Diodes AP6502 User Manual
New prod uc t ap6502, Description, Features
AP6502
Document Number: DS35423 Rev. 9 - 2
1 of 15
www.diodes.com
January 2013
© Diodes Incorporated
NEW PROD
UC
T
AP6502
340kHz 18V 2A SYNCHRONOUS DC/DC BUCK CONVERTER
Description
The AP6502 is a 340kHz switching frequency external compensated
synchronous DC/DC buck converter. It has integrated low R
DSON
high and low side MOSFETs.
The AP6502 enables continues load current of up to 2A with
efficiency as high as 95%.
The AP6502 features current mode control operation, which enables
fast transient response times and easy loop stabilization.
The AP6502 simplifies board layout and reduces space requirements
with its high level of integration and minimal need for external
components, making it ideal for distributed power architectures.
The AP6502 is available in a standard Green SO-8 and SO-8EP
package with exposed PAD for improved thermal performance and is
RoHS compliant.
Features
•
V
IN
4.7V to 18V
•
2A Continuous Output Current, 3A Peak
•
V
OUT
Adjustable from 0.925V to 16V
•
340kHz Switching Frequency
• Programmable
Soft-Start
• Enable
Pin
• Protection
OCP
Thermal
Shutdown
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
COMP
SW
GND
BS
EN
FB
SS
( Top View )
1
2
3
4
8
7
6
5
IN
SO-8EP
Figure 1 Package Pin Out
Applications
• Gaming
Consoles
•
Flat Screen TV Sets and Monitors
•
Set Top Boxes
•
Distributed power systems
• Home
Audio
• Consumer
Electronics
• Network
Systems
•
FPGA, DSP and ASIC Supplies
• Green
Electronics
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)
and <1000ppm antimony compounds.
Typical Application Circuit
Figure 2 Typical Application Circuit
0
0.4
0.8
1.2
1.6
2
LOAD CURRENT (A)
Efficiency vs. Load Current
E
FFI
C
IEN
C
Y
(
%
)
L = 10µH
V
= 3.3V
OUT
40
50
60
70
80
90
100
V = 5V
IN
V = 12V
IN