Date: 28/09/2010
2MHz, 500mA synchrounous buck regulator from Fairchild
Fairchild Semiconductor has released the FAN5358, a 2MHz, 500mA, synchronous Buck regulator. The FAN5358 is a step-down switching voltage regulator that delivers a fixed output from an input voltage supply of 2.7V to 5.5V. The FAN5358 is part of a broad portfolio of devices designed to address the needs of mobile power, including core power, peripheral power, battery charging, RFPA power and lighting solutions. Using a proprietary architecture with synchronous rectification, the device is capable of delivering 500mA and maintaining a high efficiency of over 80 percent at load currents as low as 1mA, according to Fairchild.
At moderate and light loads, the FAN5358 uses pulse frequency modulation to operate the device in power-save mode, consuming low quiescent current (25ľA typical). Even with such a low quiescent current, the device provides excellent transient response during large load swings. Additionally, in shutdown mode the supply current drops below 1ľA, reducing power consumption.
The FAN5358 is suggested for applications in cell phones, smartphones, 3G/4G data cards, as well as tablets, ultra-mobile PCs and Netbooks.
Package: 6-lead SC70
Price: US $0.39 for 1K pieces
Availability: Sampling now