TL2575

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TL2575, TL2575HV SLVS638C – JANUARY 2006 – REVISED NOVEMBER 2014 TL2575, TL2575HV 1-A Simple Step-Down Switching Voltage Regulators 1 Features 1 Fixed 3.3-V, 5-V, 12-V, and 15-V Options with ±5% Regulation (Max) Over Line, Load, and Temperature Conditions Adjustable Option With a Range of 1.23 V to 37 V (57 V for HV Version) and ±4% Regulation (Max) Over Line, Load, and Temperature Conditions Specified 1-A Output Current Wide Input Voltage Range – 4.75 V to 40 V (60 V for HV Version) Requires Only Four External Components (Fixed Versions) and Uses Readily Available Standard Inductors 52-kHz (Typ) Fixed-Frequency Internal Oscillator TTL Shutdown Capability With 50-μA (Typ) Standby Current High Efficiency – As High as 88% (Typ) Thermal Shutdown and Current-Limit Protection with Cycle-by-Cycle Current Limiting 2 Applications Simple High-Efficiency Step-Down (Buck) Regulators Pre-Regulators for Linear Regulators On-Card Switching Regulators Positive-to-Negative Converters (Buck-Boost) 3 Description The TL2575 and TL2575HV devices provide all the active functions needed for a step-down (buck) switching regulator in an integrated circuit. They require four to six external components for operation. They accept a wide input-voltage range of up to 60 V (TL2575-HV) and are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, or an adjustableoutput version. The T...