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LTC4441 Datasheet(PDF) 1 Page - Linear Technology |
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LTC4441 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 12 page  1 44411f LTC4441/LTC4441-1 , LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6677210. The LTC ®4441/LTC4441-1 is an N-channel MOSFET gate driver that can supply up to 6A of peak output current. The chip is designed to operate with a supply voltage of up to 25V and has an adjustable linear regulator for the gate drive. The gate drive voltage can be programmed between 5V and 8V. The LTC4441/LTC4441-1 features a logic threshold driver input. This input can be driven below ground or above the driver supply. A dual function control input is provided to disable the driver or to force the chip into shutdown mode with <12µA of supply current. Undervoltage lockout and overtemperature protection circuits will disable the driver output when activated. The LTC4441 also comes with an open-drain output that provides adjustable leading edge blanking to prevent ringing when sensing the source current of the power MOSFETs. The LTC4441 is available in a thermally enhanced 10-lead MSOP package. The LTC4441-1 is the SO-8 version with- out the blanking function. ■ 6A Peak Output Current ■ Wide VIN Supply Range: 5V to 25V ■ Adjustable Gate Drive Voltage: 5V to 8V ■ Logic Input can be Driven Below Ground ■ 30ns Propagation Delay ■ Supply Independent CMOS/TTL Input Thresholds ■ Undervoltage Lockout ■ Low Shutdown Current: <12µA ■ Overtemperature Protection ■ Adjustable Blanking Time for MOSFET’s Current Sense Signal (LTC4441) ■ Available in SO-8 and 10-Lead MSOP (Exposed Pad) Packages DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO + FB R2 86.6k R6 R3 5mΩ R9 8.06k 4441 TA01 R8 511k R7 R1 330k R5 SHUTDOWN VIN 6V TO 24V SGND CVCC 10µF X5R L1 10µH 20A D1 MBR10100 Si7370 ×2 22µF 25V X7R + COUT VOUT 52V 2A EN/SHDN LTC4441 VIN RBLANK IN DRVCC OUT PGND BLANK R4 100Ω Q2 LTC3803 SWITCHING CONTROLLER GATE SENSE+ GND FB CLOAD (nF) 015 5 10 20253035 45 40 50 4441 TA01b 200 180 80 60 20 40 0 160 140 120 100 TA = 25°C DRVCC = 5V RISE TIME FALL TIME RISE/FALL Time vs CLOAD ■ Power Supplies ■ Motor/Relay Control ■ Line Drivers ■ Charge Pumps N-Channel MOSFET Gate Driver |
Similar Part No. - LTC4441 |
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Similar Description - LTC4441 |
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