LM2575-12WU More Semiconductors - ICs by Microchip Technology

1A Step-Down SMPS Regulator

Status: Active
Series: LM2575
RoHS: Compliant
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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.

Prices starting from US$1.27


Distributor Starting From Stock
Logo for Microchip Technology Microchip Technology US$1.27
2,750
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Logo for Future Electronics Future Electronics US$1.43
-
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Logo for Avnet America Avnet America US$1.75
-
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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 5 | DDPAK
Temp Range -40C to +85C
Packing Media Tube (50)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 1.4625
Shipping Weight (kg) 2.52
Lead Count 5
Package Type DDPAK
Soldering Composition Matte Tin

Alternative Descriptions

1A Step-Down Smps Regulator 5 Ddpak Tube Rohs Compliant: Yes |Microchip LM2575-12WU | Newark Electronics
LM2575 Series 12 V 1 A 52 KHz High-Efficiency Step-Down Buck Regulator -TO-263-5 | Future Electronics
1A STEP-DOWN SMPS REGULATOR | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a LM2575-12WU?

Additional datasheets, footprints and schematics for LM2575-12WU are listed on our Part Details page. You can also find images and similar parts to LM2575-12WU on this page.

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What category does LM2575-12WU fall under?

The LM2575-12WU is listed under Semiconductors - ICs > More Semiconductors - ICs.

Can I view similar or alternative parts?

You can view similar parts to LM2575-12WU when available in the More Semiconductors - ICs range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the LM2575-12WU you can contact the distributor directly for product support, shipping queries etc.

Is the LM2575-12WU RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for LM2575-12WU have stock available?

Authorised distributors including Microchip Technology, Newark Electronics, Future Electronics and Avnet America have stock available or on a lead time for LM2575-12WU.

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