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Power/Alternative Energy  

Dual DC/DC converters deliver up to 1.6A

Posted: 12 Oct 2006     Print Version  Bookmark and Share

Keywords:Linear Tech  LT3506  LT3506A  DC/DC converters 

Linear Technology Corp. has announced the LT3506 and LT3506A, dual current mode PWM step-down DC/DC converters with two 2A power switches. Each channel is capable of delivering up to 1.6A of output current. Their input range of 3.6-25V makes these DC/DC converters suitable for regulating power from a wide variety of sources, including four cell batteries, 5V and 12V rails, unregulated wall transformers, lead acid batteries and distributed power supplies.

The LT3506 switches at 575kHz while the LT3506A switches at 1.1MHz, enabling the use of tiny, low-cost inductors and ceramic capacitors while delivering low, predictable output ripple. The LT3506 and LT3506A's low VCESAT (210mV at A) internal switches promise efficiencies of up 88 per cent, minimising thermal constraints and maximising battery run-time.

Low voltage outputs are addressed by an internal reference of 0.80V. Each channel has independent shutdown and soft-start pins as well as independent power good indicators to ease power sequencing. The channels switch 180° out of phase with respect to the other, reducing input ripple and minimising capacitance needs. Internal cycle-by-cycle current limit provides protection against shorted outputs while soft-start eliminates input current surge during start up. The low current (<30µA typ) shutdown provides easy power management in battery-powered systems.

The LT3506EDHD and LT3506AEDHD are both available from stock in a thermally enhanced 5-by-4mm DFN-16 package. Pricing starts at Rs.136.32 ($2.95) each for 1,000-piece quantities.




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Related Datasheets
Part Number Description Category
LT3506 Dual Monolithic 1.6A Step-Down Switching Regulator ICs, Interface
LT3506A Dual Monolithic 1.6A Step-Down Switching Regulator ICs, Interface

 
 
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