EP5388QI Datasheet, PDF (1/13 Pages) Enpirion, Inc. – 800mA Synchronous Buck Regulator With Integrated Inductor 3mm x 3mm x 1.1mm Package

Product Overview
The EP5388QI is a synchronous buck
converter with integrated Inductor, PWM
controller, MOSFETS, and Compensation
providing the smallest possible solution size.
The EP5388QI requires only two small MLCC
capacitors to make a complete solution.
Integration of the inductor greatly simplifies
design, contains noise, reduces part count, and
reduces solution footprint. Low output ripple
ensures compatibility with RF systems.
The EP5388QI operates at a switching
frequency of 4 MHz, enabling this
unprecedented level of integration and small
external components. Type III voltage mode
control is used to provide high noise immunity
and wide control loop bandwidth.
The small footprint makes this part ideal for
space constrained portable applications.
Shutdown current of <1uA extends battery life
Output voltage level is programmed via a 3-pin
VID selector providing seven pre-programmed
output voltages along with an option for
external resistor divider.
Applications
• Noise sensitive RF applications
• Area constrained applications
• Wireless data applications
• Portable gaming devices
• Personal Media Players
• Advanced Mobile Processors, DSP, IO,
Memory, Video, Multimedia Engines
Ordering Information
Part Number
EP5388QI
EVB-EP5388QI
Temp Rating (°C)
Package
-40 to +85 16-pin QFN T&R
EP5388QI Evaluation Board
Enpirion^® Power Datasheet
EP5388QI 800mA PowerSoC
Synchronous Buck Regulator
With Integrated Inductor
Product Highlights
Featuring Integrated Inductor Technology
• 3mm x 3mm x 1.1mm QFN package
• Only two low cost MLCC caps required
• 4 MHz switching frequency
• High efficiency, up to 94%
• Up to 800mA continuous output current
• Wide 2.4V to 5.5V input range
• V_OUT Range 0.6V to V_IN – 0.5V
• 3-Pin VID output voltage programming
• 100% duty cycle capable
• Less than 1 µA standby current
• Low V_OUT ripple for RF compatibility
• Short circuit and over current protection
• UVLO and thermal protection
• RoHS compliant; MSL 3 260°C reflow
Typical Application Circuit
V_IN
4.7µF
0603
Voltage
Select
ENABLE
VSense
Vin
Vout
EP5388QI
VFB
VS0
VS1
VS2
GND
V_OUT
47uF
1206
Figure 1. Typical application circuit.
02377
October 11, 2013
www.altera.com/enpirion Page 1
Rev D