LM2596

• New product available: LMR33630 36-V, 3-A, 400-kHz synchronous converter
• 3.3-V, 5-V, 12-V, and adjustable output versions
• Adjustable version output voltage range: 1.2-V to 37-V ±4% maximum over line and load conditions
• Available in TO-220 and TO-263 packages
• 3-A output load current
• Input voltage range up to 40 V
• Requires only four external components
• Excellent line and load regulation specifications
• 150-kHz Fixed-frequency internal oscillator
• TTL shutdown capability
• Low power standby mode, I_Q, typically 80 µA
• High efficiency
• Uses readily available standard inductors
• Thermal shutdown and current-limit protection
• Create a custom design using the LM2596 with the WEBENCH Power Designer

The LM2596 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, and a fixed-frequency oscillator.

The LM2596 series operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators. Available in a standard 5-pin TO-220 package with several different lead bend options, and a 5-pin TO-263 surface mount package.

The new product, LMR33630, offers reduced BOM cost, higher efficiency, and an 85% reduction in solution size among many other features. Start WEBENCH Design with the LMR33630.