LM2576-5.0

LM2576-5.0, buck voltage regulator, TO-263, 52 kHz, 3A, 45V, 2KV

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Price:: US $0.18~0.32 / piece [Get Latest Price]

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PartNumber:: LM2576-5.0

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

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Products Upload time: 2012-04-13

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Part Number:LM2576-5.0
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Product Summary

The LM2576-5.0 is a 52 kHz simple 3A buck voltage regulator. The LM2576-5.0 provides all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, or 12V fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 3A load with excellent line and load regulation. The applications of the LM2576-5.0 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

LM2576-5.0 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 Dissipation: Internally Limited; (5)Storage Temperature Range: –65℃ to +150℃; (6)Minimum ESD Rating C = 100pF, R = 1.5kW: 2 kV; (7) FB Pin: 1kV; (8) Lead Temperature (soldering, 10 sec.): 260℃; (9) Maximum Junction Temperature: 150℃.

Features

LM2576-5.0 features: (1)3.3V, 5V, 12V, and adjustable output versions; (2) Voltage over specified line and load conditions: Fixed version: ±3% max. Output voltage, Adjustable version: ±2% max. feedback voltage; (3)Guaranteed 3A output current; (4)Wide input voltage range: 4V to 40V; (5)Wide output voltage range: 1.23V to 37V; (6)Requires only 4 external components; (7)52kHz fixed frequency internal oscillator; (8)Low power standby mode IQ typically＜200mA; (9)80% efficiency (adjustable version typically＞80%); (10)Uses readily available standard inductors; (11) Thermal shutdown and current limit protection; (12)100% electrical thermal limit burn-in.