dc-dc converter
LT3481H: 34V, 2A (Isw), 2.8MHz Micropower Step-Down DC/DC Converter Offers 150˚C Maximum Junction Temperature Operation
Submitted by Ionela on Thu, 08/28/2008 - 13:22.
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Linear Technology announces the H-Grade version of the LT3481. The LT3481 is a 34V (36V(MAX)), BurstMode, step-down switching regulator that maintains quiescent current under 50uA.The “H” Grade version operates up to a junction temperature of 150˚C, compared to the “E” and “I” Grade versions’ 125˚C maximum junction temperature. All electrical specifications are identical for the E, I and H. The H Grade parts are tested and guaranteed to the maximum junction temperature of 150˚C. They are ideal for automotive, industrial and harsh environment applications that are subject to high ambient temperatures. |
2.2MHz, Dual-Output DC-DC Converters with 80V Load-Dump Protection Are Ideal for Automotive Applications
Submitted by Ionela on Tue, 08/12/2008 - 17:59.
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Maxim Integrated Products introduces the MAX5098A/MAX5099 dual-output, high-switching-frequency DC-DC converters capable of delivering 2A and 1A of output current. Designed to operate directly from a car battery, these converters integrate load-dump protection circuitry to handle transients up to 80V, and they operate down to 4.5V to withstand cold-crank conditions. |
Single-channel, step-up DC-DC converters with integrated FET provide high efficiency and fast transient response
Submitted by Ionela on Wed, 06/18/2008 - 07:28.
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Maxim Integrated Products introduces the MAX17062/MAX17067 single-channel, step-up DC-DC converters with an integrated FET. Designed on Maxim's proprietary BiCMOS process, these devices provide high current density, increased voltage capacity, and improved efficiency for advanced LCD applications. To ensure highly efficient operation and excellent transient response, the MAX17062/MAX17067 employ current-mode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in, n-channel power MOSFET. |
Highly efficient, step-up/down DC-DC converter features seamless transition switching
Submitted by Ionela on Thu, 06/12/2008 - 07:14.
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Maxim Integrated Products introduces the MAX8625A, a single-inductor, H-bridge, step-up/down DC-DC converter with seamless transition switching. Maxim's patented, seamless transition H-bridge topology* utilizes three operating phases during each switching cycle to achieve glitch-free buck-boost transitions, thus ensuring highly efficient switching. The MAX8625A minimizes output-ripple variation in transitions, and provides up to 92% efficiency over a wide, 2.5V to 5.5V input-voltage range. |
LTC3539/-2: 2A, 1MHz Synchronous Boost Regulator Offers Output Disconnect & Soft-Start in a 2mm x 3mm DFN
Submitted by Ionela on Wed, 05/14/2008 - 07:15.
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Linear Technology Corporation announces the LTC3539/-2, 1MHz/2MHz, current mode, synchronous boost DC/DC converters with output disconnect and integrated soft-start. Their internal 2A switches can deliver output voltages as high as 5.25V from an input voltage range of 0.70V at start-up, (0.5V when running) to 5V, making them ideal for Li-Ion/Polymer or single/multicell alkaline/NiMH applications. |
LT3507: 2.5MHz, 36V Triple Step-Down DC/DC Converter with LDO Controller
Submitted by Ionela on Tue, 04/29/2008 - 07:08.
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Compact current sense transformers
Submitted by Ionela on Wed, 04/02/2008 - 07:38.
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EPCOS has developed two series of current sense transformers that thanks to their space-saving SMT design are particularly suitable for compact DC/DC converters. They have dimensions of only 8.33 x 7.11 mm2 and 4.7 x 3.5 mm2, respectively. The primary winding is already integrated in all types, thus saving development and placement times. Both series cover winding ratios from 1:20 to 1:125. |
