• - 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 TPS40222 is a fixed-frequency, current-mode, non-synchronous buck converter optimized for applications powered by a 5-V distributed source. With internally determined operating frequency, soft-start time, and control loop compensation, the TPS40222 provides many features with a minimum of external components.

The TPS40222 operates at 1.25 MHz and supports up to 1.6-A output loads. The output voltage can be programmed to as low as 0.8 V. The TPS40222 utilizes pulse-by-pulse current limit as well as frequency foldback to protect the converter during a catastrophic short circuited output condition.

特性

• Input Voltage Range 4.5 V_DC to 8 V_DC
• Output Voltage (0.8 V to 90% V_IN)
• 0 A to 1.6 A Current Capability
• Fixed 1.25-MHz Switching Frequency
• Reference 0.8 V ±1%
• Internal 250 m N-Channel MOSFET Switch
• Current Mode Control with Internal Slope Compensation
• Internal Soft-Start
• Internal Loop Compensation
• Short Circuit Protection
• Thermal Shutdown
• High Efficiency Up to 92%
• Small 3 mm × 3 mm SON Package
• APPLICATIONS
  • Disk Drives
  • Set Top Box
  • Point of Load Power
  • ASIC Power Supplies