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Datasheet Linear Technology LTC3850IGN-1#TRPBF

ManufacturerLinear Technology
Part NumberLTC3850IGN-1#TRPBF

Dual, 2-Phase Synchronous Step-Down Switching Controller


  • Download » Datasheet, PDF, 604 Kb, Revision: C
    LTC3850/LTC3850-1 - Dual, 2-Phase Synchronous Step-Down Switching Controller
    Docket ↓
    Dual, 2-Phase
    Synchronous Step-Down
    Switching Controller
    DESCRIPTION FEATURES Dual, 180В° Phased Controllers Reduce Required
    Input Capacitance and Power Supply Induced Noise
    n High Efficiency: Up to 95%
    n R
    SENSE or DCR Current Sensing
    n В±1% 0.8V Output Voltage Accuracy
    n Phase-Lockable Fixed Frequency 250kHz to 780kHz
    n Supports Pre-Biased Output
    n Dual N-Channel MOSFET Synchronous Drive
    n Wide V Range: 4V to 24V (30V for LTC3850I)
    Operatio Adjustable Soft-Start Current Ramping or Tracking
    n Foldback Output Current Limiting
    n Output Overvoltage Protectio Power Good Output Voltage Monitor
    n 28-Pin 4mm Г— 4mm, 4mm Г— 5mm QFN and Narrow
    SSOP Packages The LTCВ®3850 is a high performance dual synchronous
    step-down switching regulator controller that drives all
    N-channel power MOSFET stages. A constant-frequency
    current mode architecture allows a phase-lockable frequency of up to 780kHz. Power loss and supply noise are ...



Package CodeGN


ArchitectureConstant Frequency Current Mode
Demo BoardsDC1126A,DC1185B-A,DC1185B-B,DC1231A-A,DC1231A-B,DC1185A-A
Design ToolsLTspice File,LTpowerCAD File
Export Controlno yes/no
FeaturesPolyPhase, DCR Current Sense, Selectable Switching Frequency, External Synchronization, PLL, Tracking, Power Good
Frequency500 kHz
Frequency Adjust Range250kHz - 780kHz
Frequency Sync Range250kHz - 780kHz
Integrated Inductorno yes/no
Ishutdown30 ВµA
Isupply0.85 mA
Max Phases2
Monolithicno yes/no
Number of Outputs2
Operating Temperature Range-40 to 85 °C
Output Current25 A
Output Current 225 A
Polyphaseyes yes/no
Sense ResistorRsense, DCR
Switch Current25 A
Switch Current 225 A
Synchronousyes yes/no
Topology 1Buck
Topology 2Buck
Vin Max24 V
Vin Min4 V
Vout Max6 V
Vout Maximum6V
Vout Min0.8 V
Vout Min 20.8 V
Vref Accuracy Over Temp1 %

Eco Plan


Moldel Line

Series: LTC3850 (16)

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | External Power Switch Buck Controllers

Other Names:


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