LTC3834
Info: : PRODUCTION
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LTC3834

30μA IQ Synchronous Step-Down Controller

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 8
1ku List Price Starting From $4.22
Features
  • Wide Output Voltage Range: 0.8V ≤ VOUT ≤ 10V
  • Low Operating Quiescent Current: 30μA
  • OPTI-LOOP® Compensation Minimizes COUT
  • ±1% Output Voltage Accuracy
  • Wide VIN Range: 4V to 36V
  • 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: 4μA
  • 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
Additional Details
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The LTC3834 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 30μA 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 LTC3834 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 start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. A reduced feature set version of the part (LTC3834-1) is available in a smaller, lower pin count package.

  PHASMD EXTVCC PGOOD PACKAGES
LTC3834 Yes Yes Yes FE20/4mm × 5mm QFN
LTC3834-1 No No No GN16/3mm × 5mm DFN

Applications

  • Automotive Systems
  • Telecom Systems
  • Battery-Operated Digital Devices
  • Distributed DC Power Systems
Part Models 8
1ku List Price Starting From $4.22

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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

LTC3834EFE#PBF

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Filter by Model

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Part Models

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PCN

Apr 6, 2022

- 22_0068

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

LTC3834EFE#PBF

PRODUCTION

LTC3834EFE#TRPBF

PRODUCTION

LTC3834IFE#PBF

PRODUCTION

LTC3834IFE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1344A

LTC3834EFE Demo Board | 30µA IQ, VIN: 4.5V-32V, VOUT: 3.3V/5A

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DC1344A

LTC3834EFE Demo Board | 30µA IQ, VIN: 4.5V-32V, VOUT: 3.3V/5A

LTC3834EFE Demo Board | 30µA IQ, VIN: 4.5V-32V, VOUT: 3.3V/5A

Product Detail

Demonstration circuit 1344A is a low quiescent current step-down DC/DC converter featuring the LTC3834 in a 20-pin TSSOP exposed pad package. The DC1344A is programmed to generate a regulated 3.3V@5A output from a 4.5V to 32V 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.

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