The ADP5037 is a dual 3 MHz, 800 mA buck regulator with two 300 mA low dropout (LDO) regulators. It has a main input voltage range of 2.3 V to 5.5 V and programmable or externally adjustable output voltage ranges from 0.8 V to 3.8 V (buck regulators) and 0.8 V to 5.2 V (LDO regulators). It is suitable for powering processors, ASICs, FPGAs, and RF chipsets, as well as portable instrumentation and medical devices in space-constrained applications.
The ADP5037 combines two high‑performance buck regulators and two low‑dropout (LDO) regulators in a compact 24‑lead 4 mm × 4 mm LFCSP package. It offers a 3 MHz buck switching frequency, 800 mA buck current capability, and 300 mA LDO current, with programmable or fixed output options.
The document provides electrical specifications, pin descriptions, typical application circuits, thermal data, ordering information, and mechanical dimensions, enabling designers to integrate the device into portable, space‑constrained applications such as processors, ASICs, FPGAs, and medical instruments.
| Input voltage range | 2.3 V to 5.5 V |
|---|---|
| Buck regulator output voltage range | 0.8 V to 3.8 V |
| LDO output voltage range | 0.8 V to 5.2 V |
| Maximum buck current per channel | 800 mA |
| Maximum LDO current per channel | 300 mA |
| Switching frequency | 3 MHz |
| Package | 24‑lead 4 mm × 4 mm LFCSP |
| Thermal shutdown threshold | 150 °C |
The device operates from 2.3 V to 5.5 V input.
Each buck regulator can supply up to 800 mA.
It is offered in a 24‑lead 4 mm × 4 mm LFCSP package.