EP5368QI Datasheet, PDF (1/12 Pages) Enpirion, Inc. – 600mA Synchronous Buck Regulator With Integrated Inductor

Featuring Integrated Inductor Technology
Product Highlights
• Integrated Inductor
• 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 700mA continuous output current
• Wide 2.4V to 5.5V input range
• V_OUT Range 0.603V to V_IN – 0.4V
• 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
• Stable over entire operating range
• RoHS compliant; MSL 3 260°C reflow
EP5368QI
600mA Synchronous Buck Regulator
With Integrated Inductor
3mm x 3mm x 1.1mm Package
April 2008
RoHS Compliant
Halogen Free
Product Overview
The EP5368QI is a synchronous buck
converter with integrated Inductor, PWM
controller, MOSFETS, and Compensation
providing the smallest possible solution size.
The EP5368QI 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 EP5368QI 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 device
is stable over all input and output voltages . It
can source 600mA of current over the
industrial temperature range and up to 700mA
over the commercial temperature range.
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.
Typical Application Circuit
VIN
4.7µF
0603
Voltage
Select
ENABLE
VSense
Vin
Vout
EP5368QI
VFB
VS0
VS1
VS2
GND
VOUT
22µF
0805
Figure 1. Typical application circuit.
Applications
• Noise sensitive RF applications
• Area constrained applications
• Smart phones and PDAs
• Portable gaming devices
• Personal Media Players
• Advanced Mobile Processors, DSP, IO,
Memory, Video, Multimedia Engines