High-current buck regulators claim 97% efficiency
Keywords:synchronous? buck regulator? PowerWise?
The regulators are suited for FPGAs, ASICs and microprocessors used in low-voltage applications including wireless, networking and optical communications infrastructure.
Highlights of the devices are integrated high-side and low-side FETs; 12A and 15A output current for the LM21212-1 and LM21215, respectively; efficiency greater than 97 percent from a 5V input to 3.3V output; input voltage range of 2.95V to 5.5V; output voltage down to 0.6V; programmable overcurrent protection feature; and an internal over voltage protection circuit.
The high-current synchronous buck regulators come in 4.4 x 6.5 x 0.9mm package. Priced at $3.85 and $4.15 for the LM21212-1 and LM21215 respectively, in quantities of 1,000, they are available now in 20-pin thermally-enhanced TSSOP packages. A version of the LM21212-1 with adjustable switching frequency will be available in March 2011.
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