onsemi FAN5307SX

Switching Regulator, Current-mode, 0.7A, 1200kHz Switching Freq-Max, PDSO5

Conv DC-DC 2.5V to 5.5V Synchronous Step Down Single-Out 0.7V to 5.5V 0.3A 5-Pin SOT-23 T/R

Buck Yes 1MHz Adjustable 1 4.4V 700mV 5.5V 2.5V SOT-23-5 SMD mount

The FAN5307, a high efficiency low noise synchronous PWM current mode and Pulse Skip (Power Save) mode DC-DC converter is designed for battery-powered applications. It provides up to 300mA of output current over a wide input range from 2.5V to 5.5V. The output voltage can be either internally fixed or externally adjustable over a wide range of 0.7V to 5.5V by an external voltage divider. Custom output voltages are also available. Contact a Fairchild sales representative for customized output voltage options. At moderate and light loads pulse skipping modulation is used. Dynamic voltage positioning is applied, and the output voltage is shifted 0.8% above nominal value for increased headroom during load transients. At higher loads the system automatically switches to current mode PWM control, operating at 1 MHz. A current mode control loop with fast transient response ensures excellent line and load regulation Product Highlights: 95% Efficiency, Synchronous Operation Adjustable Output Voltage Option from 0.7V to VIN 2.5V to 5.5V Input Voltage Range Customized Fixed Output Voltage Options Up to 300mA Output Current Fixed Frequency 1MHz PWM Operation High Efficiency Power Save Mode 100% Duty Cycle Low Dropout Operation Soft Start Dynamic Output Voltage Positioning 15A Quiescent Current Excellent Load Transient Response 5-Lead SOT-23 Package 6-Lead MLP 3x3mm Package