TI TL2575-05IKTTR

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 adjustable output version. The TL2575 and TL2575HV devices have an integrated switch capable of delivering 1 A of load current, with excellent line and load regulation. The device also offers internal frequency compensation, a fixed-frequency oscillator, cycle-by-cycle current limiting, and thermal shutdown. In addition, a manual shutdown is available via an external ON/OFF (overline) pin.

• 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

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