LM2575YN More Semiconductors - ICs by Microchip Technology
1A Step-Down SMPS Regulator
| Status: | Active |
|---|---|
| Series: | LM2575 |
| RoHS: | Compliant |
The LM2575 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, 12V, or 15V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 1A load with excellent line and load regulation.
These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator.
The LM2575 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required.
A standard series of inductors available from several different manufacturers are ideal for use with the LM2575 series. This feature greatly simplifies the design of switch-mode power supplies.
The feedback voltage is guaranteed to ±2% tolerance for adjustable versions, and the output voltage is guaranteed to ±3% for fixed versions, within specified input voltages and output load conditions. The oscillator frequency is guaranteed to ±10%. External shutdown is included, featuring less than 200µA standby current. The output switch includes cycle-by-cycle current limiting and thermal shutdown for full protection under fault conditions.
Features
| 3.3V, 5V, 12V, and adjustable output versions |
| Voltage over specified line and load conditions: |
| Fixed version: ±3% max. output voltage |
| Adjustable version: ±2% max. feedback voltage |
| Guaranteed 1A output current |
| Wide input voltage range: 4V to 40V |
| Wide output voltage range: 1.23V to 37V |
| Requires only 4 external components |
| 52kHz fixed frequency internal oscillator |
| Low power standby mode IQ typically < 200µA |
| 80% efficiency (adjustable version typically > 80%) |
| Uses readily available standard inductors |
| Thermal shutdown and current limit protection |
| 100% electrical thermal limit burn-in |
Specifications
| Regulator Type | Step Down (Buck) |
|---|---|
| pricing | 0 |
| Supported Output | 0 |
| Minimum Input Voltage (V) | 0 |
| Maximum Input Voltage (V) | 40 |
| Output Current (mA) Max | 0 |
| Maximum Frequency (kHz) | 0 |
| Vref (V) | 0 |
| Duty Cycle Min (%) | 0 |
| Duty Cycle Max (%) | 0.98 |
| Switching Frequency (kHz) | 52 |
| Input Voltage Range Min | 4 |
| Input Voltage Range Max | 40 |
| Output Current | 1000 |
| Temp Range Min | -40 |
| Temp Range Max | 125 |
| Vout Min (V) | 1.23 |
| Quiescent Current (mA) typ | 10 |
| Light Load Efficiency Mode | No |
| Switch current (A) typ | 0 |
| Automotive Rated | No |
| SHUTDOWN Current (µA) (Typ) | 50 |
| # of Outputs | 1 |
| Vfb (V) | 1.23 |
| Synchronous Rectifier | No |
| Pins | Packaging | 16 | PDIP |
| Temp Range | -40C to +85C |
| Packing Media | Tube (25) |
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 1.1127 |
| Shipping Weight (kg) | 1.833333 |
| Lead Count | 16 |
| Package Type | PDIP |
| Package Width or Size | .300in |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| 1A Step-Down Smps Regulator 16 Pdip .300In Tube Rohs Compliant: Yes |Microchip LM2575YN | Newark Electronics |
| LM2575 Series 1.23 - 37 Adj Vout 1 A 52 KHz Step-Down Buck Regulator - PDIP-16 | Future Electronics |
| 1A STEP-DOWN SMPS REGULATOR | Avnet America |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a LM2575YN?
Additional datasheets, footprints and schematics for LM2575YN are listed on our Part Details page. You can also find images and similar parts to LM2575YN on this page.
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What category does LM2575YN fall under?
The LM2575YN is listed under Semiconductors - ICs > More Semiconductors - ICs.
Can I view similar or alternative parts?
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Is the LM2575YN RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
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Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics and Avnet America have stock available or on a lead time for LM2575YN.
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