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Linear Tech LDOs withstand up to 80V input

Posted: 31 Mar 2006     Print Version  Bookmark and Share

Keywords:LT3012B  LT3013B  low dropout regulator  Linear Technology 

Linear Technology Corp. announced the LT3012B and LT3013B micropower low dropout regulator with input voltage capability up to 80V. The products have a low dropout voltage of 400mV, while delivering up to 250mA of output current. According to Linear, the wide VIN capability of 4V to 80V makes these devices ideal for automotive, 48V telecom backup supplies and industrial control applications. Additionally, their low quiescent current of 40μA (operating) make them suitable for battery-powered "keep alive" systems that require extended run times. The LT3013B's Powergood flag features programmable delay to indicate output regulation.

The products operate with very small ceramic output capacitors. They are said to be stable with a 3.3μF output capacitor compared to regulator devices requiring between 10μF and 100μF. The LT3012B and LT3013B do not require added series resistance common to other regulators. Internal protection circuitry includes reverse-battery protection, current limiting thermal limiting and reverse-current protection.

The LT3012BEDE/LT3013BEDE and LT3012BEFE/LT3013BEFE are available with an adjustable output from 1.24V up to 60V. Available from stock, the devices are offered in the low profile (0.75mm) 12-lead DFN (4-by-3mm) package and the 16-lead thermally-enhanced TSSOP package. 1,000-piece pricing is Rs.90.71 ($2.05) for the LT3012BEDE, Rs.97.35 ($2.20) for the LT3012BEFE, Rs.99.56 ($2.25) for the LT3013BEDE and Rs.106.20 ($2.40) for the LT3013BEFE.

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Related Datasheets
Part Number Description Category
LT3013B 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD ICs, Interface
LT3012B 250mA, 4V to 80V Low Dropout Micropower Linear Regulator ICs, Interface



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