(China (Mainland))
Product Summary
The LM2576T-ADJ is monolithic integrated circuit that provides all the active functions for a step-down (buck) switching regulator, capable of driving 3A load withexcellent line and load regulation. The LM2576T-ADJ is avail-able in fixed output voltages of 3.3V, 5V, 12V, 15V, and adjustable output version. The The LM2576T-ADJ offers a high effiency replacement for popular three-terminal adjustable linear regulators. Applications of the LM2576T-ADJ include: simple high-effiency 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 maximum absolute ratings: (1) ON/OFF Pin Input Voltage: -0.3≤V≤+40V; (2) Output Voltage to Ground (Steady State) : -1V; (3) Power Dissipation: -65°C to +150°C; (4) Storage Temperature Range: -65°C to +150°C; (5) Minimum ESD Ratings(C=100pF, R=1.5kΩ) : 2kV; (6) FB Pin (Pin 4); (7) Lead Temperature( Soldering 10 sec.) : 260°C.
Features
LM2576T-ADJ features: (1) adjustable output, reference voltage ±2% max over line and load conditions; (2) Guaranteed 3A output current; (3) Wide input voltage range, 4V to 40V; (4) Requires only 6 external components; (5) 52kHz fixed frequencey internal oscillator; (6) Low power standby mode, Iq typically＜200μA; (7) Efficiency typically over 80%; (8) Users 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-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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