LTC3709
Info: : PRODUCTION
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LTC3709

Fast 2-Phase, No RSENSE, Synchronous DC/DC Controller with Tracking/Sequencing

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 4
1ku List Price Starting From $5.89
Features
  • PolyPhase® Valley Current Mode Controller
  • Synchronizable to an External Clock with PLL
  • Coincident or Ratiometric Tracking
  • Sense Resistor Optional
  • 2% to 90% Duty Cycle at 200kHz
  • tON(MIN) < 100ns
  • True Remote Sensing Differential Amplifier
  • High Efficiency at Both Light and Heavy Loads
  • Power Good Output Voltage Monitor
  • 0.6V ±1% Reference
  • Adjustable Current Limit
  • Programmable Soft-Start and Operating Frequency
  • Output Overvoltage Protection
  • Optional Short-Circuit Shutdown Timer
  • 32-Lead (5mm × 5mm) QFN Package
Additional Details
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The LTC3709 is a single output, dual phase, synchronous step-down switching regulator. The controller uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in input supply voltage. An internal phase-locked loop allows the LTC3709 to be synchronized to an external clock.

A TRACK pin is provided for tracking or sequencing the output voltage among several LTC3709 chips or an LTC3709 and other DC/DC regulators. Soft-start is accomplished using an external timing capacitor.

Fault protection is provided by an output overvoltage comparator and an optional short-circuit shutdown timer. The current limit level is user programmable. A wide supply range allows voltages as high as 31V to step down to 0.6V.

Protected by U.S. Patents, including 5481178, 6476589, 6144194, 5847554, 6177678, 6304066, 6580258, 6674274, 6462525, 6593724.

Applications

  • Notebook Computers
  • Power Supply for DSP, ASIC, Graphic Processors
Part Models 4
1ku List Price Starting From $5.89

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Nov 18, 2019

- 19_0266

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC3709EG#PBF

PRODUCTION

LTC3709EG#TRPBF

PRODUCTION

Jan 20, 2022

- 21_0269

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Nov 18, 2019

- 19_0266

arrow down

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC3709EG#PBF

PRODUCTION

LTC3709EG#TRPBF

PRODUCTION

Jan 20, 2022

- 21_0269

arrow down

Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC793A

LTC3709EUH | Single Output, Dual Phase Synchronous Buck Converter, 7V to 24VIN, 1.5VOUT @ 30A

Tools & Simulations

Tools & Simulations 1

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.

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