Diodes Incorporated

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Inactve Datasheet Archive

AP65503 (Obsolete)

Inactive Datasheet Archive

Contact Sales

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


The AP65503 is a 750kHz switching frequency external compensated synchronous DC/DC buck converter. It has integrated low RDSON high and low side MOSFETs.
The AP65503 enables continues load current of up to 5A with efficiency as high as 96%.
The AP65503 implements an automatic custom light load efficiency improvement algorithm.
The AP65503 features current mode control operation, which enables fast transient response times and easy loop stabilization.
The AP65503 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 AP65503 is available in a standard Green SO-8EP package 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

Efficiency (%) 96
Frequency Typ (Hz) 750
HS RDS(ON) (mΩ) 80
LS RDS(ON) (mΩ) 32
MaximumInput Voltage (V) 17
MinimumInput Voltage (V) 4.75
Output Current (mA) 5
Output Voltage (V) 2.5 to 16
Quiescent Current Typ (mA) 0.3
Shutdown Current Typ (µA) 0.3
Type Buck

Related Content


Technical Documents

Recommended Soldering Techniques