FX5545G008

Features:

• Fully integrated DC/DC converter
• Advanced development of FX5545G305
• High efficiency over large load range
• 100% duty cycle
• Power density - more than 380W/inch³
• 1A shutdown current
• 2.5V to 6V input range (1Li+ and 3-cell NiCd or NiMH cells)
• 0.8V to 4.5V* output voltage
• Programmable PWM/PSM controls
• Low output ripple
• BGA construction
• Temperature range: - 40°C to + 85°C
• No external components required
• Output power 10W
• Maximum current 3A
• Low profile
*Note: For higher putput voltage please consult factory at FunctionPAK@Vishay.com


Application

• Cordless phones, PDAs and others
• Supply voltage source for low-voltage chip sets
• Point of Load (POL) applications such as drivers for FPGA's, microprocessors, DSP's amplifiers, etc.
• Portable computers
• Battery back-up supplies
• Cameras


Description

The DC/DC converter FX5545G008 is a programmable topology synchronized Buck converter for today's continuous changing portable electronic market. The DC/DC converter FX5545G008 provides flexibility of utilizing various battery configurations and chemistries such as NiCd, NiMH, or Li+ with an input voltage range of 2.5V to 6V. An additional flexibility is provided with topology programmability to power multiple loads such as power amplifiers, microcontrollers, or baseband logic IC's. For ultra-high efficiency, converters are designed to operate in synchronous rectified PWM mode under full load while transforming into externally controlled pulse-skipping mode (PSM ) under light load.

The DC/DC converter FX5545G008 is available in 20-ports BGA package.In order to satisfy the stringent ambient temperature requirements, the DC/DC converter is designed to handle the industrial temperature range of - 40°C to + 85°C.