LM2576SX

simple switcher, 3A, step-down voltage regulator, low power standby mode, 52 kHz fixed frequency

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Price:: US $1.22~1.28 / piece [Get Latest Price]

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	US $1.22~1.28

PartNumber:: LM2576SX

Brand:: National Semiconductor - NS | Pack: TO | D/C: 11+

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Products Upload time: 2012-01-12

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Part Number:LM2576SX
US $1.22 - 1.28
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Product Summary

The LM2576SX regulator is monolithic integrated circuit 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 version. Requiring a minimum number of external component, the regulator is simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2576SX 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.

Parametrics

LM2576SX absolute maximum ratings: (1)Maximum Supply Voltage ON /OFF Pin Input Voltage: -0.3V ≤ V ≤ +VIN; (2)Output Voltage to Ground(Steady State): -1V; (3)Power Dissipation: Internally Limited; (4)Storage Temperature Range: -65℃ to +150℃; (5)Maximum Junction Temperature: 150℃; (6)Minimum ESD Rating(C = 100 pF, R = 1.5 kΩ): 2kV; (7)Lead Temperature(Soldering, 10 Seconds): 260℃.

Features

LM2576SX 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 3A 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; (11)P+ Product Enhancement tested.