Description

The LM2575WU is a DC switching regulator that is included in the Bay Linear series of electronic components. The LM2575WU contains fixed and adjustable switching voltage regulators that require a minimum of external components. All the necessary circuitry to build a buck-switching regulator is integrated into the LM2575WU.

This model of electronic component is available in 3.3V, 5V, 12V & 15V fixed voltages, or the adjustable version with an output voltage range from 1.23V to 37V. The guaranteed accuracy for specified input and load conditions is ±4%.

Specifications and features

The LM2575WU has the following specifications and features:

• Guaranteed 1A output current
• High efficiency
• Wide input voltage, up to 40V
• 3.3V, 5V, 12V, 15V and adjustable output versions
• Thermal shutdown and current limit protection
• Requires only 4 external components
• Low power standby mode < 200µA typical
• Shutdown capability (standby mode)
• 52kHz fixed frequency internal oscillator
• Uses standard inductors
• Pin-to-pin compatible with LM2575

Application Scenarios

The LM2575WU can be used in the following application scenarios:

• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter (Buck-Boost)
• Simple high-efficiency step-down (Buck)
• Portable instruments

Comparison

• The LM2575WU has a high efficiency
• It has a wide input voltage range
• Requires minimal external components
• Pin-to-pin compatible with LM2575

• Accuracy is guaranteed for specified input and load conditions only