LM2595

Features: 3.3V, 5V, 12V, and adjustable output versionsAdjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditionsAvailable in TO-220 and TO-263 (surface mount) packagesGuaranteed 1A output load currentInput voltage range up to 40VRequires only 4 external componentsE...

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LM2595 Picture
SeekIC No. : 004394911 Detail

LM2595: Features: 3.3V, 5V, 12V, and adjustable output versionsAdjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditionsAvailable in TO-220 and TO-263 (surface mount) packag...

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Part Number:
LM2595
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

3.3V, 5V, 12V, and adjustable output versions
Adjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditions
Available in TO-220 and TO-263 (surface mount) packages
Guaranteed 1A output load current
Input voltage range up to 40V
Requires only 4 external components
Excellent line and load regulation specifications
150 kHz fixed frequency internal oscillator
TTL shutdown capability
Low power standby mode, IQ typically 85 µA
High efficiency
Uses readily available standard inductors
Thermal shutdown and current limit protection





Application

Simple high-efficiency step-down (buck) regulator
Efficient pre-regulator for linear regulators
On-card switching regulators
Positive to negative converter





Pinout

  Connection Diagram




Specifications

Maximum Supply Voltage 45V
Feedback Pin Voltage −0.3 V +25V
Output Voltage to Ground
(Steady State) −1V
Power Dissipation Internally limited
Storage Temperature Range −65˚C to +150˚C
ESD Susceptibility
Human Body Model (Note 2) 2 kV
Lead Temperature
S Package
Vapor Phase (60 sec.) +215˚C
Infrared (10 sec.) +245˚C
T Package (Soldering, 10 sec.) +260˚C
Maximum Junction Temperature +150˚C


Output Current 1000 mA
Input Min Voltage 4.5, 7, 4.75, 15 Volt
Input Max Voltage 40 Volt
Output Min 3.3, 1.23, 12, 5 Volt
Output Max 3.3, 37, 12, 5 Volt
Frequency Min 150 kHz
Frequency Max 150 kHz
Efficiency (peak) 90, 78, 82 %
On/Off Pin Yes
Error Flag No
SoftStart No
Sync Pin No
Inverting Yes
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Adjustable Output Yes, No
Adj Switch Frequency No
PWM Mode Voltage
Topology Buck
Special Features SIMPLE SWITCHER regulator
Step-Down Yes
Multiple Output Capability No
Output Power Undefined Watt
Output Voltage 3.3, Undefined, 12, 5 Volt
Output Range 5V, 12V, 1.23V to 37V, 3.3V
Switching Frequency 150 kHz
Regulator Family SIMPLE SWITCHER
AEC Q-100 Automotive Grade Undefined
Synchronous Rectification No
View Using Catalog





Description

The LM2595 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, and a fixed-frequency oscillator.

The LM2595 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package. Typically, for output voltages less than 12V, and ambient temperatures less than 50°C, no heat sink is required.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85 µA stand-by current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2595S-12 LB300 0 32249 0 0 3406500 2 966603676
LM2595S-3.3 LB300 0 32249 0 0 3406500 2 966603676
LM2595S-5.0 LB300 0 32249 0 0 3406500 2 966603676
LM2595S-ADJ LB300 0 32249 0 0 3406500 2 966603676
LM2595SX-12 LB300 0 32249 0 0 3406500 2 966603676
LM2595SX-3.3 LB300 0 32249 0 0 3406500 2 966603676
LM2595SX-5.0 LB300 0 32249 0 0 3406500 2 966603676
LM2595SX-ADJ LB300 0 32249 0 0 3406500 2 966603676
LM2595T-12 LB300 0 32249 0 0 3406500 2 966603676
LM2595T-3.3 LB300 0 32249 0 0 3406500 2 966603676
LM2595T-5.0 LB300 0 32249 0 0 3406500 2 966603676
LM2595T-ADJ LB300 0 32249 0 0 3406500 2 966603676

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Design Tools


Title Size in Kbytes Date
SimpleSwitcher® DC-DC Converters Design Software 12 Kbytes 11-Jan-2008 View

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Application Notes


Title Size in Kbytes Date
AN-1118: AN-1118 Simple Regulator Provides ±12V from 5V Source 51 Kbytes 4-Oct-04 Download
AN-1061: Application Note 1061 Power Conversion in Line-Powered Equipment 162 Kbytes 1-Oct-02 Download
AN-1061 (Japanese): Application Note 1061 Power Conversion in Line-Powered Equipment
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
215 Kbytes

If you have trouble printing or viewing PDF file(s), see Printing Problems.

More Application Notes


Title Size in Kbytes Date
AN-1229: Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines 229 Kbytes 1-May-04 Download
AN-1229 (Japanese): Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
304 Kbytes
AN-1229 (Chinese): Application Note 1229 SIMPLE SWITCHER PCB Layout Guidelines
668 Kbytes 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1082: Application Note 1082 Adjust or Synchronize LM2586/88 Switching Frequency 50 Kbytes 4-Oct-04 Download
AN-1082 (Japanese): Application Note 1082 Adjust or Synchronize LM2586/88 Switching Frequency
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
85 Kbytes
AN-1081: Application Note 1081 A Low Cost, Low Parts-Count DC/DC Converter With Multiple Outputs 74 Kbytes 4-Oct-04 Download
AN-1253: Application Note 1253 Wide-Input, High Voltage Buck Converter 144 Kbytes 25-Sep-02 Download
AN-1566: Application Note 1566 Techniques for Thermal Analysis of Switching Power Supply Designs 370 Kbytes 7-Feb-07 Download
AN-1566 (Japanese): Application Note 1566 Techniques for Thermal Analysis of Switching Power Supply Designs
640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
442 Kbytes
AN-1566 (Chinese): Application Note 1566 Techniques for Thermal Analysis of Switching Power Supply Designs
282 Kbytes 640){this.height=this.height*640/this.width;this.width=640;}' border="0" alt=" Connection Diagram">
AN-1207: Application Note 1207 LM2593HV Evaluation Board 219 Kbytes 10-May-04 Download
AN-1797: Application Note 1797 TO-263 THIN Package 2716 Kbytes 10-Mar-08 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.






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