• - 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 TPS61240-Q1 device is a high efficient synchronous step up DC-DC converter optimized for products powered by either a three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-Polymer battery. The TPS6124x supports output currents up to 450mA. The TPS61240-Q1 has an input valley current limit of 500mA.

With an input voltage range of 2.3V to 5.5V the device supports batteries with extended voltage range and are ideal to power portable applications like mobile phones and other portable equipment. The TPS6124x boost converter is based on a quasi-constant on-time valley current mode control scheme.

The TPS6124x presents a high impedance at the V_OUT pin when shut down. This allows for use in applications that require the regulated output bus to be driven by another supply while the TPS6124x is shut down.

特性

• Qualified for Automotive Applications
• Efficiency > 90% at Nominal Operating Conditions
• Total DC Output Voltage Accuracy 5.0V±2%
• Typical 30 µA Quiescent Current
• Best in Class Line and Load Transient
• Wide V_IN Range From 2.3V to 5.5V
• Output current up to 450mA
• Automatic PFM/PWM Mode transition
• Low Ripple Power Save Mode for Improved Efficiency at Light Loads
• Internal Softstart, 250µs typical Start-Up time
• 3.5MHz Typical Operating Frequency
• Load Disconnect During Shutdown
• Current Overload and Thermal Shutdown Protection
• Three Surface-Mount External Components Required
  (One MLCC Inductor, Two Ceramic Capacitors)
• Total Solution Size <13 mm²
• Available in a 2×2-SON Package