LM3700XBBP-270 National Semiconductor, LM3700XBBP-270 Datasheet

IC MPU SUPERVISOR 2.7V 9MICROSMD

LM3700XBBP-270

Manufacturer Part Number
LM3700XBBP-270
Description
IC MPU SUPERVISOR 2.7V 9MICROSMD
Manufacturer
National Semiconductor
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of LM3700XBBP-270

Number Of Voltages Monitored
1
Output
Push-Pull, Totem Pole
Reset
Active Low
Reset Timeout
20 ms Minimum
Voltage - Threshold
2.7V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
9-MicroSMD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM3700XBBP-270TR
© 2003 National Semiconductor Corporation
LM3700/LM3701
Microprocessor Supervisory Circuit with Low Line
Output
General Description
The LM3700/LM3701 series of microprocessor supervisory
circuits provide the maximum flexibility for monitoring power
supplies and battery controlled functions in systems without
backup batteries. The LM3700/LM3701 series are available
in a 9-bump micro SMD package.
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.
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.
Features
n Standard Reset Threshold voltage: 3.08V
n Custom Reset Threshold voltages: For other voltages
Typical Application
between 2.2V and 5.0V in 10mV increments, contact
National Semiconductor Corp.
DS200114
CC
of
n No external components required
n RESET (LM3700) or RESET (LM3701) outputs
n Precision supply voltage monitor
n Factory programmable Reset Timeout Delay
n Available in micro SMD package for minimum footprint
n
n
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
extremes
±
±
0.5% Reset threshold accuracy at room temperature
2% Reset threshold accuracy over temperature
CC
supply current
20011403
CC
(RESET option only)
September 2003
www.national.com

Related parts for LM3700XBBP-270

LM3700XBBP-270 Summary of contents

Page 1

... Custom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp. Typical Application © 2003 National Semiconductor Corporation n No external components required n RESET (LM3700) or RESET (LM3701) outputs n Precision supply voltage monitor n Factory programmable Reset Timeout Delay n Available in micro SMD package for minimum footprint ± ...

Page 2

Connection Diagram Pin Descriptions Bump No. Name RESET RESET C3 LLO B3 GND A1, A2, A3 www.national.com Top View (looking from the coating side) micro SMD 9 Bump Package BPA09 20011401 Power ...

Page 3

Block Diagram 3 20011405 www.national.com ...

Page 4

... Ordering Information *For other voltages between 2.2V and 5.0V, please contact National Semiconductor sales office. LM3700/LM3701 Part Number LM3700XBBP-270 LM3700XBBPX-270 LM3700XCBP-290 LM3700XCBPX-290 LM3700XCBP-308 LM3700XCBPX-308 LM3701XCBP-308 LM3701XCBPX-308 LM3700XBBP-420 LM3700XBBPX-420 %% is the datecode and will vary with time. Table Of Functions Part Active Number Low ...

Page 5

... 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 LM3700/LM3701 Series Electrical Characteristics Limits in the standard typeface are for T specified ...

Page 6

LM3700/LM3701 Series Electrical Characteristics Limits in the standard typeface are for T specified +2.2V to 5.5V. CC Symbol Parameter LLO V LLO Output Voltage ...

Page 7

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 20011415 Reset Timeout Period vs V 20011412 Max. Transient Duration vs Reset Comparator Overdrive 20011410 7 ...

Page 8

Typical Performance Characteristics Low-Line Comparator Propagation Delay vs Temperature www.national.com (Continued) 20011414 8 ...

Page 9

... MICRO SMD MOUNTING The micro SMD package requires specific mounting tech- again niques which are detailed in National Semiconductor Appli- CC cation Note AN-1112. Referring to the section Surface Mount Technology (SMT) Assembly Considerations, it should be noted that the pad style which must be used with the 9-pin package is the NSMD (non-solder mask defined) type ...

Page 10

Timing Diagrams www.national.com FIGURE 1. LM3700 Reset Time FIGURE 2. LLO Output 10 20011428 20011429 ...

Page 11

Typical Application Circuits FIGURE 3. LM3701 Power-On Delay 11 20011424 www.national.com ...

Page 12

Typical Application Circuits FIGURE 4. Regulator/Switch with Long-Term Overvoltage Lockout Prevents Overdissipation in Linear Regulator www.national.com (Continued) 12 20011422 ...

Page 13

... 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 ...

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