The TL2575HV-33 and TL2575HV-05 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 and available in fixed output voltages of 3.3 V or 5 V, the TL2575HV-33 and TL2575HV-05 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 pin.

The TL2575HV-33 and TL2575HV-05 represent superior alternatives to popular three-terminal linear regulators. Due to their high efficiency, the devices significantly reduce the size of the heat sink and, in many cases, no heat sink is required. Optimized for use with standard series of inductors available from several different manufacturers, the TL2575HV-33 and TL2575HV-05 greatly simplify the design of switch-mode power supplies by requiring a minimal addition of only four to six external components for operation.

The TL2575HV-33 and TL2575HV-05 are characterized for operation over the virtual junction temperature range of –40°C to 125°C.

• Fixed 3.3-V and 5-V Options With ±5% Regulation (Max) Over Line, Load, and Temperature Conditions
• Specified 1-A Output Current
• Wide Input Voltage Range…4.75 V to 60 V
• Require Only Four External Components (Fixed Versions) and Use Readily Available Standard Inductors
• 52-kHz (Typ) Fixed-Frequency Internal Oscillator
• TTL Shutdown Capability With 50-mA (Typ) Standby Current
• High Efficiency…as High as 88% (Typ)
• Thermal Shutdown and Current-Limit Protection With Cycle-by-Cycle Current Limiting
• APPLICATIONS
  • Simple High-Efficiency Step-Down (Buck) Regulators
  • Pre-Regulators for Linear Regulators
  • On-Card Switching Regulators
  • Positive-to-Negative Converters (Buck-Boost)

• Vin (Min) (V)
• 4.75
• Vin (Max) (V)
• 60
• Vout (Min) (V)
• 3.3
• Vout (Max) (V)
• 3.3
• Iout (Max) (A)
• 1
• Iq (Typ) (uA)
• 5000
• Switching frequency (Min) (kHz)
• 47
• Switching frequency (Max) (kHz)
• 58
• Features
• Enable, Over Current Protection
• Rating
• Automotive
• Regulated outputs (#)
• 1
• Control mode
• Voltage Mode
• Duty cycle (Max) (%)
• 98

TL2575HV-33-Q1的完整型号有：TL2575HV-33QKTTRQ1，以下是这些产品的关键参数及官网采购报价：

TL2575HV-33QKTTRQ1，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网TL2575HV-33QKTTRQ1的批量USD价格：1.546（1000+）

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