Diodes AP6502A User Manual
New prod uc t ap6502a, Description, Features
AP6502A
Document number: DS35812 Rev. 3 - 2
1 of 14
December 2012
© Diodes Incorporated
NEW PROD
UC
T
AP6502A
240kHz 23V 2A SYNCHRONOUS DC/DC BUCK CONVERTER
Description
The AP6502A is a 240kHz switching frequency external compensated
synchronous DCDC buck converter. It has integrated low R
DSON
high
and low side MOSFETs.
The AP6502A enables continues load current of up to 2A with efficiency
as high as 95%.
The AP6502A features current mode control operation, which enables
fast transient response times and easy loop stabilization.
The AP6502A 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 AP6502A is available in a standard Green SO-8EP package with
exposed PAD for improved thermal performance and is RoHS
compliant.
Features
•
V
IN
4.75V to 23V
•
2A Continuous Output Current, 3A Peak
•
V
OUT
Adjustable to 0.925 to 16V
•
240kHz 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
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. Se 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 Applications Circuit
Figure 2. Typical Application Circuit
SO-8EP
(Top View)
1
2
3
4
8
7
6
5
SS
EN
COMP
FB
BS
IN
SW
GND
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