LTC3835
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LTC3835

Low IQ Synchronous Step-Down Controller

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 12
1ku List Price Starting From $4.25
Features
  • Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V
  • Low Operating Quiescent Current: 80μA
  • OPTI-LOOP® Compensation Minimizes COUT
  • 1% Output Voltage Accuracy
  • Wide VIN Range: 4V to 36V Operation
  • Phase-Lockable Fixed Frequency 140kHz to 650kHz
  • Dual N-Channel MOSFET Synchronous Drive
  • Very Low Dropout Operation: 99% Duty Cycle
  • Adjustable Output Voltage Soft-Start or Tracking
  • Output Current Foldback Limiting
  • Power Good Output Voltage Monitor
  • Clock Output for PolyPhase® Applications
  • Output Overvoltage Protection
  • Low Shutdown IQ: 10μA
  • Internal LDO Powers Gate Drive from VIN or VOUT
  • Selectable Continuous, Pulse-Skipping or Burst Mode® Operation at Light Loads
  • Small 20-Lead TSSOP or 4mm × 5mm QFN Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3835 is a high performance step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. A constant-frequency current mode architecture allows a phase-lockable frequency of up to 650kHz.

The 80μA no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3835 features a precision 0.8V reference and a power good output indicator. The 4V to 36V input supply range encompasses a wide range of battery chemistries.

The TRACK/SS pin ramps the output voltage during startup. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

Comparison of LTC3835 and LTC3835-1
PART # CLKOUT/PHASMD EXTVCC PGOOD PACKAGES
LTC3835 Yes Yes Yes FE20/4 × 5 QFN
LTC3835-1 No No No GN16/3 × 5 DFN

Applications

  • Automotive Systems
  • Telecom Systems
  • Battery-Operated Digital Devices
  • Distributed DC Power Systems

All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including 5408150, 5481178, 5705919, 5929620, 6304066, 6498466, 6580258, 6611131.
Part Models 12
1ku List Price Starting From $4.25

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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

Apr 6, 2022

- 22_0068

Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC3835EFE#PBF

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LTC3835EFE#TRPBF

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Filter by Model

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Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC3835EFE#PBF

PRODUCTION

LTC3835EFE#TRPBF

PRODUCTION

LTC3835IFE#PBF

PRODUCTION

LTC3835IFE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC967B

LTC3835EFE Demo Board | 4.5V ≤ VIN ≤ 36V, VOUT = 3.3V @ 5A

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DC967B

LTC3835EFE Demo Board | 4.5V ≤ VIN ≤ 36V, VOUT = 3.3V @ 5A

LTC3835EFE Demo Board | 4.5V ≤ VIN ≤ 36V, VOUT = 3.3V @ 5A

Product Detail

Demonstration circuit 967B is a single output high frequency step-down DC/DC controller featuring the low quiescent current LTC3835 in a 20-pin exposed pad TSSOP package. The DC967B is designed to generate a regulated 3.3V@5A output from 4.5V to 36V input voltage.

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.

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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