ADP2118 is a high efficiency synchronous step-down DC-to-DC regulator with a continuous output current of 3A. It integrates 75mΩ and 40mΩ FETs, with an output accuracy of ±1.5%. The input voltage range is from 2.3V to 5.5V, and the output voltage range is from 0.6V to VIN. It has a selectable fixed switching frequency of 600kHz or 1.2MHz, and can be synchronized between 600kHz and 1.4MHz. It also has selectable synchronize phase shift of 0° or 180°, selectable PWM or PFM mode operation, and various protection features such as UVLO, OVP, OCP, and thermal shutdown.
The ADP2118 is a compact 4 mm × 4 mm LFCSP_WQ synchronous step‑down regulator that delivers up to 3 A continuous output current. It operates from 2.3 V to 5.5 V input and provides an adjustable output from 0.6 V up to the input voltage, with selectable 600 kHz or 1.2 MHz fixed switching frequencies and optional PFM mode for light‑load efficiency.
The device includes integrated FETs, soft‑start, UVLO, OVP, OCP and thermal‑shutdown protection, and its specifications are detailed in tables covering electrical parameters, absolute maximum ratings, thermal resistance, pin functions, and typical performance curves. Applications span point‑of‑load conversion, communications, industrial instrumentation, consumer electronics, and medical devices.
| Input voltage range | 2.3 V to 5.5 V |
|---|---|
| Output voltage range | 0.6 V to VIN |
| Continuous output current | 3 A |
| Switching frequency | 600 kHz or 1.2 MHz (fixed) |
| Undervoltage lockout (UVLO) threshold | 2.2 V (rising) |
| Thermal shutdown threshold | 140 °C |
| Package | 16‑lead LFCSP_WQ, 4 mm × 4 mm |
The ADP2118 operates from 2.3 V to 5.5 V input.
Yes, the regulator can switch to PFM mode at light loads to reduce switching frequency and save power.
It includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
The device is offered in a 16‑lead LFCSP_WQ package.