Operating Supply Voltage (min)

Operating Supply Voltage (max)

5.5V

Reset Threshold Voltage (max)

4.65V

Reset Threshold Voltage (min)

4.6V

Family Name

LM3710

Operating Temp Range

-40C to 85C

Operating Temperature Classification

Industrial

Power Fail Detection

Yes

Mounting

Surface Mount

Pin Count

Supply Current

0.05mA

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

LM3710XKMM-463
LM3710XKMM-463TR

Current page: 1 of 18
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LM3710/LM3711

Microprocessor Supervisory Circuits with Power Fail

Input, Low Line Output, Manual Reset and Watchdog

Timer

General Description

The LM3710/LM3711 series of microprocessor supervisory

circuits provide the maximum flexibility for monitoring power

supplies and battery controlled functions in systems without

backup batteries. The LM3710/LM3711 series are available

in MSOP-10 and 9-bump micro SMD packages.

Built-in features include the following:

Reset: Reset is asserted during power-up, power-down, and

brownout conditions. RESET is guaranteed down to V

1.0V.

Manual Reset Input: An input that asserts reset when pulled

low.

Power-Fail Input: A 1.225V threshold detector for power fail

warning, or to monitor a power supply other than V

Low Line Output: This early power failure warning indicator

goes low when the supply voltage drops to a value which is

2% higher than the reset threshold voltage.

Watchdog Timer: The WDI (Watchdog Input) monitors one of

the µP’s output lines for activity. If no output transition occurs

during the watchdog timeout period, reset is activated.

Typical Application

DS200118

Features

n Standard Reset Threshold voltage: 3.08V

n Custom Reset Threshold voltages: For other voltages

n No external components required

n Manual-Reset input

n RESET (LM3710) or RESET (LM3711) outputs

n Precision supply voltage monitor

n Factory programmable Reset and Watchdog Timeout

n Separate Power Fail comparator

n Available in micro SMD package for minimum footprint

n Reset assertion down to 1V V

n 28 µA V

Applications

n Embedded Controllers and Processors

n Intelligent Instruments

n Automotive Systems

n Critical µP Power Monitoring

between 2.2V and 5.0V in 10mV increments, contact

National Semiconductor Corp.

Delays

extremes

0.5% Reset threshold accuracy at room temperature

2% Reset threshold accuracy over temperature

supply current

20011803

(RESET option only)

January 2005

www.national.com

Related parts for LM3710XKMM-463/NOPB

LM3710XKMM-463/NOPB Summary of contents

Page 1

... Watchdog Timer: The WDI (Watchdog Input) monitors one of the µP’s output lines for activity output transition occurs during the watchdog timeout period, reset is activated. Typical Application © 2005 National Semiconductor Corporation Features n Standard Reset Threshold voltage: 3.08V n Custom Reset Threshold voltages: For other voltages between 2 ...

Page 2

Connection Diagram MSOP-10 Pin Descriptions Pin No. Name micro MSOP SMD RESET RESET C2 8 PFO C3 7 LLO B3 5 GND A3 4 WDI A2 3 PFI ...

Page 3

Block Diagram 3 20011805 www.national.com ...

Page 4

... National Semiconductor sales office. Part Number Output LM3710XKBP-232 totem-pole LM3710XKBPX-232 totem-pole LM3710XKBP-463 totem-pole LM3710XKBPX-463 totem-pole LM3710XKMM-232 totem-pole LM3710XKMMX-232 totem-pole LM3710XKMM-463 totem-pole LM3710XKMMX-463 totem-pole LM3710XNMM-450 totem-pole LM3710XNMMX-450 totem-pole LM3710XNMM-470 totem-pole LM3710XNMMX-470 totem-pole LM3710XQBP-308 totem-pole LM3710XQBPX-308 totem-pole LM3710YQMM-232 open-drain LM3710YQMMX-232 ...

Page 5

Ordering Information (Continued) Part Number Output LM3710XQMMX-308 totem-pole LM3711XQBP-308 totem-pole LM3711XQBPX-308 totem-pole LM3711XQMM-308 totem-pole LM3711XQMMX-308 totem-pole %% is the datecode and will vary with time. Table Of Functions Part Active Active Output Number Low High (X = totem-pole) Reset Reset ...

Page 6

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( All Other Inputs ESD Ratings (Note 2) Human Body Model Machine Model LM3710/LM3711 Series Electrical Characteristics Limits in the standard typeface are for T specified ...

Page 7

LM3710/LM3711 Series Electrical Characteristics Limits in the standard typeface are for T specified +2.2V to 5.5V. CC Symbol Parameter WDI WDI Watchdog Input Current WDI Watchdog Input T Threshold t Watchdog Watchdog Timeout Period = ...

Page 8

LM3710/LM3711 Series Electrical Characteristics Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. For ...

Page 9

Typical Performance Characteristics Supply Current vs Supply Voltage Normalized Reset Threshold Voltage vs Temperature Reset Timeout Period vs Temperature 3.3V Supply Current vs Temperature 20011815 Reset Timeout Period vs V 20011812 Max. Transient Duration vs Reset Comparator Overdrive 20011810 9 ...

Page 10

Typical Performance Characteristics Watchdog Timeout Period vs Temperature (t programmed as 6.2ms) WD www.national.com (Continued) Low-Line Comparator Propagation Delay vs Temperature 20011813 10 20011814 ...

Page 11

... IR MRT light during operation. MICRO SMD MOUNTING The micro SMD package requires specific mounting tech- niques which are detailed in National Semiconductor Appli cation Note AN-1112. Referring to the section Surface PFT Mount Technology (SMT) Assembly Considerations, it ...

Page 12

Timing Diagrams FIGURE 1. LM3710/LM3711 Reset Time with MR and WDI www.national.com FIGURE 2. LLO Output FIGURE 3. PFI Comparator Timing Diagram 12 20011828 20011829 20011830 ...

Page 13

Typical Application Circuits FIGURE 4. Monitoring Two Critical Supplies And Dataline FIGURE 5. Monitoring Two Supplies plus Manual Reset And Dataline 20011818 20011819 13 www.national.com ...

Page 14

Typical Application Circuits FIGURE 6. Monitoring Dual Supplies plus External Fault Input And Dataline Note: MR input with its 1.225V nominal threshold, may monitor an additional supply voltage. An internal 56 kΩ pull-up resistor is included on this input. FIGURE ...

Page 15

Typical Application Circuits (Continued) FIGURE 8. LM3710 Long Period oscillator 15 20011840 www.national.com ...

Page 16

Physical Dimensions unless otherwise noted www.national.com inches (millimeters) 10 Lead MSOP Package NS Package Number MUB10A 16 ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) NOTES: UNLESS OTHERWISE SPECIFIED 1. EPOXY COATING 2. 63Sn/37Pb EUTECTIC BUMP 3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD. 4. PIN 1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. ...

Page 18

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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