EN5311QI Datasheet PDF - Enpirion

●The EN5311QI is a 1A PowerSoC Synchronous Buck Regulator with integrated inductor. The ultra-low-profile regulator is targeted to applications where board area and profile are critical. It is a complete power conversion solution requiring only two low cost ceramic MLCC caps. Inductor, MOSFETS, PWM and compensation are integrated into a tiny 5mm x 4mm x 1.1mm. Engineered to simplify design and to minimize layout constraints. 4MHz switching frequency and internal type III compensation provides superior transient response. With a 1.1mm profile, the EN5311QI is ideal for space and height constrained applications. A 3-pin VID output voltage selector provides seven pre-programmed output voltages along with an option for external resistor divider. Output voltage can be programmed on-the-fly to provide fast, dynamic voltage scaling.

● Revolutionary integrated inductor

● Very small total solution foot print

● Only two low cost MLCC caps required

● Designed for low noise/low EMI

● Very low ripple voltage, 5mVp-p typical

● High efficiency up to 95%

● <1µA Standby current

● Excellent transient performance

● 3-pin VID output voltage select

● 0.6V to VIN-Vdropout external divider

● 100% Duty cycle capable

● Short-circuit and over-current protection

● UVLO and thermal protection

● 260°C Reflow