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Datasheet Linear Technology LTC3850IGN#TR

Linear Technology LTC3850IGN#TR

Manufacturer:Linear Technology
Series:LTC3850, LTC3850-1
Part Number:LTC3850IGN#TR

Dual, 2-Phase Synchronous Step-Down Switching Controller

Datasheets

  • Download » Datasheet, PDF, 604 Kb, Revision: C
    LTC3850/LTC3850-1 - Dual, 2-Phase Synchronous Step-Down Switching Controller
    Docket ↓
    LTC3850/LTC3850-1
    Dual, 2-Phase
    Synchronous Step-Down
    Switching Controller
    DESCRIPTION FEATURES Dual, 180° 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 ±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)
    IN
    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 × 4mm, 4mm × 5mm QFN and Narrow
    SSOP Packages The LTC®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 ...

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Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck

Other Names: LTC3850IGNTR, LTC3850IGN TR

Docket:
FEATURES LTC3850/LTC3850-1 Dual, 2-Phase Synchronous Step-Down Switching Controller DESCRIPTION
The LTC3850 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. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3850 features a precision 0.8V reference and a power good output indicator. A wide 4V to 24V (28V maximum/30V for LTC3850I) input supply range encompasses most battery chemistries and intermediate bus voltages. Independent TK/SS pins for each controller ramp the output voltages 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 and allows the IC to be synchronized to an external clock. The LTC3850 is available in low profile 28-pin 4mm 4mm, 4mm 5mm QFN and narrow SSOP packages. n 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 24V (30V for LTC3850I) Operation Adjustable Soft-Start Current Ramping or Tracking Foldback Output Current Limiting Output Overvoltage Protection Power Good Output Voltage Monitor 28-Pin 4mm 4mm, 4mm 5mm QFN and Narrow SSOP Packages APPLICATIONS Notebook and Palmtop Computers Portable Instruments Battery-Operated Digital Devices DC Power Distribution S...

  • Series: LTC3850, LTC3850-1 (1)
    • LTC3850IGN#TR
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