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...
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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Power Management IC Development Tools LM25005 EVAL BOARD
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 |
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 |
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. |