LT3470A

PRODUCTION

Micropower Buck Regulator with Integrated Boost and Catch Diodes

Part Models
12
1ku List Price
Starting From $2.95

Part Details

  • Low Quiescent Current: 35µA at 12VIN to 3.3VOUT
  • Integrated Boost and Catch Diodes
  • Input Range: 4V to 40V
  • 3.3V at 250mA from 4V to 40V Input
  • 5V at 250mA from 5.7V to 40V Input
  • Low Output Ripple: <10mV
  • <1µA in Shutdown Mode
  • Output Voltage: 1.25V to 16V
  • Hysteretic Mode Control
    • Low Ripple Burst Mode® Operation at Light Loads
    • Continuous Operation at Higher Loads
  • Solution Size as Small as 50mm2
  • Low Profile (0.75mm) 2mm × 3mm Thermally Enhanced 8-Lead DFN Package
  • AEC-Q100 Qualified for Automotive Applications
LT3470A
Micropower Buck Regulator with Integrated Boost and Catch Diodes
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Documentation

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Hardware Ecosystem

Parts Product Life Cycle Description
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PowerPath, Ideal Diodes, and Load Switches 1
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Tools & Simulations

LTspice 2


Models for the following parts are available in LTspice:

  • LT3470
  • LT3470A
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
SCP-LT3470A-BEVALZ

LT3470A Signal Chain Evaluation Board | Micropower Buck Converter

Product Details

Demonstration circuit SCP-LT3470A-BEVALZ is a 40V micropower DFN buck regulator featuring the LT3470A. The board is optimized for 3.3V output at up to 250mA load current for a steady state input voltage range of 4V to 36V.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

  • SCP-INPUT-EVALZ
  • SCP-OUTPUT-EVALZ
  • SCP-1X5BKOUT-EVALZ
  • SCP-THRUBRD-EVALZ
  • SCP-FILTER-EVALZ
  • SCP-1X2BKOUT-EVALZ
  • SCP-5X1-EVALZ

 

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the LT3470A. Please refer to the LT3470A data sheet for a complete description of the part.

eval board
DC1382A

LT3470AEDDB Demo Board | (DFN) 4V ≤ VIN ≤ 36V, VOUT = 3.3V @ 250mA, Integrated Boost and Catch Diodes

Product Details

Demonstration circuit 1382 is a 40V micropower DFN buck regulator featuring the LT3470A. The LT3470A has a higher peak switch current and improved start-up and dropout compared with the non-"A" version. The demo board is optimized for 3.3V output at up to 250mA load current for a steady state input voltage range of 4V to 36V. With its wide input voltage range, high efficiency internal power switch, extremely low dropout operation, hysteretic current-mode, integrated boost and catch diodes and tiny DFN package, the LT3470A is a very versatile and powerful IC for DC/DC converters that require extremely compact space, high efficiency and high input voltage.

SCP-LT3470A-BEVALZ
LT3470A Signal Chain Evaluation Board | Micropower Buck Converter
DC1382A
LT3470AEDDB Demo Board | (DFN) 4V ≤ VIN ≤ 36V, VOUT = 3.3V @ 250mA, Integrated Boost and Catch Diodes

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