The AP1501 series is a monolithic step‑down DC/DC converter that integrates a switching transistor, providing up to 3 A load current without external driver components. It operates at a fixed 150 kHz switching frequency and includes thermal‑shutdown and current‑limit protection, as well as an ON/OFF shutdown control input.
The device is offered in two 5‑lead packages (TO‑220‑5L and TO‑263‑5L) and supports fixed output voltages of 3.3 V, 5 V, 12 V, or an adjustable version ranging from 1.23 V to 37 V. Typical efficiencies reach up to 90 % depending on the voltage version and load.
| Output voltage options | 3.3 V, 5 V, 12 V, adjustable |
|---|---|
| Adjustable output range | 1.23 V to 37 V ±4 % |
| Switching frequency | 150 kHz ±15 % |
| Maximum output current | 3 A |
| Maximum operating input voltage | 40 V |
| Available packages | TO‑220‑5L(R) and TO‑263‑5L |
| Thermal resistance (TO‑220‑5L) | 0.28 °C/W |
| Absolute maximum supply voltage | +45 V |
| Storage temperature range | -65 °C to +150 °C |
The AP1501 operates at a fixed switching frequency of 150 kHz with a tolerance of ±15 %.
The device can supply up to 3 A of output current.
The AP1501 is offered in TO‑220‑5L(R) and TO‑263‑5L packages.
Yes, it includes an ON/OFF shutdown control input that can place the regulator in standby mode.