Diodes Menu Close
Back to Inactve Datasheet Archive

AP1501A (Not Recommended for new design)

NRND = Not Recommended for New Design

Inactive Datasheet Archive

Contact Sales

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


The AP1501A series are monolithic ICs that are designed for a step-down DC/DC converter, and possess the ability to drive a 5A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be control°C by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. The AP1501A series operates at a switching frequency of 150Khz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version includes fixed 3.3V, 5V, 12V, and an adjustable type. The packages are available in a standard 5-lead TO263 and TO220 packages.


  • Simple High-efficiency step-down regulator
  • On-card switching regulators
  • Positive to negative converter

Product Specifications

Product Parameters

Efficiency (%) 88
Frequency Typ (Hz) 150
MaximumInput Voltage (V) 40
MinimumInput Voltage (V) 4.5
Output Current (A) 5
Output Voltage (V) N/A
Quiescent Current Typ (mA) 5
Shutdown Current Typ (µA) 150
Type Buck

Related Content


Technical Documents

Application Notes

Evaluation Board User Guides

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2427 2019-10-15 2020-04-15 Device End of Life (EOL)