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Linear voltage regulator minimises PCB area, component count

Posted: 06 May 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Diodes Incorporated? voltage regulator? PCB?

Diodes Incorporated has unveiled a series of high voltage linear regulators that provide a fixed 5V 2% output and a 50mA drive capability. The devices are designed for use in 48V DC power systems in telecom, networking and Power-over-Ethernet equipment.

The ZXTR1005 devices are integrated in TO252-4 and PowerDI5060-8 TYPE B packages, minimising PCB area and reducing number of components when compared with a multi-chip discrete solution.


Figure 1: TO252-4 package outline information.


Figure 2: PowerDI5060-8 package outline information.

The regulator is targeted at providing an alternative solution for high voltage regulation tasks, where industry standard linear regulators cannot be used. The regulated 5V output enables microcontrollers to be powered from 48V telecom rails, while the devices' 100V tolerant inputs cope with any transient conditions.

Its line and load regulation capability also ensures that transient voltage drops will not result in latch-up, thereby safeguarding continuous operation of the voltage supply. To simplify regulator control and aid diagnostics, the device includes an active high enable pin allowing the output to be toggled on and off.

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