• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

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.

特性

• 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)