| Part Number(s) (NSID) |
Top View | Type | Pins | MSL Rating | Peak Reflow | RoHS Status |
CAD Symbols | Models | Package Marking Format |
|---|---|---|---|---|---|---|---|---|---|
| LM2590HVSX5.0AQ |
 |
TO-263 | 7 | 3 | 235 | Detail | N/A | N/A |
NSUZXYTTE# LM2590HVS 5.0AQ P+ |
PDF
Description
The LM2590HV-AQ regulator is a monolithic integrated circuit which provides all the active functions for a step-down (buck) switching regulator, and is capable of driving a 1 Amp load with excellent line and load regulation. The LM2590HV-AQ is available in fixed output voltages of 3.3V, 5.0V, as well as an adjustable output version.
The LM2590HV-AQ switching regulator is similar to the LM2591HV with additional supervisory and performance features.
Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, output error flag and flag delay.
The LM2590HV-AQ 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 7-lead TO-220 package with several different lead bend options, and a 7-lead TO-263 Surface mount package.
Other features include a guaranteed ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90 µA standby current. Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.
| • | Simple high-efficiency step-down (buck) regulator |
| • | Efficient pre-regulator for linear regulators |
| • | On-card switching regulators |
| • | Positive to Negative converter |
| • | Reliability Qualification for Automotive |
| • | 3.3V, 5V, and adjustable output versions |
| • | Adjustable version output voltage range, 1.2V to 57V ±4% max over line and load conditions |
| • | Guaranteed 1A output load current |
| • | Available in 7-pin TO-220 and TO-263 (surface mount) Package |
| • | Input voltage range up to 60V |
| • | 150 kHz fixed frequency internal oscillator |
| • | Shutdown/Soft-start |
| • | Out of regulation error flag |
| • | Error flag delay |
| • | Low power standby mode, IQ typically 90 µA |
| • | High Efficiency |
| • | Thermal shutdown and current limit protection |
Diagrams
Typical Application
|
Block Diagram
|
Typical Performance 
|
