Torex : Voltage regulators offer low dropout voltage

Available in the tiny USP-6C package (1.8 x 2.0 x 0.6mm), as well as in standard SOT-25 and SOT-89-5 versions, the new XC6220 Series of voltage regulators from Torex Semiconductor offer exceptionally low dropout voltage – typically 20mV with a 100mA load. These high current, ultra-low dropout voltage regulators provide a highly stable, low noise supply that meets the demands of battery-driven circuits such as those found in disk drives, digital and video cameras and portable AV equipment.

The XC6220 Series consists of a voltage reference, an error amplifier, a current limiter, an inrush current prevention circuit and a phase compensation circuit plus a driver transistor and, with Torex’s innovative GreenOperation (GO) function, battery life can be extended greatly.

 With this GO function, the XC6220 LDO automatically switches from high speed (HS) mode, where power consumption is typically 50µA, to power save(PS)  mode, just 8µA,  when load current is small (2mA or less). The device quickly returns to high speed mode once again as the load current demand reaches 5mA and above.

Output voltage can be factory set anywhere from 0.8V to 5.0V in 50mV steps, and the operating voltage range is from 1.6V to 6.0V. The LDO is also compatible with low ESR ceramic capacitors, which give added output stability.

An over current protection circuit and a thermal shutdown circuit are built in. The over current protection circuit will operate when the output current reaches its limit current. When the junction temperature reaches its limit temperature (150°C), the thermal shutdown circuit takes control, it then releases at 125°C.

The CE (chip enable) function enables design engineers to turn off the output, putting the device into standby mode, thereby greatly reducing power consumption. In addition, for the XC6220B/D versions, the electric charge at the CL capacitor is discharged via the internal auto-discharge switch, ensuring that the VOUT pin drops down to ground quickly.

More in depth information about the XC6220 LDO voltage regulators, which includes a supporting datasheet, can be found directly on Torex Semiconductor’s website at:

In 2001 Torex Semiconductor Limited set up a separate European sales & logistics company, Torex Semiconductor Europe Limited, reflecting its buoyant sales in the European market over the last few years.  Based near Loughborough in the UK, the new company provides all technical support and logistics for European customers.

To find out more about Torex Semiconductor and its product line-up, visit the company’s website at:

Andy Scott,

Tel: +44 (0)1530 512404,
Fax: +44 (0)1530 512400
Torex Semiconductor Europe Ltd, Unit 1 The Courtyard, Whitwick Business Park, Stenson Road, Coalville, Leicestershire LE67 4JP, England

Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.

0 comments on “Torex : Voltage regulators offer low dropout voltage

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.