LM2574-3.3YN Power Management ICs - PMIC by Microchip Technology
0.5A Step-Down SMPS Regulator
| Status: | Active |
|---|---|
| Series: | LM2574 |
| RoHS: | Compliant |
The LM2574 family is a series of easy to use fixed and adjustable switching voltage regulators. The LM2574 contains all of the active circuitry necessary to construct a stepdown (buck) switching regulator and requires a minimum of external components.
The LM2574 is available in 3.3V, 5V, and 12V fixed output versions, or an adjustable version with an output voltage range of 1.23V to 37V. Output voltage is guaranteed to ±4% for specified input and load conditions.
The LM2574 can supply 0.5A while maintaining excellent line and load regulation. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
An external shutdown connection selects operating or standby modes. Standby current is less than 200µA.
Heat sinks are generally unnecessary due the regulator's high efficiency. Adequate heat transfer is usually provided by soldering all package pins to a printed circuit board.
The LM2574 includes internal frequency compensation and an internal 52kHz fixed frequency oscillator guaranteed to ±10% of the frequency.
Circuits constructed around the LM2574 use a standard series of inductors which are available from several different manufacturers.
Where to Buy
Prices starting from US$0.88
| Distributor | Stock | ||
|---|---|---|---|
|
Microchip Technology
from US$0.88
|
4
in stock
|
Buy Now |
|
ECOM
from US$1.32
|
3
in stock
|
Buy Now |
|
RS
from US$1.00
|
0
in stock
|
Buy Now |
|
Newark Electronics
from US$0.95
|
0
in stock
|
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|
Future Electronics
from US$0.92
|
0
in stock
|
Buy Now |
|
TME
from US$0.92
|
0
in stock
|
Buy Now |
|
EBV Elektronik
-
|
0
in stock
|
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|
Avnet Silica
-
|
0
in stock
|
Buy Now |
| Buy Now |
Features
| 3.3V, 5V, 12V, and adjustable output versions |
| Adjustable version output 1.23V to 37V ±4% Max. over Line and Load conditions. |
| Guaranteed 0.5A output current |
| Wide input voltage, up to 40V |
| Thermal shutdown and current limit protection |
| Requires only 4 external components. |
| Shutdown capability (standby mode) |
| Low power standby mode < 200µA typical |
| High efficiency |
| 52kHz fixed frequency internal oscillator |
| Uses standard inductors |
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 (%) | 98 |
| Switching Frequency (kHz) | 52 |
| Input Voltage Range Min | 4 |
| Input Voltage Range Max | 40 |
| Output Current | 500 |
| Temp Range Min | -40 |
| Temp Range Max | 125 |
| Vout Min (V) | 1.23 |
| Quiescent Current (mA) typ | 5 |
| 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 | 8 | PDIP |
| Temp Range | -40C to +85C |
| Packing Media | Tube (50) |
Last 6 months Inventory & Pricing History
Environmental Information
| JEDEC Indicator | e3 |
|---|---|
| ROHS | Compliant |
| China EFUP | Compliant |
| Device Weight (g) | 0.4867 |
| Shipping Weight (kg) | 0.9 |
| Lead Count | 8 |
| Package Type | PDIP |
| Package Width or Size | .300in |
| Soldering Composition | Matte Tin |
Alternative Descriptions
| 52kHz 0.5A Buck Regulator, Vo=3.3V, Vin=max40V, -40+85°C | ECOM |
| Dc/Dc Conv, Buck, 63Khz, Dip-8 | Newark Electronics |
| LM2574 Series 3.3 Vout 0.5 A 52 kHz Step-Down Buck Regulator - DIP-8 | Future Electronics |
| IC: PMIC | TME |
Frequently Asked Questions
Where can I find additional details, specifications and documents for a LM2574-3.3YN?
Additional datasheets, footprints and schematics for LM2574-3.3YN are listed on our Part Details page. You can also find images and similar parts to LM2574-3.3YN on this page.
What pricing and inventory information can I view?
Distributor pricing and stock information is available for LM2574-3.3YN on our Product Comparison page. Access via the 'View Pricing & Stock' button to view LM2574-3.3YN price breaks, MOQs, lead times, inventory and SKUs from distributors.
What category does LM2574-3.3YN fall under?
The LM2574-3.3YN is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators > DC / DC Fixed Switching Regulators.
Can I view similar or alternative parts?
You can view similar parts to LM2574-3.3YN when available in the DC / DC Fixed Switching Regulators range under the specifications section at the bottom of the details page.
Who can I contact for technical support of the product?
Submit any questions directly to the customer support team of the distributor listing the product. For the LM2574-3.3YN you can contact the distributor directly for product support, shipping queries etc.
Is the LM2574-3.3YN RoHS compliant?
Yes. This part has been flagged as RoHS Compliant by Microchip Technology.
Which authorised distributors for LM2574-3.3YN have stock available?
Authorised distributors including Microchip Technology, ECOM, RS, Newark Electronics and Future Electronics have stock available or on a lead time for LM2574-3.3YN.
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