LTC3376

RECOMMENDED FOR NEW DESIGNS

20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages

Data Sheet (Rev. 0) Product Selection Table
Part Models
2
1ku List Price
Starting From $6.09
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Part Details

  • Wide VIN Range: 3V to 20V
  • Wide VOUT Range: 0.4V to 0.83 • VIN
  • 8× 1.5A Buck Power Stages Configurable as 1 to 4 Output Channels
  • 15 Unique Pin Selectable Output Configurations (1.5A to 12A per Channel)
  • Internal Boost Capacitors for Reduced PCB Space
  • No Load IQ 27µA 1 Buck Enabled; 42µA All Bucks Enabled
  • 1% VOUT Accuracy on All Channels
  • Peak Current Mode Control (Burst Mode® Operation/Forced Continuous)
  • Precision RUN Inputs, Individual PGOOD Outputs for Power Sequencing
  • 1MHz to 3MHz Frequency (RT Programmable, PLL SYNC, or Internal 2MHz Oscillator)
  • TEMP Pin Output Indicates Die Temperature
  • Output Current Monitors
  • Differential Output Sense
LTC3376
20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages
LTC3376 Application Circuit LTC3376 Performance Graph LTC3376 Pin Configuration
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 1

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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC3376

LTpowerCAD 1

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.

LTpowerCAD

LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
DC2966A

LTC3376 Demo Board | 20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages (Configuration CFG[3:0] = 0000)

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Product Details

Demonstration Circuit DC2966A shows the LTC3376 4-channel configurable buck regulator operating in configuration CFG[3:0] = 0000. This sets the LTC3376 to operate as a quad buck with all four possible outputs, each capable of 3A. By default, outputs 1-4 are set at 5V, 3.3V, 2.5V, and 1.8V, respectively.

Outputs can be enabled, disabled, or sequenced individually. By default, all channel inputs are separate but the board can be configured to power all or some channels from a common input. Each channel has a PGOOD LED indicator to show that its output is regulating within the desired range. Switching operation can allow burst mode for high-efficiency operation at low load currents but can also be forced to continuous PWM for more deterministic EMI.

The PCB is laid out on 6 layers and the demonstration circuit provides access to all features of the LTC3376. 
DC2966A
LTC3376 Demo Board | 20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages (Configuration CFG[3:0] = 0000)
DC2966A DC2966A DC2966A

Latest Discussions

3 Years Ago
RE: LTC3376 Vin is 12V,can Vout be 1.1V?
4 Years Ago
RE: LTC3376 in continuous mode
View related discussion on EngineerZone®

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