Product category:
Power Supply ICs and Controllers
News Release from: Fairchild Semiconductor | Subject: FAN5230/FAN5231 chipset
Edited by the Electronicstalk Editorial
Team on 19 April 2001
Two-chip set provides all notebook
voltages
Two chips from Fairchild Semiconductor convert notebook PC battery/power adapter voltage to all the different voltages required for the processor, chipset, memory, disk drives and I/O circuitry.
Two chips from Fairchild Semiconductor convert notebook PC battery/power adapter voltage to all the different voltages required for the processor, chipset, memory, disk drives and I/O circuitry Fairchild reckons the FAN5230 and FAN5231 chipset provides the most highly integrated, and therefore the smallest circuit board footprint power management option available for Intel Speedstep, AMD Powernow!, and Transmeta processor-based notebook PCs
This article was originally published on Electronicstalk on 28 Feb 2001 at 8.00am (UK)
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Dual-output buffer for DDR SDRAM modules
Fairchild Semiconductor has introduced a dual-output registered buffer for 184-pin, 2.5V PC200/PC266, 72bit-wide registered double data rate (DDR) SDRAM modules.
The FAN5231 combines two PWM controllers to provide 0.925-2V at over 15A to power the microprocessor core and 1.5V at over 2A to power the microprocessor I/O.
A 5bit DAC sets the core output voltage and conforms to the Intel Mobile VID specification.
A linear regulator also provides 2.5V at up to 150mA to power the microprocessor clock.
The second part in the chip set - the FAN5230 - integrates three PWM switching regulator controllers to provide 3.3 and 5V at over 5A each and 12V at 120mA.
Two integrated linear regulators provide standby always-on power at 3.3 and 5V at 50mA.
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