LM2574HVMX-3.3

voltage regulator, 14-SOIC, 1.23 V ~ 57 V, 52kHz, 500mA, RoHS Compliant

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Price:: US $1.00~1,000,000.00 / piece [Get Latest Price]

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PartNumber:: LM2574HVMX-3.3

Brand:: National Semiconductor - NS | Pack: SOP | D/C: 10+

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Products Upload time: 2012-05-08

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Product Summary

The LM2574HVMX-3.3 is a simple switcher 0.5A step-down voltage regulator. The LM2574HVMX-3.3 regulator is a monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5A load with excellent line and load regulation. The LM2574HVMX-3.3 is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. Requiring a minimum number of external components, the LM2574HVMX-3.3 is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The applications of the device include Simple high-efficiency step-down (buck) regulator, Efficient pre-regulator for linear regulators, On-card switching regulators and Positive to negative converter (Buck-Boost).

Parametrics

LM2574HVMX-3.3 absolute maximum ratings: (1)Maximum Supply Voltage: 63V; (2)ON /OFF Pin Input Voltage: -0.3V ≤ V ≤ +VIN; (3)Output Voltage to Ground(Steady State): -1V; (4)Minimum ESD Rating (C = 100 pF, R = 1.5 kW): 2kV; (5)Storage Temperature Range: -65℃ to +150℃; (6)Lead Temperature (Soldering, 10 seconds): 260℃; (7)Maximum Junction Temperature: 150℃; (8)Power Dissipation: Internally Limited.

Features

LM2574HVMX-3.3 features: (1)3.3V, 5V, 12V, 15V, and adjustable output versions; (2)Adjustable versiooutput voltage range, 1.23V to 37V (57V for HV version) ±4% max over line and load conditions; (3)Guaranteed 0.5A output current; (4)Wide input voltage range, 40V, up to 60V for HV version; (5)Requires only 4 external components; (6)52 kHz fixed frequency internal oscillator; (7)TTL shutdowcapability, low power standby mode; (8)High efficiency; (9)Uses readily available standard inductors; (10)Thermal shutdowand current limit protection.