The ADP2108 is a high efficiency, low quiescent current step-down dc-to-dc converter in an ultrasmall 5-ball WLCSP package. It operates at a fixed frequency of 3MHz, has an input voltage range of 2.3V to 5.5V, and a maximum output current of 600mA.
The ADP2108 is a high‑efficiency, low‑quiescent‑current step‑down DC‑to‑DC converter designed for portable applications. It operates from 2.3 V to 5.5 V input, delivers up to 600 mA load current, and achieves up to 95 % peak efficiency. The device uses a current‑mode architecture with a fixed 3 MHz switching frequency, internal synchronous rectifier, soft‑start, and multiple protection features such as thermal shutdown and undervoltage lockout.
Typical applications include PDAs, palmtop computers, wireless handsets, digital audio players, and GPS navigation units. An evaluation board is provided for each fixed output version, and the part is supplied in a 5‑ball wafer‑level chip‑scale package (WLCSP) to minimize board space.
| Input Voltage Range | 2.3 V – 5.5 V |
|---|---|
| Peak Efficiency | 95 % |
| Maximum Load Current | 600 mA |
| Typical Quiescent Current | 18 pA |
| Output Voltage Accuracy | ±2 % |
| Thermal Shutdown Threshold | 150 °C |
| Package Type | 5‑Ball WLCSP |
The ADP2108 operates from 2.3 V to 5.5 V input.
It is offered in a 5‑ball wafer‑level chip‑scale package (WLCSP).
The converter reaches a peak efficiency of 95 %.