LM2576T

LM2576T, 3A, 45V, TO220-5, step-down voltage regulator

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Price:: US $0.18~0.20 / piece [Get Latest Price]

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	US $0.18~0.20

PartNumber:: LM2576T

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

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-05-21

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Product Summary

The LM2576T is a step-down voltage regulator, provides all the active functions for a step-down(buck) voltage regulator. This device features an out-put voltage which is asjustable from 1.23V to 37V and is capable of driving a 3A load with excellent line and load regulation. The applications of the LM2576T include simple high-efficiency step-down (buck) regulator, efficient pre-regulator for linear regulators, on-card switching regulators, positive to negative converter (inverting, buck-boost), isolated flyback converter using minimum number of external components, negative boost converter.

Parametrics

LM2576T absolute maximum ratings: (1)Maximum supply voltage: 45V; (2)ON/OFF Pin input voltage: －0.3V≤V≤+40V; (3)Output voltage to ground(steady state): －1V; (4)Power Disspation: internally limited; (5)Storage temperature range: －65℃ to +150℃.

Features

LM2576T features: (1)Adjustable output, reference ±2% max over line and load conditions; (2)Guaranteed 3A output current; (3)Wide input voltage range, 4V to 40V; (4)Wide output voltage range, 1.23V to 37V; (5)Requries only 4 external components; (6)52kHz fixed frequency inrernal oscailltor; (7)Low power standby mode, IQ typically ＜200μA; (8)Efficiency typically over 80%; (9)Uses readily available standard inductors; (10)Thermal shutdown and current limit protection; (11)100% electrical thermal limit burn-in.