Integrated Circuit has 50 mA output current capability.
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Press Release Summary:
With 13.2-100 V operating input voltage range, LR12 adjustable linear regulator provides circuit protection. Product also offers adjustable output voltage of 1.20-88 V and provides output current limiting (100 mA max) for fail-safe protection system design. It operates normally at 10 uA of quiescent current and can be put into low power shutdown state by back biasing output. Offered in TO-92, SO-8, and D-Pak packages, unit operates with 100 nF capacitor.
Original Press Release:
Supertex Expands High Voltage Linear Regulator Family
New LR12 IC features 100 V Input Voltage, 50mA Output Current Capability
SUNNYVALE, Calif. June 17, 2003 - Supertex, Inc. (NASDAQ: SUPX) today announced LR12, a high voltage, adjustable linear regulator featuring a wide operating input voltage range of 13.2V to 100V. This integrated circuit (IC) provides high input voltage circuit protection, ideal for high voltage rail applications that have voltage spikes such as DC/DC SMPS startups circuits, industrial and motor controls, battery powered systems, power supplies, telecom and automotive applications, and LED drivers.
Featuring an adjustable output voltage of 1.20V to 88V, the LR12 increases design flexibility to incorporate a low current regulated supply running from a high voltage supply rail with two inexpensive external resistors and two small bypass capacitors. The LR12 provides output current limiting (100mA max.) for fail-safe protection system design. A 5% internal reference is provided, which meets the majority of power supply system requirements. The LR12 operates normally at only 10uA of quiescent current and can be put into a low power shutdown state by back biasing the output so that it saves power and increases efficiency, in SMPS bootstrapping applications.
"System designers for automotive, industrial and telecom applications are confronted with difficult design parameters while dealing with extreme operating situations. A linear regulator with a wide operating voltage such as the LR12 is the perfect solution," stated Brian Hedayati, Director of Supertex Marketing. "We've had a great deal of success offering a 450V input voltage, 10mA output current solution to our customers with our LR8. With the LR12 we now offer a lower voltage, higher current IC solution for their power management applications."
Other features of the LR12 are: (1) its ability to operate with a very small output capacitor of 100 nF for stability while others require a capacitor between 10uF to 100uF, which reduces cost and save space, and (2) its over-temperature protection provides increased reliability under short circuit conditions. This product is offered in three different packaging options (TO-92, SO-8 and D-Pak) for design flexibility into different applications requiring different power ranges.
Samples are available from stock. Lead-time for production quantities is 4 to 6 weeks ARO, priced at US$1.03 for LR12N3, $1.12 for LR12LG and $1.23 for LR12K4 each in 1K quantities.
About Supertex
Supertex, Inc. is a publicly-held mixed signal semiconductor manufacturer, focused on high voltage interface products for use in the telecommunications, networking systems, flat panel displays, medical and industrial electronics industries. Supertex product, corporate and financial information is readily available at www.supertex.com.
