LINEAR TECH. CORP. : High Efficiency Dual ±3A Synchronous Buck Regulator for ...
Output is capable of operation down to 0.5V to support all DDR standards. The LTC3618 operates from an input voltage range of 2.25V to 5.5V and allows switching frequencies as high as 4MHz, enabling the use of very small external components. This creates a small, compact solution footprint that is preferred for DDR applications requiring ±3A or less current. The internal synchronous top and bottom power switches have an R of only 75mOhm and 55mOhm, respectively. This enables the LTC3618 to attain efficiencies as high as 94%, eliminating the need for an external catch diode and minimizing external component count and board space, as well as generating far less heat than linear regulator solutions.High Efficiency Dual ±3A Synchronous Buck Regulator for page 2
DDR Power &Termination Complies with DDR/DDR2/DDR3 Standards
The LTC3618 utilizes a constant frequency, current-mode architecture. The switching frequency can be set between 400kHz and 4MHz by a single external resistor. This high frequency capability allows use of smaller capacitor values, while maintaining low output voltage ripple. 0°, 90° or 180° of phase shift between the two channels can be selected to minimize input capacitance and current ripple. For noise-sensitive switching applications, the LTC3618 can be synchronized to an external clock up to 4MHz. Forced continuous mode operation helps reduce noise and RF interference. Optional external compensation allows optimization of transient response over a wide range of loads and output capacitors. The device includes an input overvoltage lockout circuit to protect the input supply from back-boosting.
For optimal thermal performance, the LTC3618 is offered in 24-pin thermally enhanced 4mm x 4mm QFN and TSSOP packages. The device is guaranteed for operation from -40°C to 125°C. 1,000-piece pricing starts at $4.10 each. For more information, visit www.linear.com/product/LTC3618 Photo Caption:High Efficiency Dual ±3A Synchronous Buck Regulator for page 3
DDR Power & Termination Complies with DDR/DDR2/DDR3 Standards
About Linear Technology
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for three decades. The Company?
Linear Technology Corporation - News
Linear Technology Corporation introduces the LTC3618, a high-efficiency dual monolithic synchronous step-down switching regulator, capable of generating the supply voltage and the bus termination voltage for DDR/DDR2/DDR3 and future standard memory
Linear Technology Corp.'s (LLTC) fiscal fourth-quarter earnings grew 27% due to a lower tax rate and a prior-year charge, although revenue fell and the chip maker said bookings demand declined toward the end of the quarter. Shares slid 3.9% to $29.98
Because most electronic devices must utilize and convert analog signals, companies like Linear Technology Corp. could be in-line for a strong demand. Linear has posted positive cash flow for 25 years in a row. Linear Technology Corp. research report is
Good day, everyone, and welcome to the Linear Technology Corporation Fiscal 2011 Fourth Quarter Earnings Conference Call. Today's conference is being recorded. At this time, for opening remarks and introductions, I would like to turn the conference
FBR Capital is lowering its price target from $33 to $30 on Linear Technology Corp.. (NASDAQ: LLTC) following in-line quarter results from the company. Says FBR Capital, in the report, “Tuesday, Linear reported in-line calendar 2Q11
LTC5569 Released by Linear Technology Corp |
Recently, Linear Technology Corporation has announced LTC5569, a dual high performance RF mixer. In order to satisfy high density footprints of multimode 4G RRH (Remote Radio Head) MIMO (Multiple-Input, Multiple-Output) receivers, the LTC5569 combines 26.8dBm IIP3 (Input Third Order Intercept), 300mW per mixer, together with wide operating frequency coverage. Since the operating range for this mixer is from 300MHz to 4GHz, just a single part can work on any of the cellular bands from 700MHz to 2.7GHz. While delivering excellent IIP3 with a conversion gain of 2dB as well as a noise figure of 11.7dB, the LTC5569>” target=”_blank” rel=”nofollow”>LTC5569>” rel=”nofollow” target=”_blank”> http://www.hqew.net/article/showdetails-article-203.html>LTC5569> provides best-in-class power consumption, which helps MIMO and various broadband receiver applications realize outstanding dynamic range performance. Besides these, with the robust inputs, the LTC5569 can withstand strong in-band blocking interference signals without degrading its noise figure significantly, which can improve receiver sensitivity.
Meanwhile, the LTC5560, a dual symmetrical active downconverting mixer, has separate baluns on both RF and LO inputs. These ports, exactly matching for 50?, need the least external parts, which could save costs and space for solving solutions. Each LO has single buffer with common input, providing the excellent space between the channels. LO offers single-ended inputs with simple external matching for 50?, no matter the mixer is on or off. Therefore, whether connecting or disconnecting channels, it will not cause loading interference, avoiding PPL (phase lock loop) and VCO circuit unlock. LO input only needs 0dBm level drive, having excellent reverse RF isolation, thus, it can adopt an external VCO circuit driver without external buffer. All these functions enhance this useful solution with the minimum external components.
The LTC5569, double channel mixer with low power and the compact solution, is the optimization model for the new 4G generation pattern receivers. With frequency 300mW every channel, it release the cooling challenge of MIMO RRH design. Meanwhile, this mixer need the least external components, with 4mm x 4mm QFN package, it provides highly compact space solution. Additionally, LTC5569 model can operate in the temperature range from -40°C to 105°C, still reliability in the harsh environment.
Linear Technology Corporation - Bookshelf
International Directory of Company Histories
Linear Technology Corporation, 16 332-34: 99 254-258 (upd.) Linens 'n Things, Inc. 24 289-92; 75 239-43 (upd) Lintas: Worldwide, 14 314-16 The Lion Brewery, ...Linear applications handbook, a guide to linear circuit design 1990
Linear applications handbook, Volume III, a guide to linear circuit design
Analog Circuit Design, Art, Science and Personalities
"Thermal Techniques in Measurement and Control Circuitry," Linear Technology Corporation Application Note 5, Linear Technology Corporation. Milpitas. ...Directory of corporate affiliations
1512 LINEAR TECHNOLOGY CORP.. pg. 1512 LINEAR TECHNOLOGY CORP— See Unear Technology Corp ... 1512 LINEAR TECHNOLOGY К K— See Linear Technology Corp pg. ...Helpful Information Directory
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Linear Technology Corporation (NASDAQ: LLTC, NASDAQ-100) designs, manufactures and markets a broad line of standard high performance analog integrated ...
Linear Technology - 高性能アナログIC
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