Datasheet LM3722, LM3723, LM3724 (Texas Instruments) - 3

LM3722 , LM3723, LM3724 www.ti.com
SNVS154E – MAY 2001 – REVISED MARCH 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings (1)(2)
VCC, MR −0.3V to 6.0V RESET, RESET −0.3V to (VCC+ 0.3V) Input Current, VCC Pin 20mA Output Current, RESET, RESET Pin 20mA ESD Rating (3) 2kV Continuous Power Dissipation (TA = +70°C) SOT-23 (4) 320mW Operating Temperature Range Industrial: −40°C to +85°C Extended: −40°C to +125°C Maximum Junction Temperature 125°C Storage Temperature Range −65°C to +160°C Lead Temperature (soldering, 10sec) +300°C (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. (2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications. (3) The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. (4) At elevated temperatures, devices must be derated based on package thermal resistance. The device in the SOT-23-5 package must be derated at 4.5mW/°C at ambient temperatures above 70°C. The device has internal thermal protection.
Electrical Characteristics
Typical values are at TA = +25°C. Limits with standard typeface are for TA = +25°C, and limits in boldface type apply for the operating temperature range (−40°C to +85°C) for LM372_IM5X, and (−40°C to +125°C) for LM372_EM5X, unless otherwise noted. (1)
Symbol Parameter Conditions Min Typ Max Units
VCC VCC Range
1.0 5.5
V LM372 _ -4.63 VCC = 5.5V 8
15
µA Supply Current ICC LM372 _ -3.08 VCC = 3.6V 7
10
(ILOAD = 0A) LM372 _ -2.32 VCC = 2.5V 6
10
4.54 4.63 4.72 LM372 _ -4.63
4.50 4.75
3.03 3.08 3.14 VTH Reset Threshold LM372 _ -3.08 V
3.00 3.15
2.27 2.32 2.37 LM372 _ -2.32
2.25 2.40
VTH Reset Threshold Temperature 30 ppm/°C Tempco Coefficient tRD VCC to Reset Delay (2) VCC = VTH to (VTH − 100mV) 20 µs tRP Reset Active Timeout Period
100
190
560
ms tMR MR Minimum Pulse Width
10
µs tMD MR to Reset Propagation Delay 2 µs MR Glitch Immunity (3) 100 ns (1) Production testing done at TA = +25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. (2) RESET Output for LM3722 and LM3724, RESET output for LM3723. (3) Glitches of 100 ns or less typically will not generate a reset pulse. Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM3722 LM3723 LM3724 Document Outline FEATURES APPLICATIONS DESCRIPTION Typical Application Circuits Connection Diagram Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Timing Diagram Circuit Information RESET OUTPUT RESET THRESHOLD MANUAL RESET INPUT (MR) Applications Information BENEFITS OF PRECISION RESET THRESHOLDS ENSURING A VALID RESET OUTPUT DOWN TO VCC = 0V OPEN DRAIN OUTPUT (LM3724) NEGATIVE-GOING VCC TRANSIENTS INTERFACING TO µPS WITH BIDIRECTIONAL RESET PINS Typical Application Circuits Revision History