Enpirion Power Datasheet EP5357xUI 600mA PowerSoC Synchronous Buck Regulator With Integrated Inductor Description Features The EP5357xUI (x = L or H) is a 600mA Integrated Inductor Technology PowerSoC. The EP5357xUI integrates MOSFET 2.5mm x 2.25mm x 1.1mm package switches, control, compensation, and the 2 Total Solution Footprint 14mm magnetics in an advanced 2.5mm x 2.25mm QFN Package. Low V ripple for RF compatibility OUT Integrated magnetics enables a tiny solution High efficiency, up to 93% footprint, low output ripple, low part-count, and 600mA continuous output current high reliability, while maintaining high efficiency. 55A quiescent current The complete solution can be implemented in as 2 little as 14mm . Less than 1A standby current A proprietary light load mode (LLM) provides high 5 MHz switching frequency efficiency in light load conditions. 3 pin VID for glitch free voltage scaling The EP5357xUI uses a 3-pin VID to easily select V Range 0.6V to V 0.25V OUT IN the output voltage setting. Output voltage Short circuit and over current protection settings are available in 2 optimized ranges providing coverage for typical V settings. UVLO and thermal protection OUT IC level reliability in a PowerSOC solution The VID pins can be changed on the fly for fast dynamic voltage scaling. EP5357LUI further has Application the option to use an external voltage divider. Wireless and RF applications Wireless broad band data cards Smart phone and portable media players Advanced Low Power Processors, DSP, IO, Memory, Video, Multimedia Engines AVIN PVIN VOUT 4.7uF EP5357LUI 10uF EP5357xUI VSENSE VSO VS1 VFB VS2 ENABLE AGND LLM PGND 4.75mm Figure 1: Total Solution Footprint. Figure 2: Typical Application Schematic. www.altera.com/enpirion 03409 October 11, 2013 Rev E 2.25mm 4.7uF 10uFEP5357LUI/EP5357HUI Ordering Information Pin Assignments (Top View) Part Number Comment Package EP5357LUI LOW VID Range 16-pin QFN T&R 16 15 EP5357HUI HIGH VID Range 16-pin QFN T&R 1 NC(SW) 14 PVIN EP5357LUI Evaluation Board EVB-EP5357LUI PGND 2 13 AVIN EVB-EP5357HUI EP5357HUI Evaluation Board LLM 3 12 ENABLE VFB 4 11 VS0 VSENSE 5 10 VS1 AGND 6 9 VS2 7 8 Figure 3: EP5357LUI Pin Out Diagram (Top View) 16 15 1 NC(SW) 14 PVIN PGND 2 13 AVIN LLM 3 12 ENABLE NC 4 11 VS0 VSENSE 10 VS1 5 AGND 9 VS2 6 7 8 Figure 4: EP5357HUI Pin Out Diagram (Top View) Pin Description PIN NAME FUNCTION NO CONNECT These pins are internally connected to the common switching node of the 1, 15, internal MOSFETs. NC (SW) pins are not to be electrically connected to any external signal, NC(SW) 16 ground, or voltage. However, they must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage to the device. Power ground. Connect this pin to the ground electrode of the Input and output filter 2 PGND capacitors. LLM (Light Load Mode LLM) pin. Logic-High enables automatic LLM/PWM and logic- 3 LLM low places the device in fixed PWM operation. LLM pin should be connected to ENABLE, or should be disabled before ENABLE is pulled low. EP5357LUI: Feed back pin for external divider option. 4 VFB/NC EP5357HUI: No Connect 5 VSENSE Sense pin for preset output voltages. Refer to application section for proper configuration. 2 www.altera.com/enpirion 03409 October 11, 2013 Rev E VOUT VOUT NC(SW) NC(SW) EP5357HUI EP5357LUI VOUT VOUT NC(SW) NC(SW)