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Vishay’s New SiP21301 LDO Controller Offers Adjustable and Fixed 1.2-V and 1.5-V Output Voltages With 80 % Efficiency
Device Delivers 1 A To 7 A of Current With 1 % Output Voltage Accuracy to Drive N-Channel MOSFETs in FPGA, DSP, and ASIC Applications
MALVERN, PENNSYLVANIA — Jan. 3, 2008 — Vishay Intertechnology, Inc. (NYSE: VSH) today released an LDO controller with adjustable and fixed output voltage options that uses external n-channel MOSFETs to provide extremely low drop-out voltages of under 50 mV at very high currents, up to 7 A, with 80 % efficiency.
The SiP21301 device is optimized for driving n-channel MOSFETs to power FPGAs, ASICs, and ASSPs in game consoles, set top boxes, LCD televisions, and networking equipment. Because it works with an external n-channel MOSFET with a separate supply voltage, the SiP21301 allows designers to choose the FET with the on-resistance, drop-out voltage, output current, and power dissipation ratings that best suit their applications, operating from 2.5 V down 0.65 V at up to 7 A. The 80 % efficiency of the SiP21301 solution helps to reduce energy consumption in end products while simplifying the design of dc-to-dc converters.
Designed to maintain regulation while delivering 7-A peak current, the new SiP21301 is ideal for systems that have a high surge current upon turn-on and very low drop-out voltage requirements. The SiP21301 features programmable inrush current protection on start up, short-circuit protection, thermal shutdown, and under-voltage lockouts for safe operation of the IC and the external MOSFET.
The controller offers an adjustable output voltage, as well as fixed 1.2-V and 1.5-V output voltage options. The device provides a low operating current, a low standby current, and a 1 % output voltage accuracy.
The SiP21301 is available in the compact, lead (Pb)-free MSOP8 package and operates over a −40 °C to +125 °C junction temperature range.
Samples and production quantities of the new SiP21301 LDO controller are available now, with lead times of 8 to 12 weeks for initial orders.
Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers
of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors,
and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial,
computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product
innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can
be found on the Internet at www.vishay.com.
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