DC1037 - LT3470 Evaluation Kit

Features

  • LT3470 Evaluation Kit
  • Disclaimer: Linear Technology cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Linear Technology product. No circuit patent licenses are implied. Linear Technology reserves the right to change the circuitry and specifications without notice at any time.

Typical Application

DC1037
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Description

Demonstration circuit 1037 is a 40V micropower DFN buck regulator featuring the LTÆ3470. The board is optimized for 5V output at up to 200mA load current for a steady state input voltage range of 5.5V to 40V. With its wide input voltage range, high efficiency internal power switch, low dropout operation, hysteretic current-mode, integrated boost and catch diodes and tiny SOT-23 package, the LT3470 is a very versatile and powerful IC for DC/DC converters that require extremely compact space, high efficiency and high input voltage.

The LT3470 hysteretic control scheme allows all of the components to be small, surface mount devices while providing minimum output ripple voltage at all load currents. The current-mode control topology creates fast transient response and good loop stability with a minimum number of external components. The low resistance internal power switch achieves high efficiencies of up to 82% at 12V input. The shutdown jumper can be used to place the part in micropower shutdown, reducing supply current to less than 1µA by driving the pin low. The internal boost and catch diodes simplify layout and reduce component count, providing the smallest solution possible.

The LT3470 datasheet gives a complete description of the part, operation and applications information. The datasheet must be read in conjunction with this Quick Start Guide for demonstration circuit 1037. In particular, the datasheet section on ëThermal Calculationsí is important for estimating whether a given applicationís combination of input voltage, load current, ambient temperature and frequency will cause the LT3470 to exceed itís absolute maximum rated junction temperature. The LT3470EDDB is assembled in a small low profile DFN package. Proper board layout is essential for maximum thermal performance. See the datasheet section "Layout Considerations".

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Packaging

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Order Info

Evaluation Kits

Part Number Description Price
DC1037A LT3470EDDB | Micropower Buck Reg w/ Integrated Boost & Catch Diodes $75.00
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Applications

 
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Simulate

 
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