TPS630250RNCT

The TPS630250RNCT is a high-efficiency Buck-boost Converter suitable for application where the input voltage is higher or lower than the output. Output currents can go as high as 2A in boost mode and as high as 4A in buck mode. The maximum average current in the switches is limited to a typical value of 4A. It regulates the output voltage over the complete input voltage range by automatically switching between buck or boost mode depending on the input voltage ensuring a seamless transition between modes. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain highest efficiency. At low load currents, the converter enters power save mode to maintain high efficiency over the complete load current range. There is a PFM/PWM pin that allows the user to choose between automatic PFM/PWM mode operation and forced PWM operation. During PWM mode a fixed-frequency of typically 2.5MHz is used.

• Adjustable and fixed output voltage
• Integrated soft-start function
• Power save mode
• True shutdown function
• Output capacitor discharge function
• Over-temperature protection and overcurrent protection
• Efficiency up to 95% in buck or boost mode and up to 97% when VIN=VOUT
• 35µA Operating quiescent current
• Green product and no Sb/Br