LM2595SX-12

LM2595SX-12 Description

LM2595SX-12 Manufacturer

LM2595SX-12 Datasheet (PDF)

LM2595SX-12 Price & Availability

LM2595SX-12 Features

• 3.3V, 5V, 12V, and adjustable output versions
• Adjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditions
• Available in TO-220 and TO-263 (surface mount) packages
• Guaranteed 1A output load current
• Input voltage range up to 40V
• Requires only 4 external components
• Excellent line and load regulation specifications
• 150 kHz fixed frequency internal oscillator
• TTL shutdown capability
• Low power standby mode, I_Q typically 85 µA
• High efficiency
• Uses readily available standard inductors
• Thermal shutdown and current limit protection

LM2595SX-12 Description

The LM2595 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 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 LM2595 series operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 5-lead TO-220 package with several different lead bend options, and a 5-lead TO-263 surface mount package. Typically, for output voltages less than 12V, and ambient temperatures less than 50°C, no heat sink is required.

A standard series of inductors are available from several different manufacturers optimized for use with the LM2595 series. This feature greatly simplifies the design of switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 85 µA stand-by current. Self protection features include a two stage frequency reducing current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

LM2595SX-12 Parameters

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