Boost Converter operates at 1.3 MHz.

Press Release Summary:




Model LT3460 step-up switching regulator, offered in SC-70 or ThinSOT(TM) package, utilizes internal 300 mA switch that delivers output voltages as high as 36 V from input voltages of 2.5-16 V. Switching at 1.3 MHz, product employs constant frequency, current mode control scheme to provide line and load regulation. With 40 mm² package size, unit delivers 70 mA at 12 V from 5 V input and has low current shutdown current of less than 1 µA.



Original Press Release:



Tiny SC70 Boost Converter Operating at 1.3MHz Reduces Circuit Footprint



MILPITAS, CA - May 28, 2003 - Linear Technology Corporation announces the LT3460, a high efficiency, 1.3MHz, constant frequency step-up switching regulator in an SC-70 or ThinSOT(TM) package. The LT3460 utilizes an internal 300mA switch that can deliver output voltages as high as 36V from input voltages of 2.5V to 16V. The LT3460 switches at 1.3MHz, allowing the use of tiny, low cost capacitors and inductors. This constant frequency topology results in low, predictable output noise that can be easily filtered making it ideal for xDSL power supplies and biasing applications for handheld TFT displays.

The LT3460's wide input voltage range of 2.5V to 16V makes it ideal for a wide array of applications, from Li-Ion powered handhelds to industrial instrumentation. A low-profile SC70 or ThinSOT package and tiny externals optimizes the LT3460 for space-constrained applications.

The LT3460's uses a constant frequency, current mode control scheme to provide excellent line and load regulation. Small package size, high level of integration, and the use of tiny surface mount components yield a solution size of less than 40mm2. For applications that require up to 36V from the smallest form factor available, the LT3460 is the ideal solution.

The LT3460 is available from stock in a 6-lead SC70 package or a 5-lead ThinSOT. Pricing starts at $1.60 for 1,000-piece quantities in the SC70 package and $1.50 for the ThinSOT package.

Summary of Features: LT3460

1.3MHz Switching Frequency

300mA Internal Switch Current

High Output Voltage: Up to 36V

Input Voltage Range: 2.5V to 16V

Delivers 70mA at 12V from 5V Input

Low Shutdown Current: <1uA

Uses Tiny, Surface Mount Components

Low Profile (<1mm) SC70 or ThinSOT Package

Company Background

Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators,power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequencydevices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.

READER SERVICE: Call toll-free 1-800-4-LINEAR (for literature only), or go to the company's web site: www.linear.com

Note: LT, AND LTC are registered trademarks of Linear Technology Corp.

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