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Datasheet Linear Technology LT1681

Manufacturer:Linear Technology

Dual Transistor Synchronous Forward Controller


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    LT1681 - Dual Transistor Synchronous Forward Controller
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    Dual Transistor
    Synchronous Forward Controller
    U FEATURES High Voltage: Operation Up to 72V
    Synchronizable Operating Frequency and Output
    Switch Phase for Multiple Controller Systems
    Fixed Frequency Operation to 350kHz
    Adaptive and Adjustable Blanking
    Synchronous Rectifier Driver
    Local 1% Voltage Reference
    Undervoltage Lockout Protection with Hysteresis
    Input Overvoltage Protection
    Programmable Start Inhibit
    Transformer Primary Saturation Protection
    Optocoupler Feedback Support
    Soft-Start Control ■
    ■ ■

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Design ToolsLTspice ModelLTspice ModelLTspice ModelLTspice Model
Export Control, yes/nonononono
FeaturesExternal SynchronizationExternal SynchronizationExternal SynchronizationExternal Synchronization
Frequency, kHz350350350350
Frequency Sync RangeUp to 350kHzUp to 350kHzUp to 350kHzUp to 350kHz
Integrated Inductor, yes/nonononono
Isupply, mA17171717
Monolithic, yes/nonononono
Number of Outputs1111
Operating Temperature Range, °C0 to 850 to 85-40 to 85-40 to 85
Output Current, A20202020
Polyphase, yes/nonononono
Switch Current, A20202020
Synchronous, yes/noyesyesyesyes
Vin Max, V72727272
Vin Min, V9999
Vout Max, V64.864.864.864.8
Vout Maximum0.9VIN0.9VIN0.9VIN0.9VIN
Vout Min, V1.


Package CodeSWSWSWSW

Manufacturer's Classification

Switching Regulator

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