LTC Announces New LT3470 Micropower DC-DC Converter
Linear Technology Corp. (LTC, Milpitas, CA) announced its new LT3470, a 40 V micropower, step-down, dc-dc converter with integrated boost and catch diodes in a ThinSOT™ package. It operates from input voltages of 4 V to 40 V, delivering up to 200 mA of output current, optimizing it for two-cell, lithium-ion (Li-Ion), wall-adapter or automotive power sources. Burst Mode® operation reduces quiescent current to 26 µA, making it suitable for applications such as always-on automotive systems. With an entire solution footprint of 50 mm², the LT3470 works well in space-constrained applications.
The LT3470 utilizes a hysteretic control scheme in conjunction with Burst Mode operation to provide low output ripple (less than 10 mVp-p) and low quiescent current, while using a tiny inductor and ceramic capacitor. Integrated boost and catch diodes reduce external component count and solution size. Finally, fast current limiting and hysteric control protects the LT3470 and external components against shorted outputs, even at 40 V.
The LT3470 in a ThinSOT package is available from stock. Pricing starts at $2.30 each for 1,000-piece quanties.
