NCP6343

Synchronous Buck Converter - Step Down 3.0 A NCP6343 The NCP6343 is a synchronous buck converter optimized to supply the different sub systems of portable applications powered by one cell Li−Ion or three cell Alkaline/NiCd/NiMH batteries. The device is able to deliver up to 3.0 A, with programmable output voltage from 0.6 V to 1.4 V. It can share the same output rail with another DCDC and works as a transient load helper. Operation at a 3 MHz switching frequency allows the use of small components. Synchronous rectification and automatic PWM/PFM transitions improve overall solution efficiency. The NCP6343 is in a space saving, low profile 1.99 x 1.34 mm CSP−15 package. Features Input Voltage Range from 2.3 V to 5.5 V: Battery and 5 V Rail Powered Applications Programmable Output Voltage: 0.6 V to 1.4 V in 6.25 mV Steps Modular Output Stage Drive Strength for Increased Efficiency Depending on the Output Current 3 MHz Switching Frequency with On Chip Oscillator Uses 470 nH Inductor and 22 mF Capacitors for Optimized Footprint and Solution Thickness PFM/PWM Operation for Optimum Increased Efficiency Ultra Low 0.8 mA Off Mode Current Low 35 mA Quiescent Current I2C Control Interface with Interrupt and Dynamic Voltage Scaling Support Thermal Protections and Temperature Management Transient Load Helper: Share the Same Rail with Another DCDC Small 1.99 x 1.34 mm / 0.4 mm Pitch CSP Package These are Pb−Free Devices www.onsemi.com MARKING DIAGRAM WLCSP15 ...