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LTC4416 数据表(PDF) 1 Page - Linear Technology |
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LTC4416 数据表(HTML) 1 Page - Linear Technology |
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1 / 12 page  LTC4416/LTC4416-1 4416fa 36V, Low Loss Dual PowerPath Controllers for Large PFETs The LTC®4416/LTC4416-1 control two sets of external P-channelMOSFETstocreatetwonearidealdiodefunctions forpowerswitchovercircuits.Thispermitshighlyefficient OR’ing of multiple power sources for extended battery life and low self heating. When conducting, the voltage drop acrosstheMOSFETistypically25mV.Forapplicationswith a wall adapter or other auxiliary power source, the load is automaticallydisconnectedfromthebatterywhentheaux- iliarysourceisconnected. The LTC4416 integrates two interconnected PowerPathTM controllers with soft switchover control. The “soft-off” switchover permits the users to transfer between two dis- similar voltages without excessive voltage undershoot (or VDROOP)intheoutputsupply.TheLTC4416/LTC4416-1also containa“fast-on”featurethatdramaticallyincreasesgate drivecurrentwhentheforwardinputvoltageexceeds25mV. The LTC4416 “fast off” feature is engaged when the sense voltageexceedstheinputvoltageby25mV.TheLTC4416-1 enables the fast off under the same conditions and when the other external P-channel device is selected using the enablepins. Thewideoperatingsupplyrangesupportsoperationfromone toeightLi-Ioncellsinseries.Thelowquiescentcurrent(35µA perchannel)isindependentoftheloadcurrent.Thegatedriver includesaninternalvoltageclampforMOSFETprotection. TheLTC4416/LTC4416-1areavailableinlowprofile10-lead MSOPpackages. ■ High Current PowerPath Switch ■ Industrial and Automotive Applications ■ Uninterruptible Power Supplies ■ Logic Controlled Power Switch ■ Battery Backup System ■ Emergency Systems with Battery Backups ■ Designed Specifically to Drive Large and Small QG PFETs ■ Very Low Loss Replacement for Power Supply OR’ing Diodes ■ Wide Operating Voltage Range: 3.6V to 36V ■ –40°C to 125°C Operating Temperature Range ■ Reverse Battery Protection ■ Automatic Switching Between DC Sources ■ Low Quiescent Current: 35µA per Channel ■ Load Current Sharing ■ MOSFET Gate Protection Clamp ■ Precision Input Control Comparators for Setting Switchover Threshold Points ■ Open-Drain Feedback Points for Customer Specified Hysteresis Control ■ Minimal External Components ■ Space Saving 10-Lead MSOP Package Automatic PowerPath Switchover APPLICATIO S FEATURES DESCRIPTIO TYPICAL APPLICATIO , LT, LTc and LTM are registered trademarks of Linear Technology corporation. PowerPath is a trademark of Linear Technology corporation. All other trademarks are the property of their respective owners. LTC4416 PRIMARY SUPPLY BACKUP SUPPLY V2 = 10.8V V1 = 12V (FAIL) V1 = 13.5V (RESTORE) SUP75P03_07 SUP75P03_07 E1 GND E2 H2 H1 V1 G1 VS G2 V2 24.9k 187k 221k V1 GND V2 VS 4416 TA01 FORWARD VOLTAGE (V) 0.02 0 8.0 3.6 cONSTANT RON 4416 TA01b 0.5 cONSTANT VOLTAGE ScHOTTKY DIODE LTc4416 LTC4416 vs Schottky Diode Forward Voltage Drop LTC4416-1 H1 E1 GND E2 H2 G1 V1 VS V2 G2 182k 24.3k 24.9k GND VIN 187k VTH1 WITH HYSTERESIS VTH2 WITH HYSTERESIS VOUT TO LOAD 4416 TA01c 75k 221k UV ENABLED AT 5V, VIN RESTORED TO LOAD WHEN VIN RISES TO 5.5V OV ENABLED AT 13.5V, VIN RESTORED TO LOAD WHEN VIN FALLS TO 12V Under and Overvoltage Shutdown Operation |
类似零件编号 - LTC4416_15 |
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类似说明 - LTC4416_15 |
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