EP53F8QI Datasheet, PDF (1/12 Pages) Enpirion, Inc. – 1500 mA Synchronous Buck PWM DC-DC Converter with Integrated Inductor

Enpirion^® Power Datasheet
EP53F8QI 1500 mA PowerSoC
Voltage Mode Synchronous
PWM Buck with Integrated Inductor
Description
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.
Output voltage is programmed via an external
resistor divider providing a wide range of
flexibility while maintaining a very small footprint.
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 mV_P-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
 RoHS Compliant; MSL 3 260 °C Reflow
Application
 Wireless wide area networking data cards.
 Replacement of inefficient LDOs
 Noise Sensitive Applications such as RF,
Audio and Video, and high speed IO
 Computing, Computer Peripherals, Storage,
Networking, and Instrumentation
 USB, DSL, STB, DVR, DTV, and iPC
V_IN
CIN
10uF
10Ω
680pF
1 uF
PVIN
POK
5.0pF
VOUT
EP53F8
AVIN1
AVIN2
ENABLE
VFB
AGND
PGND
Ra
237k
Rb
V_OUT
COUT
22 uF
Figure 1: Typical Application Circuit
Product Performance
95
85
75
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)
Figure 2: Efficiency, V_IN=5V, V_OUT=3.7V
01542
October 11, 2013
Rev F