LM2576T-3.3/LB03

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LM2576T-3.3/LB03 is a type DC/DC switching regulator and is a member of the open-frame family of regulators. It is a non-linear voltage-sensing device that uses a feedback loop to regulate the output voltage and is ideal for applications requiring a wide input voltage range and adjustable output voltage. The LM2576T-3.3/LB03 operates over a wide VIN range of 5 to 60V and offers an adjustable output voltage of 3.3V.The LM2576T-3.3/LB03 provides a low 80Ω internal switch resistance along with a wide range of operating frequency, allowing for both a high switching frequency for low component size and a high frequency for a more efficient operation. It also offers excellent line and load regulation, with a typical output accuracy of ±1%. In addition, its low current of 30 mA and peak current of 1A make it suitable for a variety of applications.The LM2576T-3.3/LB03 is a monolithic integrated circuit (IC) with an internal temperature-compensated reference and error amplifier, control comparator, pass transistor, and current limit components. The control circuit compares the output voltage to a voltage-setting reference and modulates the pass transistor to produce an output voltage that is regulated even with a wide variation in input voltage and load current.The LM2576T-3.3/LB03 has an adjustable output voltage, a wide input range of 5 to 60V, an output voltage accuracy of ±1%, and an internal compensation circuitry to reduce external component requirements. It also offers a programmable/adjustable switching frequency, adjustable soft-start time, overcurrent/overvoltage protection, and short-circuit protection. In addition, it has an internal overvoltage protection feature that shuts down the device when the output is close to the maximum rating. The device is capable of a maximum output current of 1A and a maximum output voltage of 3.3V.In summary, the LM2576T-3.3/LB03 is a DC/DC switching regulator IC that can operate over a wide range of input voltage and provide a regulated output voltage with a wide range of programmable/adjustable frequency and adjustable soft-start time. It is suitable for a variety of applications, including automotive, test equipment, power supplies, and general purpose industrial uses. The device has excellent line and load regulation, good efficiency, and offers overcurrent/overvoltage protection.

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