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AP6503-EVM
340
kHz
23
V
3
A Synchr
onous DCDC Buck Converte
r
AP6503
Document number: Rev. 1 - 0
1 of 4
www.diodes.com
August 2011
© Diodes Incorporated
Description
The AP6503 is a 340kHz switching
frequency external compensated
synchronous DCDC buck converter. It has
integrated low RDSON high and low side
MOSFETs.
The AP6503 enables continues load current
of up to 3A with efficiency as high as 95%.
The AP6503 features current mode control
operation, which enables fast transient
response times and easy loop
stabilization.
The AP6503 is available in a standard
Green SO-8EPpackage with exposed PAD
for improved thermal performance and is
RoHS compliant.
• Gaming Consoles
• TV sets and Monitors
• Set Top Boxes
• Distributed power systems
• Home Audio
• Consumer electronics
Performance Spec of AP6503SPG-EVM
Parameter
Conditions
Performance Value
Input voltage Range 4.75V to 23V 12V
Output Current 3A
Output Voltage 3.3V
Output Voltage Ripple 20mVp-p
Transient Response
Peak Deviation
Load step 1.5A/us to 3A/us
190mV
Switching Frequency 340kHz
Efficiency 90%
Figure 1. Evaluation Board
Figure 2. Efficiency vs Load Current
