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AP6502A Datasheet PDF : 14 Pages
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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 RDSON 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
an exposed PAD for improved thermal performance and is RoHS
compliant.
Pin Assignments
(Top View)
BS 1
IN 2
SW 3
GND 4
8 SS
7 EN
6 COMP
5 FB
SO-8EP
Figure 1. Package Pin Out
Features
Applications
VIN 4.75V to 23V
2A Continuous Output Current, 3A Peak
VOUT Adjustable to 0.925 to 20V
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)
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 Applications Circuit
100
90
80
VIN = 5V
VIN = 12V
70
60
50
VOUT = 3.3V
L = 10µH
40
0
0.4
0.8
1.2
1.6
2
LOAD CURRENT (A)
Efficiency vs. Load Current
INPUT
C1
10μF
2
1
IN
BST
3
ON 7
SW
OFF
EN AP6502A
5
FB
8
C4 SS
0.1μF
6
COMP
4
GND
C5
10nF
L1
10μH
R1
26.1kΩ
R2
10kΩ
C3
6.8nF
R3
6.8kΩ
OUTPUT
VOUT
3.3V
C2
2 x 22μF
Figure 2. Typical Application Circuit
AP6502A
Document number: DS35812 Rev. 4 - 2
1 of 14
www.diodes.com
August 2015
© Diodes Incorporated
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