LTC3406B
Info: : PRODUCTION
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LTC3406B

1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 6
1ku List Price Starting From $2.63
Features
  • High Efficiency: Up to 96%
  • 600mA Output Current at VIN = 3V
  • 2.5V to 5.5V Input Voltage Range
  • 1.5MHz Constant Frequency Operation
  • No Schottky Diode Required
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 300µA
  • 0.6V Reference Allows Low Output Voltages
  • Shutdown Mode Draws <1µA Supply Current
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Overtemperature Protected
  • Low Profile (1mm) ThinSOT Package
Additional Details
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The LTC3406B is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.5V and 1.8V. Supply current with no load is 300µA and drops to <1µA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3406B ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications.

Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3406B is available in a low profile (1mm) ThinSOT package. Refer to LTC3406 for applications that require Burst Mode® operation.

VOUT FSW Features
LTC3406 Adj. 1.5MHz Burst Mode
LTC3406-1.2 1.2V 1.5MHz Burst Mode
LTC3406-1.5 1.5V 1.5MHz Burst Mode
LTC3406-1.8 1.8V 1.5MHz Burst Mode
LTC3406B Adj 1.5MHz Burst Mode Disabled
LTC3406B-1.2 1.2V 1.5MHz Burst Mode Disabled
LTC3406B-2 Adj. 2.25MHz Burst Mode Disabled
LTC3406A Adj. 1.5MHz Low Ripple Burst Mode
LTC3406AB Adj. 1.5MHz Burst Mode Disabled
LTC3406AB-2 Adj. 2.25MHz Burst Mode Disabled

Applications

  • Cellular Telephones
  • Personal Information Appliances
  • Wireless and DSL Modems
  • Digital Still Cameras
  • MP3 Players
  • Portable Instruments
Part Models 6
1ku List Price Starting From $2.63

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3406BES5#TRMPBF
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LTC3406BES5#TRPBF
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LTC3406BES5-1.5#TRMPBF
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LTC3406BES5-1.5#TRPBF
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LTC3406BES5-1.8#TRMPBF
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LTC3406BES5-1.8#TRPBF
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

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DC500A-F

LTC3406BES5-1.8 Demo Board | 2.7V to 5.5VIN, 1.8VOUT @ 600mA(Max)

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DC500A-F

LTC3406BES5-1.8 Demo Board | 2.7V to 5.5VIN, 1.8VOUT @ 600mA(Max)

LTC3406BES5-1.8 Demo Board | 2.7V to 5.5VIN, 1.8VOUT @ 600mA(Max)

Product Detail

Demonstration circuit DC500 is a constant-frequency step-down converter, using the various versions (fixed output/adjustable output/Burst Mode/Burst Mode defeated) of the LTC3406 or LTC3406B monolithic synchronous buck regulators. The DC500 has an input voltage range of 2.7V to 5.5V, and is capable of delivering up to 600 mA of output current at minimum input voltage of 3V. The DC500A-F features the 1.8V fixed output LTC3406B-1.8 (Burst Mode defeated).

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DC500A-D

LTC3406BES5 Demo Board | 2.7V to 5.5VIN, 1.2VOUT @ 600mA(Max)

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DC500A-D

LTC3406BES5 Demo Board | 2.7V to 5.5VIN, 1.2VOUT @ 600mA(Max)

LTC3406BES5 Demo Board | 2.7V to 5.5VIN, 1.2VOUT @ 600mA(Max)

Product Detail

Demonstration circuit DC500 is a constant-frequency step-down converter, using the various versions (fixed output/adjustable output/Burst Mode/Burst Mode defeated) of the LTC3406 or LTC3406B monolithic synchronous buck regulators. The DC500 has an input voltage range of 2.7V to 5.5V, and is capable of delivering up to 600 mA of output current at minimum input voltage of 3V. The DC500A-D features the adjustable output, LTC3406B (Burst Mode defeated) with the output voltage set to 1.2V.

reference details image

DC500A-E

LTC3406BES5-1.5 Demo Board | 2.7V to 5.5VIN, 1.5VOUT @ 600mA(Max)

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DC500A-E

LTC3406BES5-1.5 Demo Board | 2.7V to 5.5VIN, 1.5VOUT @ 600mA(Max)

LTC3406BES5-1.5 Demo Board | 2.7V to 5.5VIN, 1.5VOUT @ 600mA(Max)

Product Detail

Demonstration circuit DC500 is a constant-frequency step-down converter, using the various versions (fixed output/adjustable output/Burst Mode/Burst Mode defeated) of the LTC3406 or LTC3406B monolithic synchronous buck regulators. The DC500 has an input voltage range of 2.7V to 5.5V, and is capable of delivering up to 600 mA of output current at minimum input voltage of 3V. The DC500A-E features the 1.5V fixed output LTC3406B-1.5 (Burst Mode defeated).

Tools & Simulations

Tools & Simulations 2

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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