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Datasheet Linear Technology LTC3850IGN-2#PBF

Manufacturer:Linear Technology
Series:LTC3850-2
Part Number:LTC3850IGN-2#PBF

Dual, 2-Phase Synchronous Step-Down Switching Controller

Datasheets

  • Download » Datasheet, PDF, 417 Kb
    LTC3850-2 - Dual, 2-Phase Synchronous Step-Down Switching Controller
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    LTC3850-2
    Dual, 2-Phase
    Synchronous Step-Down
    Switching Controller
    DESCRIPTION FEATURES n The LTC®3850-2 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 minimized by operating the two controller output
    stages out of phase. Dual, 180° Phased Controllers Reduce Required
    Input Capacitance and Power Supply Induced Noise
    High Efficiency: Up to 95%
    RSENSE or DCR Current Sensing
    ±1% 0.8V Output Voltage Accuracy
    Phase-Lockable Fixed Frequency 250kHz to 780kHz
    Supports Pre-Biased Output
    Dual N-Channel MOSFET Synchronous Drive
    Wide VIN Range: 4V to 30V Operation
    Adjustable Soft-Start Current Ramping or Tracking
    Foldback Output Current Limiting
    Output Overvoltage Protection
    Power Good Output Voltage Monitor ...

Packaging

PackageSSOP-28
Package CodeGN

Parametrics

ArchitectureConstant Frequency Current Mode
Design ToolsLTspice Model,LTpowerCAD Model
Export Controlno yes/no
FeaturesPolyPhase, DCR Current Sense, Selectable Switching Frequency, External Synchronization, PLL, Tracking, Power Good
Frequency500 kHz
Frequency Sync Range250kHz - 780kHz
Integrated Inductorno yes/no
Ishutdown30 µA
Isupply0.85 mA
Max Phases2
Monolithicno yes/no
Number of Outputs2
Operating Temperature Range-40 to 85 °C
Output Current25 A
Polyphaseyes yes/no
Sense ResistorRsense, DCR
Switch Current25 A
Synchronousyes yes/no
TopologyBuck
Topology 2Buck
Vin Max30 V
Vin Min4 V
Vout Max6 V
Vout Maximum6V
Vout Min0.8 V
Vref Accuracy Over Temp1 %

Eco Plan

RoHSCompliant

Manufacturer's Classification

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

Other Names: LTC3850IGN-2PBF, LTC3850IGN-2 PBF, LTC3850IGN2#PBF, LTC3850IGN 2#PBF

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