EP5352Q/EP5362Q/EP5382Q
500/600/800mA Synchronous Buck Regulators
With Integrated Inductor
RoHS Compliant
V
IN
Product Overview
UVLO
Thermal Limit
Current Limit
ENABLE
Soft Start
P-Drive
(-)
PWM
Comp
(+)
Logic
N-Drive
V
OUT
GND
Sawtooth
Generator
Compensation
Network
V
SENSE
(-)
Error
Amp
(+)
Switch
V
FB
DAC
VREF
Voltage
Select
Package Boundry
VS0 VS1 VS2
The Ultra-Low-Profile EP53X2Q product family is
targeted to applications where board area and
profile are critical. EP53X2Q 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 QFN package. The
EP53x2Q family is engineered to simplify design
and to minimize layout constraints.
High
switching frequency and internal type III
compensation provides superior transient
response. With a 1.1 mm profile, the EP53x2 is
perfect for space and height limited applications.
A 3-pin VID output voltage select scheme
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.
Product Highlights
•
Revolutionary integrated inductor
•
Very small solution foot print*
•
Fully RoHS compliant; MSL 3 260°C reflow
•
Only two low cost components required
•
5mm x 4mm x1.1mm QFN package
•
Wide 2.4V to 5.5V input range
•
500, 600, 800 mA output current versions
•
Less than 1
μA
standby current
•
4 MHz switching frequency
•
Fast transient response
•
Very low ripple voltage; 5mV
p-p
typical
•
3 Pin VID Output Voltage select
•
External divider option
•
Dynamically adjustable output
•
Designed for Low noise/EMI
•
Short circuit, UVLO, and thermal protection
Typical Application Circuit
ENABLE
V
IN
2.2uF
V
Sense
V
out
10μF
V
OUT
V
in
Voltage
Select
V
S0
V
S1
V
S2
V
FB
GND
Figure 1. Typical application circuit.
Applications
•
•
•
•
•
•
Area constrained applications
Mobile multimedia, smartphone & PDA
Mobile and Cellular platforms
VoIP and Video phones
Personal Media Players
FPGA, DSP, IO & Peripherals
*Optimized PCB layout Gerber files downloadable from the Enpirion website to assure first pass design success.
03132
4/28/2009
Rev:B
ENPIRION [ ENPIRION, INC. ]
