LM2733XMFX Datasheet

DC/DC Switching Controllers


The LM2733XMFX switching regulators are current-mode boostconverters operating fixed frequency of 1.6 MHz (&ldquo;X&rdquo; option)and 600 kHz (&ldquo;Y&rdquo; option).The use of SOT-23 package, made possible by the minimalpower loss of the internal 1A switch, and use of small induc-tors and capacitors result in the industry&rsquo;s highest powerdensity. The 40V internal switch makes these solutions per-fect for boosting to voltages of 16V or greater.These parts have a logic-level shutdown pin that can beused to reduce quiescent current and extend battery life.Protection is provided through cycle-by-cycle current limitingand thermal shutdown. Internal compensation simplifies de-sign and reduces component count. LM2733XMFX Features &bull; 40V DMOS FET switch&bull; 1.6 MHz (&ldquo;X&rdquo;), 0.6 MHz (&ldquo;Y&rdquo;) switching frequency&bull; Low RDS(ON) DMOS FET&bull; Switch current up to 1A&bull; Wide input voltage range (2.7V&ndash;14V)&bull; Low shutdown current (<1 &micro;A)&bull; 5-Lead SOT-23 package&bull; Uses tiny capacitors and inductors&bull; Cycle-by-cycle current limiting&bull; Internally compensated LM2733XMFX Applications &bull; White LED Current Source&bull; PDA&rsquo;s and Palm-Top Computers&bull; Digital Cameras&bull; Portable Phones and Games&bull; Local Boost Regulator


[{"Name":"Number of Outputs","Value":"1"},{"Name":"Voltage - Output","Value":"3 V ~ 40 V"},{"Name":"Voltage - Input","Value":"2.7 V ~ 14 V"},{"Name":"PWM Type","Value":"Current Mode"},{"Name":"Frequency - Switching","Value":"1.6MHz"},{"Name":"Current - Output","Value":"1A"},{"Name":"Synchronous Rectifier","Value":"No"},{"Name":"Operating Temperature","Value":"-40°C ~ 125°C"},{"Name":"Mounting Type","Value":"Surface Mount"}]

Manufacturer information

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