EP53F8QI
1500 mA Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
RoHS Compliant; Halogen Free
Description
Application
The EP53F8QI provides high efficiency in a very
small footprint. Featuring integrated inductor, the
device delivers up to 1500mA of continuous
output current. Total solution footprint can be as
little as 40mm2.
•
Wireless wide area networking data cards.
•
Replacement of inefficient LDOs
•
Noise Sensitive Applications such as RF,
Audio and Video, and high speed IO
Output voltage is programmed via an external
resistor divider providing a wide range of
flexibility while maintaining a very small footprint.
•
Computing, Computer Peripherals, Storage,
Networking, and Instrumentation
•
USB, DSL, STB, DVR, DTV, and iPC
Integration of the inductor reduces conducted
and
radiated
noise
providing
excellent
compatibility with sensitive RF and high speed
data applications.
Features
Integrated Inductor Technology
•
Total Solution Footprint as Small as 40 mm2
•
3 mm x 3 mm x 1.1 mm QFN Package
•
Solution Power Density up to 140mW/mm2
•
1500 mA Continuous Output Current
•
High Efficiency, up to 94 %
•
Low Ripple Voltage; 8 mVP-P Typical
•
Power OK Signal with 5 mA Sink Capability
•
2.4V to 5.5V Input Voltage Range
•
Fast Transient Response
•
4 MHz Fixed Switching Frequency
•
Low Dropout Operation: 100 % Duty Cycle
•
Under Voltage Lockout, Over Current, Short
Circuit, and Thermal Protection
•
Figure 1: Typical Application Circuit
Product Performance
95
85
75
Efficiency (%)
•
65
55
45
35
25
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5
Load Current (A)
RoHS Compliant; MSL 3 260 °C Reflow
Figure 2: Efficiency, VIN=5V, VOUT=3.7V
www.enpirion.com
01542
4/3/2009
Rev:A
