LT3840EFE
ObsoleteIC REGULATOR
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LT3840EFE
ObsoleteIC REGULATOR
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Technical Specifications
Parameters and characteristics for this part
| Specification | LT3840EFE |
|---|---|
| Clock Sync | True |
| Control Features | Soft Start, Power Good, Frequency Control, Enable, Tracking |
| Duty Cycle (Max) [Max] | 99 % |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 50 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive or Negative |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | Exposed Pad, 28-TSSOP |
| Package / Case [custom] | 4.4 mm |
| Package / Case [x] | 0.173 in |
| Supplier Device Package | 28-TSSOP-EP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 60 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.5 V |
LT3840 Series
Wide Input Range Synchronous Regulator Controller with Accurate Current Limit
| Part | Topology | Output Phases | Package / Case | Output Type | Frequency - Switching [Min] | Frequency - Switching [Max] | Operating Temperature [Min] | Operating Temperature [Max] | Mounting Type | Number of Outputs | Control Features | Duty Cycle (Max) [Max] | Supplier Device Package | Function | Output Configuration | Synchronous Rectifier | Clock Sync | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Package / Case [custom] | Package / Case [x] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | Buck | 1 | 38-WFQFN Exposed Pad | Transistor Driver | 50 kHz | 1 MHz | -40 °C | 125 ¯C | Surface Mount | 1 | Enable Frequency Control Power Good Soft Start Tracking | 99 % | 38-QFN (4x6) | Step-Down | Positive or Negative | 2.5 V | 60 V | ||||
Analog Devices | Buck | 1 | 28-TSSOP Exposed Pad | Transistor Driver | 50 kHz | 1 MHz | -55 °C | 150 °C | Surface Mount | 1 | Enable Frequency Control Power Good Soft Start Tracking | 99 % | 28-TSSOP-EP | Step-Down | Positive or Negative | 2.5 V | 60 V | 4.4 mm | 0.173 in | ||
Analog Devices | Buck | 1 | 28-TSSOP Exposed Pad | Transistor Driver | 50 kHz | 1 MHz | -40 °C | 125 °C | Surface Mount | 1 | Enable Frequency Control Power Good Soft Start Tracking | 99 % | 28-TSSOP-EP | Step-Down | Positive or Negative | 2.5 V | 60 V | 4.4 mm | 0.173 in |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
Description
General part information
LT3840 Series
The LT3840 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. High current applications are possible with large N-channel gate drivers capable of driving multiple low RDS(ON)MOSFETs.An integrated buck-boost switching regulator generates a 7.5V bias supply voltage for MOSFET gate drive and IC power allowing higher efficiency operation over the entire input voltage range and eliminating the need for an external bias voltage. An accurate current limit set point regulates the maximum output current. A current monitor reports the average output current.ApplicationsAutomotive SuppliesIndustrial SystemsDistributed DC Power Systems
Documents
Technical documentation and resources
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