The FAN5904 is a high-efficiency, low-noise, synchronous, step-down, DC-DC converter optimized for powering Radio Frequency (RF) Power Amplifiers (PAs) in handsets and other mobile applications. It has a wide input voltage range, provides adjustable output voltage, and features a small form factor, integrated bypass FET, and other characteristics.
The FAN5904 is a high-efficiency, low-noise, synchronous step-down DC-DC converter designed to power Radio Frequency (RF) Power Amplifiers (PAs) in handsets and other mobile applications. It supports both High-Power Mode for GSM Tx power and Low-Power Mode supporting up to 3.0W for 3G/3.5G and 4G platforms. The device features a dynamic supply bias for polar or linear GSM/EDGE PAs and 3G/3.5G and 4G PAs, as well as dynamic supply bias for GSM/EDGE quad band amplifiers for mobile handsets and data cards.
| Input Voltage Range | 2.7V to 5.5V |
|---|---|
| Output Voltage Range | 0.40V to 3.50V (or Vin) |
| Load Current (Bypass Mode) | Upto 3A |
| Output Current (High Power PWM Mode) | up to 2.3A |
| Output Current (Low Power Auto Mode) | up to 1.2A |
| Integrated Bypass FET Resistance | 35mΩ |
| Package Type | 16-Bump, 0.40mm Pitch WLCSP |
| Inductor Requirement | Single 470nH |
| Operating Temperature | -40°C to +85°C |
It is optimized for powering Radio Frequency (RF) Power Amplifiers (PAs) in handsets and other mobile applications.
The output voltage may be dynamically adjusted from 0.40V to 3.50V.