The TL2575 and TL2575HV greatly simplify the design of switching power supplies by conveniently providing all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. Accepting a wide input voltage range of up to 60 V (HV version) and available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustable-output version, the TL2575 and TL2575HV have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation.

Features of TL2575-05I Simple Step-Down Switching Voltage Regulators:

• Fixed 3.3-V, 5-V, 12-V, and 15-V Options With ±5% Regulation (Max) Over Line, Load.
• Adjustable Option With a Range of 1.23 V to 37 V (57 V for HV Version) and ±4% Regulation (Max) Over Line, Load.
• Specified 1-A Output Current.
• Wide Input Voltage Range…4.75 V to 40 V.
• (60 V for HV Version).
• 52-kHz (Type) Fixed-Frequency Internal Oscillator.
• TTL Shutdown Capability With 50-µA (Type) Standby Current.
• High Efficiency…as High as 88% (Type).
• Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting.

Applications of TL2575-05I Simple Step-Down Switching Voltage Regulators:

• Simple High-Efficiency Step-Down(Buck).
• Regulators.
• Pre-Regulators for Linear Regulators.
• On-Card Switching Regulators.
• Positive-to-Negative Converters(Buck-Boost).

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