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Product category: Power Supply ICs and Controllers
News Release from: Linear Technology Corp | Subject: LT1912
Edited by the Electronicstalk Editorial Team on 07 April 2008

Wide-input regulator handles automotive
supplies

Small-footprint step-down switching regulator is ideal for load dump and cold-crank conditions found in automotive applications.

Available now from Linear Technology, the LT1912 is a 2A, 36V step-down switching regulator packaged in a 3 x 3mm DFN (or MSOP-10E) The provision of a 3.6 to 36V input voltage range makes the LT1912 ideal for load dump and cold-crank conditions found in automotive applications

It has a 3.2A internal switch that can deliver up to 2A of continuous output current to voltages as low as 0.79V.

Switching frequency is user-programmable from 200 to 500kHz, optimising efficiency and keeping external components small.

The combination of the 3 x 3mm DFN-10 package (or thermally enhanced MSOP-10E) and tiny externals provide a very compact, thermally efficient footprint.

The LT1912 uses a high-efficiency 3.2A, 0.25ohm switch, with the necessary boost diode, oscillator, control and logic circuitry integrated on-chip.

Special design techniques and a new high voltage process enable high efficiency over a wide input voltage range, and the LT1912's current mode topology enables fast transient response and excellent loop stability.

Other features include external synchronisation (from 250 to 500kHz), a power good flag and soft-start capability.

The LT1912EDD and LT1912EMSE are priced starting at US $2.95 and $3.05 each, respectively, for 1000-piece quantities.

The LT1912IDD and LT1912IMSE, tested and guaranteed to operate from a -40 to +125C operating junction temperature, are priced at US $3.54 and $3.66 each, respectively in 1000-piece quantities.

All versions are available from stock. Request a free brochure from Linear Technology Corp ...

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