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Datasheet Linear Technology LTC3421

ManufacturerLinear Technology
SeriesLTC3421

3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect

Datasheets

  • Download » Datasheet PDF, 246 Kb, File uploaded: Sep 21, 2017
    LTC3421 - 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect
    Docket ↓
    LTC3421
    3A, 3MHz Micropower
    Synchronous Boost Converter
    with Output Disconnect
    U FEATURES
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    в–  DESCRIPTIO The LTCВ®3421 is a high efficiency, current mode, fixed
    frequency, step-up DC/DC converter with true output disconnect and inrush current limiting. The device includes a ...

Prices

Packaging

LTC3421EUF#PBFLTC3421EUF#TRPBF
Package4x4 QFN-24
Package Outline Drawing
4x4 QFN-24
Package Outline Drawing
Package CodeUFUF
Package Index05-08-169705-08-1697
Pin Count2424

Parametrics

LTC3421EUF#PBFLTC3421EUF#TRPBF
ArchitectureConstant Frequency Current ModeConstant Frequency Current Mode
Demo BoardsDC565ADC565A
Design ToolsLTspice ModelLTspice Model
Export Controlnono
FeaturesOutput Disconnect, Burst Mode, Resistor Set Frequency, External SynchronizationOutput Disconnect, Burst Mode, Resistor Set Frequency, External Synchronization
Frequency, kHz30003000
Frequency Adjust Range100kHz - 3MHz100kHz - 3MHz
Frequency Sync Range100kHz - 3MHz100kHz - 3MHz
Integrated Inductornono
Ishutdown, µA0.10.1
Isupply, mA0.0120.012
Monolithicyesyes
Number of Outputs11
Operating Temperature Range, °C0 to 850 to 85
Polyphasenono
Switch Current, A4.24.2
Synchronousyesyes
TopologyBoostBoost
Vin Max, V4.54.5
Vin Min, V0.50.5
Vin Min Startup, V0.880.88
Vout Max, V5.255.25
Vout Min, V2.42.4
Vswitch Max, V66

Eco Plan

LTC3421EUF#PBFLTC3421EUF#TRPBF
RoHSCompliantCompliant

Articles

  • Download » Articles - LT Journal PDF, 84 Kb, File published: May 1, 2004
    LCD Power Supply Provides ±15V Plus LED Driver
    Docket ↓
    DESIGN IDEAS LCD Power Supply Provides
    В±15V Plus LED Driver
    VIN
    2.7V
    TO 4.2V L1
    10ВµH
    CIN
    4.7ВµF
    6.3V 15mA SW1 VOUT1 VIN
    SHDN1 SHDN2
    SW2 374k
    1% D2 C1
    0.1ВµF L2
    10ВµH C2
    0.1ВµF B0540W CLED
    0.47ВµF
    16V VREF
    FB2 GND LED1 LED2 LED3 R1
    82.5 FB1 LT3463 COUT1, COUT2:
    CLED:
    L1, L2:
    LED1–LED3:
    10pF ...
  • Download » Articles - LT Journal PDF, 137 Kb, File published: May 1, 2004
    Synchronous Boost Converter with Output Disconnect Delivers 4W from Two Cells
    Docket ↓
    DESIGN IDEAS Synchronous Boost Converter
    with Output Disconnect
    Delivers 4W from Two Cells by Dongyan Zhou
    Introduction
    Portable, battery-powered devices require power supplies that are efficient
    and small. The LTC3421 synchronous
    boost converter offers both. It features
    a low, 12ВµA quiescent current in Burst
    Mode operation, greatly improving battery life in applications that spend
    much of their time in low power mode.
    The LTC3421 itself is small, available
    in a small 4mm Г— 4mm QFN package,
    and its oscillator frequency can be programmed or synchronized up to 3MHz,
    which minimizes the size of external
    components. It can drive power hungry
    circuits with its 3A guaranteed switch
    current—up to 4W output power from
    two NiCd or NiMH cells.
    In a conventional synchronous
    boost converter, the internal body
    diode of the synchronous rectifier
    connects the input supply through the
    inductor to the load. The peak inrush ...

Moldel Line

Series: LTC3421 (2)

Manufacturer's Classification

  • Power Management > Switching Regulator > Step-Up (Boost) Regulators > Micropower Boost | Internal Power Switch Boost

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