(Hong Kong)
Product Summary
The LM2591HVT-3.3/NOPB is a regulator. The LM2591HVT-3.3/NOPB is monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. The LM2591HVT-3.3/NOPB is available in fixed output voltages of 3.3V, 5V, 12V, 15V, and an adjustable output version. Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation and a fixed-frequency oscillator. The LM2591HVT-3.3/NOPB offers a high-efficiency replacement for popular three-terminal linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. A standard series of inductors optimized for use with the LM2591HVT-3.3/NOPB is available from several different manufacturers. This feature greatly simplifies the design of switch-mode power supplies.
Parametrics
LM2576HVT-12/NOPB absolute maxing ratings: (1)Maximum Supply Voltage: 63V; (2)ON/OFF Pin Input Voltage: 0.3V≤V≤+VIN; (3)Output Voltage to Ground(Steady State): -1V; (4)Power Dissipation: Internally Limited; (5)Storage Temperature Range: -65℃ to +150℃; (6)Maximum Junction Temperature: 150℃; (7)Minimum ESD Rating(C=100pF, R=1.5kΩ): 2kV; (8)Lead Temperature(Soldering, 10 Seconds): 260℃.
Features
LM2576HVT-12/NOPB features: (1)3.3V, 5V, and adjustable output versions; (2)Adjustable version output voltage range, 1.23V to 57V ±4% max over line and load conditions; (3)Guaranteed 1A output current; (4)Wide input voltage range, 40V up to 60V for HV version; (5)Requires only 4 external components; (6)150 kHz fixed frequency internal oscillator; (7)Low power standby mode, IQ typically 90 μA; (8)High efficiency; (9)Uses readily available standard inductors; (10)Thermal shutdown and current limit protection.
Diagrams
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 LM2591HVT-3.3/NOPB |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM250 |
Other |
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Data Sheet |
Negotiable |
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National Semiconductor (TI) |
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Data Sheet |
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LM25005MH |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM25005MH/NOPB |
National Semiconductor (TI) |
DC/DC Switching Regulators 42V,2.5A STEP-DOWN SWITCHING REG |
Data Sheet |
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LM25005MHX |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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LM25005MHX/NOPB |
National Semiconductor (TI) |
Switching Converters, Regulators & Controllers |
Data Sheet |
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