Description
The MIK2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output versions. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The MIK2576 series offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink is required. A standard series of inductors optimized for use with the MIK2576 are available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ± 4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included, featuring 50μA (typical) standby current. The output switch includes cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault conditions.
Note: The MIK2576HV is not produced yet.

Features
*3.3V, 5V, 12V, 15V, and adjustable output versions
*Adjustable version output voltage range
*1.23V to 37V (57V for HV version) ±4% max over line and load conditions
*Guaranteed 3A output current
*Wide input voltage range, 40V up to 60V for HV version
*Requires only 4 external components
*52 kHz fixed frequency oscillator
*TTL shutdown capability, low power standby mode
*High efficiency
*Uses readily available standard inductors
*Thermal shutdown and current limit protection

Applications
*Simple high-efficiency step-down (buck) regulator
*Efficient pre-regulator for linear regulators
*On-card switching regulators
*Positive to negative converter (Buck-Boost)

MIK2576HVS-33, MIK2576HVS-50, MIK2576HVS-12, MIK2576HVS-15

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GENERAL DESCRIPTION
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 3A 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 LM2596 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.
A standard series of inductors are available from several different manufacturers optimized for use with the LM2596 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 80 μA standby 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.

FEATURES
*3.3V, 5V, 12V, and adjustable output versions
*Adjustable version output voltage range, 1.2Vto 37V
*±4% max over line and load conditions
*Available in TO-220 and TO-263 packages
*Guaranteed 3A 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, IQ typically 80 μA
*High efficiency
*Uses readily available standard inductors
*Thermal shutdown and current limit protection

APPLICATIONS
*Simple high-efficiency step-down (buck) regulator
*On-card switching regulators
*Positive to negative converter

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