DC to DC Power Supplies (Converters)
DC/DC Regulator operates up to 24 Vout without hot spots.
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Press Release Summary:
Housed in 15 x 15 x 2.8 mm LGA package, uModule(TM) LTM4607 can regulate output voltage from variable input voltage greater than, less than, or equal to output voltage. Unit operates from 4.5-36 VIN, regulates output voltage from 0.8-24 V, and delivers up to 190 W. Integrating synchronous buck-boost DC/DC controller, 4 N-channel MOSFETs, I/O bypass capacitors, and compensation circuitry, unit is suited for networking, automotive systems, and high-power battery-operated devices.
Original Press Release:
97% Efficient, Buck-Boost DC/DC uModule Regulator Operates with up to 36VIN & 24VOUT without Hot Spots
MILPITAS, CA - Novmeber 12, 2007 - Linear Technology Corporation introduces the latest device in its family of DC/DC uModule(TM) regulator systems that can regulate an output voltage from a variable input voltage greater than, less than or equal to the output voltage. The LTM4607 is designed for higher voltage systems and operates from 4.5VIN to 36VIN, regulates an output voltage from 0.8V to 24V, and delivers output power up to 190W. The LTM4607 integrates a synchronous buck-boost DC/DC controller, four N-channel MOSFETs, input and output bypass capacitors and all compensation circuitry in a 15mm x 15mm x 2.8mm land grid array (LGA) plastic molded package. Only an inductor, feedback and sense resistors, and bulk capacitors are required to implement a very low profile, compact and high efficiency design. The LTM4607 provides a compact regulator solution for applications such as networking, industrial, automotive systems and high power battery-operated devices.
The LTM4607's on-board proprietary 4-switch synchronous MOSFET design achieves up to 92% efficiency in boost mode (VIN: 5V, VOUT: 16V, IOUT: 2.5A) and up to 97.7% efficiency in buck mode (VIN: 32V, VOUT: 20V, IOUT: 8A). Unlike other topologies such as SEPIC (Single Ended Primary Inductor Converter), which require up to 20 components and custom magnetics, the LTM4607 buck-boost uModule solution uses only 8 components and an off-the-shelf inductor. In addition, the efficiency of a comparable SEPIC circuit is only 76% to 84%. Furthermore, to reduce undesirable frequency harmonics, the LTM4607 is phase-lockable to an external clock frequency ranging from 200kHz to 400kHz. Safety features include overvoltage and foldback current protection.
The LTM4607 is offered for operation from -40°C to 85°C temperature range. 1,000-piece pricing starts at $21.55.
Summary of Features: LTM4607
Single Inductor Buck-Boost Architecture
Synchronous 4-Switch Operation for High Efficiency (up to 97%)
Wide Input Voltage Range: 4.5V to 36V
Wide Output Voltage Range: 0.8V to 24V
Current Mode Control
15mm x 15mm x 2.8mm LGA Package
About Linear Technology
Linear Technology Corporation, a manufacturer of high performance linear integrated circuits, was founded in 1981, became a public company in 1986 and joined the S&P 500 index of major public companies in 2000. Linear Technology products include high performance amplifiers, comparators, voltage references, monolithic filters, linear regulators, DC-DC converters, battery chargers, data converters, communications interface circuits, RF signal conditioning circuits, and many other analog functions. Applications for Linear Technology's high performance circuits include telecommunications, cellular telephones, networking products such as optical switches, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, security monitoring devices, high-end consumer products such as digital cameras and MP3 players, complex medical devices, automotive electronics, factory automation, process control, and military and space systems. For more information, visit www.linear.com.
LT, LTC, LTM and are registered trademarks and uModule is a trademark of Linear Technology Corp.
North America and General Information
John Hamburger
Tel: (408) 432-1900 ext. 2419
jhamburger@linear.com
Doug Dickinson
Tel: (408) 432 1900 ext. 2233
ddickinson@linear.com
