|Alguien dijo ...|
|La ciencia es como la tierra; solo se puede poseer un poco de ella.|
François Marie Arouet(Voltaire - 1694-1778).
Escritor y filósofo francés.
|New Vishay Siliconix P-Channel Load Switches Are Industry's First
Designed for On-Resistance Ratings at 1.5 V|
MALVERN, Pennsylvania — Five new p-channel
load switches, the industry's first such devices designed to offer low on-resistance at a 1.5-V gate drive, were
released today by Vishay Intertechnology, Inc. (NYSE: VSH).
To help minimize power consumption and increase
battery life, many of the ASICs found in portable electronics systems are designed to operate at core supply
voltages between 1.5 and 1.65 V. Until now, however, the lack of power MOSFETs with guaranteed turn-on operation
below 1.8 V has made it difficult for designers to take advantage of these low core supply voltages without the use
of level-shifting circuitry, which adds complexity while increasing power consumption.
addresses this problem with the breakthrough power MOSFETs released today, which are the industry's first that can
work directly from 1.5 V core supply voltages with on-resistance as low as 45 milliohms. With their low threshold
voltage and guaranteed specifications at a 1.5-V gate drive, the new devices eliminate the need for level-shifting
circuitry and maximize the power-saving benefits of low operating voltages in battery-operated systems.
The five power MOSFETs released today include two devices in the LITTLE FOOT TSOP-6 with 20-V (Si3495DV) and
-8-V (Si3499DV) drain-to-source breakdown voltages and on-resistance ratings at a 1.5-V gate drive of 47 milliohms
and 45 milliohms respectively.
Three additional devices being released, the -8-V Si8419DB,
Si5499DC, and Si1499DH, are available in the MICRO FOOT®, 1206 8 ChipFET®, and SC-70 packages, respectively. Like
the new LITTLE FOOT devices, they are rated for a 1.5 V gate drive. With their exceptionally compact package
designs, they also reduce footprint area dramatically and enable more flexible end-system design.
Part Number VDS (V) VGS (V) rDS(on) @ 4.5 V (milliohms) rDS(on) @ 2.5 V (milliohms)
rDS(on) @ 1.8 V (milliohms) rDS(on) @ 1.5 V (milliohms) Package
Si3499DV -8 5 23
29 36 45 LITTLE FOOT TSOP-6
Si3495DV -20 5 24 30 38 47
LITTLE FOOT TSOP-6
Si8419DB -8 5 35 42 52 69 MICRO FOOT
-8 5 36 45 56 77 1206 8 ChipFET
Si1499DH -8 5 78
95 115 153 SC-70
Samples and production quantities of the new p channel load
switches are available now, with lead times of 12 weeks for larger orders.
Viernes, 17 Junio, 2005 - 10:27