Product category:
Power Supply ICs and Controllers
News Release from: Semtech | Subject: SC553
Edited by the Electronicstalk Editorial
Team on 28 January 2002
Adjustable output for compact regulator
New from Semtech is the SC553 ultra-low dropout linear regulator.
New from Semtech is the SC553 ultra-low dropout linear regulator The adjustable SC553 features low quiescent current, low output noise, and a slim profile, making the device ideal for battery-operated portable equipment such as cellular phones and PDAs
This article was originally published on Electronicstalk on 16 Jul 2001 at 8.00am (UK)
Related stories
Low-cost miniature push-pull voltage controller
New from Semtech, the SC4820 is a low-power pulsewidth modulator (PWM) controller intended for power conversion using push-pull or bridge topologies.
Linear FET controllers for space-saving PSU design
Semtech has a new family of linear FET controllers that enable simple, space-saving design of distributed single and dual power supplies on primary and peripheral circuit boards.
The SC553 is pin-compatible with the industry-standard '5205 and '2982, but provides designers with several advantages over similar parts: its PMOS pass transistor keeps supply current independent of load allowing it to consume only 75uA at 150mA and is designed to take advantage of low-cost, space-saving ceramic capacitors.
The device operates from a +2.25 to +6.5V input range, making it well suited for applications with a single li-ion battery.
The SC553 delivers up to 150mA, and the adjust pin (ADJ) enables users to select output voltage from 1.25 to 6V for maximum flexibility.
A low power (0.1uA) shutdown control pin disables the device when its function is not needed.
The device also offers short circuit protection, thermal shutdown protection, and reverse battery protection.
"The total solution using SC553 takes less than 0.1 square inches of board space", said Eddie Yeow, director of portable power management products for Semtech.
"Low power consumption and voltage selection flexibility make the SC553 an excellent choice for cellular phones, PDAs, pagers, modems, PCMCIA cards, and other battery-powered electronics".
Other features of the SC553 include guaranteed 150mA output current, 5-pin SOT-23 surface mount packaging, very small external components and 3% voltage accuracy operation across the full industrial temperature range.
The SC553 in the standard SOT-23-5 package will be available through Semtech's network of direct sales representatives/distributors priced at $0.57 for 10,000 unit quantities.
• Semtech: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
