• - 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 TPS720xx family of dual rail, low-dropout linear regulators (LDOs) offers outstanding ac performance (PSRR, load and line transient response), while consuming a very low quiescent current of 38µA.

The V_BIAS rail that powers the control circuit of the LDO draws very low current (on the order of the quiescent current of the LDO) and can be connected to any power supply that is equal to or greater than 1.4V above the output voltage. The main power path is through V_IN, which can be a lower voltage than V_BIAS; it can be as low as V_OUT + V_DO, increasing the efficiency of the solution in many power-sensitive applications. For example, V_IN can be an output of a high-efficiency, dc-dc step-down regulator.

The TPS720xx supports a novel feature in which the output of the LDO regulates under light loads when the IN pin is left floating.

特性

• 350mA High-Performance LDO
• Low Quiescent Current: 38µA
• Excellent Load Transient Response:
  ±15mV for I_LOAD = 0mA to 350mA in 1µs
• Excellent Line Transient Response:
  V_OUT = ±2mV for V_BIAS = ±600mV in 1µs
  V_OUT = ±200µV for V_IN = ±400mV in 1µs
• Low Noise: 48µV_RMS (10Hz to 100kHz)
• 80dB V_IN PSRR (10Hz to 10kHz)
• 70dB V_BIAS PSRR (10Hz to 10kHz)
• Fast Start-Up Time: 140µs
• Built-In Soft-Start with Monotonic V_OUT Rise and Startup Current Limited to 100mA + I_LOAD
• Over-Current and Thermal Protection
• Low Dropout: 110mV at I_LOAD = 350mA
• Stable with 2.2µF Output Capacitor
• Available in 1,33mm x 0,96mm WCSP-5 and 2mm x 2mm SON-6 Packages
• APPLICATIONS
  • Digital Cameras
  • Cellular Camera Phones
  • Wireless LAN
  • Handheld Products