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ADI LTC3851AEGN#PBF product image
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ADI LTC3851AEGN#PBFRoHS

Manufacturer
ADI
MPN
LTC3851AEGN#PBF
LCSC Part #
C686310
Packaging
SSOP-16-150mil
Customer #
Key Attributes
Synchronous Step-Down Switching Regulator Controller
Datasheetpdf iconADI LTC3851AEGN#PBF
In-Stock: 9
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QtyUnit PriceTotal Amount
1+$ 6.0942$ 6.09
10+$ 5.9466$ 59.47
30+$ 5.8493$ 175.48
100+$ 5.752$ 575.20
Standard Packaging100/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerADI
PackagingSSOP-16-150mil
Synchronous RectifierYes
FeaturesAdjustable current limiting;Adjustable soft-start;Output voltage tracking;Light load efficient mode;Frequency synchronization;Overcurrent Protection;Built-in LDO regulator
Number of Channels1
TopologyBuck
Operating Voltage4V~38V
Switch tube (built-in/external)External
Output Voltage800mV~5.5V
Operating Temperature-40℃~+125℃
Output Current-
Frequency - Switching250kHz~750kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current1.225mA
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Introduction

AI Translation

The LTC3851A is a high performance synchronous 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 750kHz. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3851A features a precision 0.8 reference that is compatible with a wide 4V to 38 input supply range. The TK/SS pin ramps the output voltage during start‑up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The MODE/PLLIN pin selects among Burst Mode operation, pulse-skipping mode or continuous inductor current mode at light loads and allows the IC to be synchronized to an external clock. The LTC3851A contains an improved PLL compared to the LTC3851. The LTC3851A-1 is a version with a power good output signal instead of adjustable current limit.

Features

AI Translation
  • Wide VIN Range: 4V to 38V Operation
  • RSENSE or DCR Current Sensing
  • ±1% Output Voltage Accuracy
  • Phase-Lockable Fixed Frequency: 250kHz to 750kHz
  • Dual N-Channel MOSFET Synchronous Drive
  • Very Low Dropout Operation: 99% Duty Cycle
  • Adjustable Output Voltage Soft-Start or Tracking
  • Output Current Foldback Limiting
  • Output Overvoltage Protection
  • 5V Internal Regulator
  • OPTI-LOOP Compensation Minimizes COUT
  • Selectable Continuous, Pulse-Skipping or Burst Mode Operation at Light Loads
  • Low Shutdown IQ: 20μA
  • VOUT Range: 0.8 to 5.5V
  • Thermally Enhanced 16-Lead MSOP, 16-Lead Narrow SSOP or 3mm × 3mm QFN Package

Applications

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