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ADI LTC3854IDDB#TRPBF product image
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ADI LTC3854IDDB#TRPBF

Manufacturer
ADI
MPN
LTC3854IDDB#TRPBF
LCSC Part #
C686373
Packaging
DFN-12-EP(2x3)
Customer #
Key Attributes
1 Step-down type DFN-12-EP(2x3) DC DC Switching Controllers RoHS
DatasheetADI LTC3854IDDB#TRPBF
RoHS Compliance1 documents available
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QtyUnit Price(Reference Only)Total Amount
1+$ 2.2998$ 2.30
10+$ 1.9512$ 19.51
30+$ 1.7322$ 51.97
100+$ 1.5086$ 150.86
500+$ 1.4083$ 704.15
1,000+$ 1.3651$ 1365.10
Standard Packaging2500/Full Reel
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerADI
PackagingDFN-12-EP(2x3)
Synchronous RectifierYes
FeaturesAdjustable soft-start;Overcurrent Protection;Built-in LDO regulator
Number of Channels1
TopologyBuck
Operating Voltage4.5V~38V
Switch tube (built-in/external)External
Output Voltage-
Operating Temperature-40℃~+85℃@(TA)
Output Current-
Frequency - Switching400kHz
Output Type-
FunctionStep-down type
Quiescent Current-
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Introduction

AI Translation

The LTC3854 is a high performance synchronous stepdown switching DC/DC controller that drives an all Nchannel synchronous power MOSFET stage. The LTC3854 features a 400kHz constant frequency current mode architecture. The LTC3854 operates from a 4.5V to 38V (40V absolute maximum) input voltage range and regulates the output voltage from 0.8V to 5.5V. The RUN/SS pin provides both soft-start and enable features. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. Current foldback limits MOSFET dissipation during short circuit conditions. Current foldback functions are disabled during soft-start. The LTC3854 has a minimum on-time at 75ns, making it well suited for high step-down ratios. The strong onboard MOSFET drivers allow the use of high power external MOSFETs to produce output currents up to 20A.

Features

AI Translation
  • Wide Operating VIN Range: 4.5V to 38V
  • RSENSE or DCR Current Sensing ±1%
  • 0.8V Reference Accuracy Over Temperature
  • 400kHz Switching Frequency
  • Dual N-channel MOSFET Synchronous Drive
  • Very Low Dropout Operation: 97% Duty Cycle
  • Starts Up Into Pre-Biased Output
  • Adjustable Output Voltage
  • Soft-Start
  • Output Current Foldback Limiting (Disabled During Soft-Start)
  • Output Overvoltage Protection
  • 5V LDO for External Gate Drive
  • OPTI-LOOP Compensation Minimizes COUT
  • Low Shutdown IQ: 15µA
  • Tiny Thermally Enhanced 12-Pin 2mm×3mm DFN and MSOP Packages

Applications

AI Translation
  • Automotive Systems
  • Telecom Systems
  • Industrial Equipment
  • Distributed DC Power Systems