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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.


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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 Digi-Key Electronics 2515 10/19/2019 Buy Now United States
AP6503ASP-13 Mouser Electronics Inc. 3609 10/19/2019 Buy Now United States
AP6503ASP-13 RS Components 1570 10/18/2019 Buy Now England
AP6503ASP-13 RS Components Ltd. 1570 10/18/2019 Buy Now Japan
AP6503SP-13 Arrow Electronics 1748 10/19/2019 Buy Now United States
AP6503SP-13 Digi-Key Electronics 64733 10/19/2019 Buy Now United States
AP6503SP-13 Mouser Electronics Inc. 14798 10/19/2019 Buy Now United States
AP6503SP-13 Future Electronics - Europe 12500 10/18/2019 England


Product Change Notices

PCN # Issue Date Subject
PCN_2427 2019-10-15 Device End of Life (EOL)