(Hong Kong)
Product Summary
The LM2576T-ADJ 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 adjustable from 1.23V to 37V and is capable of driving a 3A load with excellent line and load regulation. The applications of the LM2576T-ADJ 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-ADJ 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℃.
Features
LM2576T-ADJ 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)Requires only 4 external components; (6)52kHz fixed frequency internal oscillator; (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.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LM2576T-ADJ |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-ADJ/LB02 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-ADJ/NOPB |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers 3A STEP-DOWN VLTG REG |
Data Sheet |
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LM2576T-ADJ/LF03 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-ADJ/LF02 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-ADJ/LB03 |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM2576T-ADJG |
ON Semiconductor |
Switching Converters, Regulators & Controllers 3A 1.23-37V ADJ Buck PWM |
Data Sheet |
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