(Hong Kong)
Product Summary
The LM2576T-12 is a step-down voltage regulator, provides all the active functions for a step-down voltage regulator. This device features a 12V output capable of driving a 3A load with excellent line and load. The applications of the LM2576T-12 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-12 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-12 features: (1)12V output, ± 3% max over line and load conditions; (2)Guaranteed 3A output current; (3)Wide input voltage range, 14V to 40V; (4)Requries only 4 external components; (5)52kHz fixed frequency inrernal oscailltor; (6)Low power standby mode, IQ typically ＜200μA; (7)88% efficiency; (8)Uses readily available standard inductors; (9)Thermal shutdown and current limit protection; (10)100% electrical thermal limit burn-in.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LM2576T-12 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-12/LB03 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-12/NOPB |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers 3A STEP-DOWN VLTG REG |
Data Sheet |
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LM2576T-12/LF03 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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