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ADI LTC3856EUH#PBF product image
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ADI LTC3856EUH#PBF

Manufacturer
ADI
MPN
LTC3856EUH#PBF
LCSC Part #
C686386
Packaging
QFN-32-EP(5x5)
Customer #
Key Attributes
2-Phase Synchronous Step-Down DC/DC Controller with Diffamp
Datasheetpdf iconADI LTC3856EUH#PBF
RoHS Compliance1 documents available
In-Stock: 6
6 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
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QtyUnit PriceTotal Amount
1+$ 12.203$ 12.20
10+$ 11.5963$ 115.96
30+$ 10.5436$ 316.31
100+$ 9.6255$ 962.55
Standard Packaging73/Full Tube
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Products Specifications

All
TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/DC DC Switching Controllers
ManufacturerADI
PackagingQFN-32-EP(5x5)
Synchronous RectifierYes
FeaturesAdjustable current limiting;Adjustable soft-start;Output voltage tracking;Light load efficient mode;Frequency synchronization;Output voltage differential sensing
Number of Channels1
TopologyBuck
Operating Voltage4.5V~38V
Switch tube (built-in/external)External
Output Voltage600mV~5V
Operating Temperature-40℃~+125℃@(TJ)
Output Current-
Frequency - Switching250kHz~770kHz
Output TypeAdjustable
FunctionStep-down type
Quiescent Current4mA
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Introduction

AI Translation

The LTC3856 is a single output, dual channel PolyPhase synchronous step-down DC/DC controller that drives all N-channel power MOSFET stages. This device includes a high speed differential amplifier for remote output voltage sense. Power loss and supply noise are minimized by operating the two controller output stages out-of-phase and up to 12-phase operation can be achieved. The LTC3856 monitors the output current by sensing the voltage drop across the output inductor (DCR) or by using a sense resistor. DCR temperature compensation maintains an accurate current sense threshold over a broad temperature range. A constant-frequency, current mode architecture allows a phase-lockable frequency of up to 770kHz. A wide 4.5V to 38V input supply range encompasses most intermediate bus voltages and battery chemistries. Burst Mode operation, continuous or Stage Shedding modes are supported. A TK/SS pin shared by both channels ramps the output voltage during start-up.

Features

AI Translation
  • PolyPhase Controller Reduces Input and Output Capacitance and Power Supply Induced Noise
  • Wide VIN Range: 4.5V to 38V Operation
  • ±0.75%, 0.6V Reference Voltage Accuracy
  • High Efficiency: Up to 95%
  • Programmable Burst Mode Operation or Stage Shedding for Highest Light Load Efficiency
  • Active Voltage Positioning (AVP)
  • RSENSE or DCR Current Sensing
  • Programmable DCR Temperature Compensation
  • Phase-Lockable Fixed Frequency: 250kHz to 770kHz
  • True Remote Sense Differential Amplifier
  • Dual N-Channel MOSFET Synchronous Drive
  • VOUT Range: 0.6 to 5V without Differential Amplifier
  • VOUT Range: 0.6 to 3.3V with Differential Amplifier
  • Adjustable Soft-Start or VOUT Tracking
  • Stackable for Up to 12-Phase Operation
  • 32-Pin (5mm×5mm) QFN and 38-Pin TSSOP Packages

Applications

AI Translation
  • Telecom and Datacom Systems
  • Industrial and Medical Instruments
  • DC Power Distribution Systems
  • Computer Systems