FX5545G008 is a Vishay low profile 3mm DC/DC buck converter with input voltage range of 2.5V to 6V, output voltage range of 0.8V to 4.5V, output power of 10W and maximum current of 3A.
The Vishay FX5545G008 is a low‑profile 3 mm DC/DC buck converter that accepts 2.5 V to 6 V input and provides a programmable output from 0.8 V to 4.5 V at up to 3 A. It delivers up to 10 W of power with efficiency reaching 95 % and features synchronous PWM/PSM control, low output ripple, and a 1 µA shutdown current.
Designed for portable electronics, the device is suitable for cordless phones, PDAs, point‑of‑load supplies for FPGA, microprocessor and DSP drivers, as well as cameras and battery‑back‑up modules. It is supplied in a 20‑pin BGA package with a 400 kHz oscillator and operates from –40 °C to +85 °C. Ordering information and pin‑out details are provided in the handbook.
| Input voltage range | 2.5 V to 6 V |
|---|---|
| Output voltage range | 0.8 V to 4.5 V |
| Maximum output current | 3 A |
| Output power | 10 W |
| Efficiency | up to 95 % |
| Shutdown current | 1 µA |
| Operating temperature range | -40 °C to +85 °C |
| Package type | 20‑pin BGA |
| Oscillator frequency | 400 kHz |
| Output ripple and noise | 80 mVpp (DC‑20 MHz) |
The converter accepts an input voltage from 2.5 V to 6 V.
It can achieve up to 95 % efficiency.
Typical applications include cordless phones, PDAs, point‑of‑load supplies for FPGA, microprocessor and DSP drivers, cameras, and battery‑back‑up modules.
The shutdown current is 1 µA.