Diodes Menu Close
Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The AP6503 is a 340kHz switching frequency external compensated synchronous DC/DC 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 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 AP6503 is available in a standard Green SO-8EP package with exposed PAD for improved thermal performance and is RoHS compliant.


  • 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

Product Specifications

Product Parameters

Type Buck
Efficiency 95 %
HS RDS(ON) 100 mΩ
LS RDS(ON) 100 mΩ
Frequency Typ 340 kHz
Minimum Input Voltage 4.75 V
Maximum Input Voltage 23 V
Output Current 3 A
Output Voltage 0.925 to 20 V
Quiescent Current Typ 0.6 mA
Shutdown Current Typ 0.3 µA

Related Content


Technical Documents

Evaluation Boards and User Guides

Recommended Soldering Techniques



Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP6503ASP-13 Mouser Electronics Inc. 3235 8/7/2020 Buy Now United States
AP6503ASP-13 RS Components 245 8/7/2020 Buy Now England
AP6503ASP-13 RS Components Ltd. 245 8/7/2020 Buy Now Japan
AP6503SP-13 Arrow Electronics 16 8/7/2020 Buy Now United States
AP6503SP-13 Arrow Electronics Central EU 2500 8/7/2020 Buy Now Germany
AP6503SP-13 Digi-Key Electronics 52812 8/7/2020 Buy Now United States
AP6503SP-13 Mouser Electronics Inc. 12226 8/7/2020 Buy Now United States
AP6503SP-13 Avnet 2500 8/6/2020 Buy Now United States


Product Change Notices

PCN # Issue Date Subject
PCN-2427 2019-10-15 Device End of Life (EOL)