The FP6715 is a high efficiency, fixed frequency 550KHz, current mode PWM boost DC/DC converter which could operate battery such as input voltage down to 1.9V. The converter output voltage can be adjusted to a maximum of 5.25V by an external resistor divider. Besides the converter includes a 0.08Ω N-channel MOSFET switch and 0.085Ω P-channel synchronous rectifier. So no external Schottky diode is required and could get better efficiency near 93%.

The converter is based on a fixed frequency, current mode, pulse-width-modulation PWM controller that goes automatically into PSM mode at light load.

When converter operation into discontinuous mode, the internal anti-ringing switch will reduce interference and radiated electromagnetic energy.

The FP6715 is available in a space-saving SOT-23-6 package for portable application.

• Wide Input Voltage Range: 1.9V to 5.25V
• VOUT Off True shutdown
• High Efficiency up to 93%
• Low RDS(ON) Integrated Power MOSFET
  NMOS 80mΩ / PMOS 85mΩ
• Fixed 550KHz Switching Frequency
• Low-Power Mode for Light Load Conditions
• ±2.0% Voltage Reference Accuracy
• Short Circuit Protection
• Low Quiescent Current
• Fast Transient Response
• Built-In Soft Start Function
• Over-Temperature Protection with Auto Recovery
• Output Overvoltage Protection
• Cycle-by-Cycle Current Limit
• Short Circuit Protection
• Space-Saving SOT-23-6 Package