Datasheet4U Logo Datasheet4U.com

LT3840 Datasheet Wide Input Range Synchronous Regulator Controller

Manufacturer: Linear Technology (now Analog Devices)

General Description

n Wide Input Range: 2.5V to 60V n Integrated Buck-Boost Supply for 7.5V MOSFET Gate Drive n Programmable Constant-Current Operation with Current Monitor Output n Low IQ: 75µA, 12VIN to 3.3VOUT n Selectable Low Output Ripple Burst Mode® Operation n VOUT Up to 60V n Adjustable and Synchronizable: 50kHz to 1MHz n Internal OVLO Protects for Input Transients Up to 80V n Accurate Input Overvoltage and Undervoltage Threshold n Programmable Soft-Start with Voltage Tracking n Power Good and Output OVP n 28-Lead TSSOP and 38-Lead 4mm × 6mm QFN Packages Applications n Automotive Supplies n Industrial Systems n Distributed DC Power Systems The LT®3840 is a high voltage synchronous step-down switching regulator controller capable of operating from a 2.5V to 60V supply.

The LT3840’s low quiescent current, when configured for user selectable Burst Mode operation, helps extend run time in battery-powered systems by increasing efficiency at light loads.

The LT3840 uses a constant frequency, current mode architecture.

Key Features

  • LT3840 Wide Input Range Synchronous Regulator Controller with Accurate Current Limit.

LT3840 Distributor & Price

Compare LT3840 distributor prices and check real-time stock availability from major suppliers. Prices and inventory may vary by region and order quantity.

More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LT3844 Current Mode Switching Regulator Controller
LT3845 High Voltage Synchronous Current Mode Step-Down Controller
LT3846 Current Mode PWM Controller
LT3847 Current Mode PWM Controller
LT3800 High-Voltage Synchronous Current Mode Step-Down Controller
LT3804 Secondary Side Dual Output Controller
LT3825 Isolated No-Opto Synchronous Flyback Controller
LT3837 Isolated No-Opto Synchronous Flyback Controller
LT3850 2-Phase Synchronous Step-Down Switching Controller
LT3850-1 2-Phase Synchronous Step-Down Switching Controller