LTC4449EDCB#TRMPBF
ActiveGATE DRIVER, 2 CHANNELS, HIGH SIDE OR LOW SIDE, MOSFET, 8 PINS, DFN-EP
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LTC4449EDCB#TRMPBF
ActiveGATE DRIVER, 2 CHANNELS, HIGH SIDE OR LOW SIDE, MOSFET, 8 PINS, DFN-EP
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC4449EDCB#TRMPBF |
|---|---|
| Channel Type | Synchronous |
| Current - Peak Output (Source, Sink) [custom] | 4.5 A |
| Current - Peak Output (Source, Sink) [custom] | 3.2 A |
| Driven Configuration | Half-Bridge |
| Gate Type | N-Channel MOSFET |
| High Side Voltage - Max (Bootstrap) [Max] | 42 V |
| Input Type | Non-Inverting |
| Logic Voltage - VIL, VIH [custom] | 6.5 V |
| Logic Voltage - VIL, VIH [custom] | 3 V |
| Mounting Type | Surface Mount |
| Number of Drivers | 2 |
| Operating Temperature [Max] | 125 ¯C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 8-WFDFN Exposed Pad |
| Rise / Fall Time (Typ) [custom] | 7 ns |
| Rise / Fall Time (Typ) [custom] | 8 ns |
| Supplier Device Package | 8-DFN (2x3) |
| Voltage - Supply [Max] | 6.5 V |
| Voltage - Supply [Min] | 4 V |
LTC4449 Series
High Speed Synchronous N-Channel MOSFET Driver
| Part | Logic Voltage - VIL, VIH [custom] | Logic Voltage - VIL, VIH [custom] | Driven Configuration | Mounting Type | Voltage - Supply [Min] | Voltage - Supply [Max] | Current - Peak Output (Source, Sink) [custom] | Current - Peak Output (Source, Sink) [custom] | High Side Voltage - Max (Bootstrap) [Max] | Package / Case | Gate Type | Channel Type | Supplier Device Package | Input Type | Rise / Fall Time (Typ) [custom] | Rise / Fall Time (Typ) [custom] | Number of Drivers | Operating Temperature [Min] | Operating Temperature [Max] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices | 6.5 V | 3 V | Half-Bridge | Surface Mount | 4 V | 6.5 V | 4.5 A | 3.2 A | 42 V | 8-WFDFN Exposed Pad | N-Channel MOSFET | Synchronous | 8-DFN (2x3) | Non-Inverting | 7 ns | 8 ns | 2 | -40 °C | 125 ¯C |
Analog Devices | 6.5 V | 3 V | Half-Bridge | Surface Mount | 4 V | 6.5 V | 4.5 A | 3.2 A | 42 V | 8-WFDFN Exposed Pad | N-Channel MOSFET | Synchronous | 8-DFN (2x3) | Non-Inverting | 7 ns | 8 ns | 2 | -40 °C | 125 ¯C |
Analog Devices | 6.5 V | 3 V | Half-Bridge | Surface Mount | 4 V | 6.5 V | 4.5 A | 3.2 A | 42 V | 8-WFDFN Exposed Pad | N-Channel MOSFET | Synchronous | 8-DFN (2x3) | Non-Inverting | 7 ns | 8 ns | 2 | -40 °C | 125 ¯C |
Analog Devices | 6.5 V | 3 V | Half-Bridge | Surface Mount | 4 V | 6.5 V | 4.5 A | 3.2 A | 42 V | 8-WFDFN Exposed Pad | N-Channel MOSFET | Synchronous | 8-DFN (2x3) | Non-Inverting | 7 ns | 8 ns | 2 | -40 °C | 125 ¯C |
Analog Devices | 6.5 V | 3 V | Half-Bridge | Surface Mount | 4 V | 6.5 V | 4.5 A | 3.2 A | 42 V | 8-WFDFN Exposed Pad | N-Channel MOSFET | Synchronous | 8-DFN (2x3) | Non-Inverting | 7 ns | 8 ns | 2 | -40 °C | 125 ¯C |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 5.41 | |
| 10 | $ 3.62 | |||
| 25 | $ 3.16 | |||
| 100 | $ 2.64 | |||
| 250 | $ 2.39 | |||
| Digi-Reel® | 1 | $ 5.41 | ||
| 10 | $ 3.62 | |||
| 25 | $ 3.16 | |||
| 100 | $ 2.64 | |||
| 250 | $ 2.39 | |||
| Tape & Reel (TR) | 500 | $ 2.23 | ||
| 1000 | $ 2.10 | |||
| 1500 | $ 2.04 | |||
| 2500 | $ 1.97 | |||
| 3500 | $ 1.93 | |||
| 5000 | $ 1.91 | |||
Description
General part information
LTC4449 Series
The LTC4449 is a high frequency gate driver that is designed to drive two N-Channel MOSFETs in a synchronous DC/DC converter. The powerful rail-to-rail driver capability reduces switching losses in MOSFETs with high gate capacitance.The LTC4449 features a separate supply for the input logic to match the signal swing of the controller IC. If the input signal is not being driven, the LTC4449 activates a shutdown mode that turns off both external MOSFETs. The input logic signal is internally level-shifted to the bootstrapped supply, which functions at up to 42V above ground.The LTC4449 contains undervoltage lockout circuits on both the driver and logic supplies that turn off the external MOSFETs when an undervoltage condition is present. An adaptive shoot-through protection feature is also built-in to prevent the power loss resulting from MOSFET cross-conduction current.The LTC4449 is available in the 2mm × 3mm DFN package.ApplicationsDistributed Power ArchitecturesHigh Density Power Modules
Documents
Technical documentation and resources