Pinout
Specifications| Output Current | 1000 mA |
| Input Min Voltage | 4.5 Volt |
| Input Max Voltage | 60 Volt |
| Output Min | 3.3, 1.23, 5 Volt |
| Output Max | 57, 3.3, 5 Volt |
| Frequency Min | 150 kHz |
| Frequency Max | 150 kHz |
| Efficiency (peak) | 77, 76, 82 % |
| On/Off Pin | Yes |
| Error Flag | Yes |
| SoftStart | Yes |
| Sync Pin | No |
| Inverting | No |
| Flyback | No |
| RegType | Switching Regulator |
| Temperature Min | -40 deg C |
| Temperature Max | 150 deg C |
| Adjustable Output | Yes, No |
| Adj Switch Frequency | No |
| PWM Mode | Voltage |
| Topology | Buck |
| Special Features | SIMPLE SWITCHER regulator, error output delay |
| Step-Down | Yes |
| Multiple Output Capability | No |
| Output Power | Undefined Watt |
| Output Voltage | 3.3, Undefined, 5 Volt |
| Output Range | 5V, 3.3V, 1.23V to 57V |
| Switching Frequency | 150 kHz |
| Regulator Family | SIMPLE SWITCHER |
| AEC Q-100 Automotive Grade | Undefined |
| Synchronous Rectification | No |
| View Using Catalog |
DescriptionThe 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.
Reliability Metrics
| Part Number |
Process |
EFR Reject |
EFR Sample Size |
PPM |
LTA Rejects |
LTA Device Hours |
FITS |
MTTF (Hours) |
| LM2590HVS5.0-AQ |
LB300 |
0 |
32249 |
0 |
0 |
3406500 |
2 |
966603676 |
| LM2590HVSX5.0AQ |
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.
LM2590HV-AQ Data Sheet
