DataSheeT enpirion power solutions EP5388QI 800mA PowerSoC Step-Down DC-DC Switching Converter with Integrated Inductor DESCRIPTION FEATURES The EP5388QI is a synchronous buck converter with 3mm x 3mm x 1.1mm QFN package integrated Inductor, PWM controller, MOSFETS, and Only two low cost MLCC caps required Compensation providing the smallest possible 4 MHz switching frequency solution size. The EP5388QI requires only two small MLCC capacitors to make a complete solution. High efficiency, up to 94% Integration of the inductor greatly simplifies design, Up to 800mA continuous output current contains noise, reduces part count, and reduces Wide 2.4V to 5.5V input range solution footprint. Low output ripple ensures V Range: 0.6V to V 0.5V OUT IN compatibility with RF systems. 3-Pin VID output voltage programming The EP5388QI operates at a switching frequency of 4 100% duty cycle capable MHz, enabling this unprecedented level of integration Less than 1 A standby current and small external components. Type III voltage Low V ripple for RF compatibility OUT mode control is used to provide high noise immunity and wide control loop bandwidth. Short circuit and over current protection UVLO and thermal protection The small footprint makes this part ideal for space RoHS compliant MSL 3 260C reflow constrained portable applications. Shutdown current of <1uA extends battery life Output voltage level is APPLICATIONS programmed via a 3-pin VID selector providing seven pre-programmed output voltages along with an Noise sensitive RF applications option for external resistor divider. Area constrained applications Wireless data applications All Enpirion products are RoHS compliant and lead- Portable gaming devices free manufacturing environment compatible. Personal Media Players Advanced Mobile Processors, DSP, IO, Memory, Video, Multimedia Engines ENABLE V Sense V OUT V IN V in V out 4.7F 47F EP5388QI 0603 1206 V FB VS0 Voltage V S1 Select V S2 GND Figure 1. Integrated Inductor Technology Figure 2. Typical Application Schematic Page 1 Datasheet Intel Enpirion Power Solutions: EP5388QI ORDERING INFORMATION Part Number Package Markings T Rating Package Description J EP5388QI ABXX -40C to +125C 16-pin (3mm x 3mm x 1.1mm) QFN EP5388QI-E QFN Evaluation Board Packing and Marking Information: www.intel.com/support/reliability/packing/rel-packing-and-marking.html PIN FUNCTIONS 1 14 NC(SW) VIN PGND 2 13 ENABLE 3 12 PGND VS0 4 11 VFB VS1 5 10 VSENSE VS2 AGND 6 9 NC Figure 3. EP5388QI Pin Out Diagram (Top View) NOTE A: NC pins are not to be electrically connected to each other or to any external signal, ground or voltage. However, they must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage. NOTE B: White dot on top left is pin 1 indicator on top of the device package. Page 2 7 16 NC(SW) VOUT 8 15 NC(SW) VOUT