Datasheet LM3722, LM3723, LM3724 (Texas Instruments) - 10
| 制造商 | Texas Instruments |
| 描述 | 5-Pin Microprocessor Reset Circuits |
| 页数 / 页 | 20 / 10 — LM3722,. LM3723,. LM3724. www.ti.com. LM3722 |
| 文件格式/大小 | PDF / 1.1 Mb |
| 文件语言 | 英语 |
LM3722,. LM3723,. LM3724. www.ti.com. LM3722
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LM3722, LM3723, LM3724
SNVS154E – MAY 2001 – REVISED MARCH 2013
www.ti.com
VIN IN OUT VOUT LM2941 + 24.9k 2.2PF SD GND ADJ 7.15k 14.7k 11.5k V V CC OUT = 3.3V VIN(TRIP) = 5.0V
LM3722
RESET MR OVERRIDE 5V 4V VIN 3.3V VOUT tRP RESET
Figure 16. Regulator/Switch with Long-Term Overvoltage Lockout Prevents Overdissipation in Linear Regulator
3.3V VCC RESET
LM3722
MR RESET GND tRP tRP tRP Mechanical Switch MR
Figure 17. LM3722 Switch Debouncer
10 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated 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
SNVS154E – MAY 2001 – REVISED MARCH 2013
www.ti.com
VIN IN OUT VOUT LM2941 + 24.9k 2.2PF SD GND ADJ 7.15k 14.7k 11.5k V V CC OUT = 3.3V VIN(TRIP) = 5.0V
LM3722
RESET MR OVERRIDE 5V 4V VIN 3.3V VOUT tRP RESET
Figure 16. Regulator/Switch with Long-Term Overvoltage Lockout Prevents Overdissipation in Linear Regulator
3.3V VCC RESET
LM3722
MR RESET GND tRP tRP tRP Mechanical Switch MR
Figure 17. LM3722 Switch Debouncer
10 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated 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