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Datasheet Linear Technology LTC3892

ManufacturerLinear Technology
SeriesLTC3892

60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller

Datasheets

  • Download » Datasheet, PDF, 1.4 Mb, Revision: C, File uploaded 09-24-2017
    LTC3892/LTC3892-1/LTC3892-2 - 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
    Docket ↓
    LTC3892/
    LTC3892-1/LTC3892-2
    60V Low IQ, Dual, 2-Phase
    Synchronous Step-Down
    DC/DC Controller
    DESCRIPTION FEATURES
    Wide VIN Range: 4.5V to 60V (65V Abs Max)
    nn Wide Output Voltage Range: 0.8V ≤ V
    OUT ≤ 99% VIN
    nn Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE)
    nn No External Bootstrap Diodes Required
    nn Low Operating I : 29μA (One Channel On)
    Q
    nn Selectable Gate Drive UVLO Thresholds
    nn Out-of-Phase Operation Reduces Required Input
    Capacitance and Power Supply Induced Noise
    nn Phase-Lockable Frequency: 75kHz to 850kHz
    nn Selectable Continuous, Pulse Skipping or Low Ripple
    Burst Mode® Operation at Light Loads
    nn Selectable Current Limit (LTC3892/LTC3892-2)
    nn Very Low Dropout Operation: 99% Duty Cycle
    nn Power Good Output Voltage Monitors (LTC3892/LTC3892-2)
    nn Low Shutdown I : 3.6μA ...

Prices

Packaging

Parametrics

LTC3892EUH#PBFLTC3892EUH#TRPBFLTC3892HUH#PBFLTC3892HUH#TRPBFLTC3892IUH#PBFLTC3892IUH#TRPBFLTC3892MPUH#PBFLTC3892MPUH#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493ADC1998A,DC2190A-A,DC2190A-B,DC2493A
Design ToolsLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD FileLTspice File,LTpowerCAD File
Export Controlnononononononono
FeaturesBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power GoodBurst Mode, PolyPhase, Resistor Set Frequency, External Synchronization, Tracking, Power Good
Frequency, kHz900900900900900900900900
Frequency Adjust Range50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz50kHz - 900kHz
Frequency Sync Range75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz75kHz - 850kHz
Integrated Inductornononononononono
Ishutdown, A3.63.63.63.63.63.63.63.6
Isupply, mA0.0340.0340.0340.0340.0340.0340.0340.034
Max Phases22222222
Monolithicnononononononono
Number of Outputs22222222
Operating Temperature Range, °C0 to 850 to 85-40 to 125-40 to 125-40 to 85-40 to 85-55 to 125-55 to 125
Output Current, A1515151515151515
Output Current 2, A1515151515151515
Polyphaseyesyesyesyesyesyesyesyes
Sense ResistorRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCRRsense, DCR
Switch Current, A1515151515151515
Switch Current 2, A1515151515151515
Synchronousyesyesyesyesyesyesyesyes
TopologyBuckBuckBuckBuckBuckBuckBuckBuck
Topology 1BuckBuckBuckBuckBuckBuckBuckBuck
Topology 2BuckBuckBuckBuckBuckBuckBuckBuck
Vin Max, V6060606060606060
Vin Min, V4.54.54.54.54.54.54.54.5
Vout Max, V59.459.459.459.459.459.459.459.4
Vout Max 2, V59.459.459.459.459.459.459.459.4
Vout Maximum0.99Vin0.99Vin0.99Vin0.99Vin0.99Vin0.99Vin0.99Vin0.99Vin
Vout Min, V0.80.80.80.80.80.80.80.8
Vout Min 2, V0.80.80.80.80.80.80.80.8
Vref Accuracy Over Temp, %1.51.51.51.51.51.51.51.5

Eco Plan

Other Options

LTC3892-1 LTC3892-2

Design Notes

  • Download » Design Notes - DN562, PDF, 307 Kb, 03-31-2017
    60V Low IQ, Dual Output Synchronous Step-Down Controller with Adjustable Gate Drive
    Docket ↓
    60V Low IQ, Dual Output Synchronous Step-Down Controller
    with Adjustable Gate Drive
    Design Note 562
    Victor Khasiev
    Introduction
    The LTC ®3892 is a dual output synchronous buck
    controller featuring a wide input voltage range of
    4.5V to 60V and an output voltage of 0.8V to 99%
    of VIN. The combination of the LTC3892’s built-in
    FET drivers and external FETs yield high efficiency
    and high power capability, up to 97% efficiency and
    over 60A output current 2. Its robust design—an IC
    operating junction temperature range of –55°C to
    150°C—meets the needs of industrial, automotive,
    telecom, military, aerospace and distributed systems. and 3.9µA shutdown current, maintaining battery
    charge as long as possible. The LTC3892’s wide
    input voltage range satisfies the demanding requirements of industrial and automotive applications,
    which are distinguished by their lack of stable, high
    quality voltage sources. For example, in automotive
    environments, a 12V nominal voltage rail can range
    from a low 5V to above 50V during cold starts and
    load dumps. The LTC3892’s ability to sustain the
    output in the face of high voltage inputs eliminates ...

Moldel Line

Series: LTC3892 (8)

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers | Multiple Output Buck
  • Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators

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