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Linear推出採3mm X 3mm DFN封裝的36V 降壓 DC/DC 轉換器(英文內容)
(產品新聞, 2006年9月26日)
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Linear Technology has announced the LT3505, a current mode PWM step-down DC/DC converter with an internal 1.75A power switch, packaged in a tiny 8-lead 3mm x 3mm DFN package. Its wide input range of 3.6V to 36V and capability to withstand 40V transients makes the LT3505 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. For automotive applications, the LT3505's minimum input voltage of 3.6V enables it to operate with sub-4V inputs, paramount for meeting automotive "cold crank" requirements. Similarly, its 40V input capability enables it to withstand transients found in load-dump conditions. Its 200kHz to 3MHz switching frequency is user programmable, enabling it to maximize efficiency while using tiny, low cost inductors and ceramic capacitors, resulting in low predictable output ripple.
The LT3505EDD is available from stock in a thermally enhanced 3mm x 3mm DFN-8 package. A higher temperature grade "I" version, the LT3505IDD, is also available from stock. Pricing starts at $2.40 each and $2.88 each respectively for 1,000-piece quantities.
http://www.linear.com/pc/productDetail.do?navId=H0,C1,C1003,C1042,C1032,C1064,P28312
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