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LT3845 Datasheet High Voltage Synchronous Current Mode Step-down Controller

Manufacturer: Linear Technology (now Analog Devices)

General Description

www.DataSheet4U.com ■ ■ ■ ■ ■ ■ ■ ■ ■ High Voltage Operation: Up to 60V Synchronizable Up to 600kHz Adjustable Constant Frequency: 100kHz to 500kHz Output Voltages Up to 36V Adaptive Nonoverlap Circuitry Prevents Switch Shoot-Through Reverse Inductor Current Inhibit for Discontinuous Operation Improves Efficiency with Light Loads Programmable Soft-Start 120μA No Load Quiescent Current 10μA Shutdown Supply Current 1% Regulation Accuracy Standard Gate N-Channel Power MOSFETs Current Limit Unaffected by Duty Cycle Reverse Overcurrent Protection 16-Lead Thermally Enhanced TSSOP Package, 16-Pin PDIP The LT®3845 is a high voltage, synchronous, current mode controller used for medium to high power, high efficiency supplies.

It offers a wide 4V to 60V input range (7.5V minimum start-up voltage).

An onboard regulator simplifies the biasing requirements by providing IC power directly from VIN.

Key Features

  • LT3845 High Voltage Synchronous Current Mode Step-Down Controller with Adjustable Operating Frequency.

LT3845 Distributor & Price

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More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LT3840 Wide Input Range Synchronous Regulator Controller
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LT3804 Secondary Side Dual Output Controller
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LT3837 Isolated No-Opto Synchronous Flyback Controller
LT3850 2-Phase Synchronous Step-Down Switching Controller
LT3850-1 2-Phase Synchronous Step-Down Switching Controller