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LTC4442IMS8E-1-PBF Datasheet(PDF) 6 Page - Linear Technology |
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LTC4442IMS8E-1-PBF Datasheet(HTML) 6 Page - Linear Technology |
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6 / 12 page  LTC4442/LTC4442-1 6 4442fa BLOCK DIAGRAM PIN FUNCTIONS TG (Pin 1): High Side Gate Driver Output (Top Gate). This pin swings between TS and BOOST. TS (Pin 2): High Side MOSFET Source Connection (Top Source). BG (Pin 3): Low Side Gate Driver Output (Bottom Gate). This pin swings between VCC and GND. GND (Pin 4): Chip Ground. IN (Pin 5): Input Signal. Input referenced to an internal supply powered by VLOGIC (Pin 6) and referenced to GND (Pin 4). If this pin is floating, an internal resistive divider triggers a shutdown mode in which both BG (Pin 3) and TG (Pin 1) are pulled low. Trace capacitance on this pin should be minimized to keep the shutdown time low. VLOGIC (Pin 6): Logic Supply. This pin powers the input buffer and logic. Connect this pin to the power supply of the controller that is driving IN (Pin 5) to match input thresholds or to VCC (Pin 7) to simplify PCB routing. VCC (Pin 7): Output Driver Supply. This pin powers the low side gate driver output directly and the high side gate driver output through an external diode connected between this pin and BOOST (Pin 8). A low ESR ceramic bypass capacitor should be tied between this pin and GND (Pin 4). BOOST (Pin 8): High Side Bootstrapped Supply. An ex- ternal capacitor should be tied between this pin and TS (Pin 2). Normally, a bootstrap diode is connected between VCC (Pin 7) and this pin. Voltage swing at this pin is from VCC – VD to VIN + VCC – VD, where VD is the forward volt- age drop of the bootstrap diode. Exposed Pad (Pin 9): Ground. Must be electrically con- nected to GND (Pin 4) and soldered to PCB ground for optimal thermal performance. 8 1 2 SHOOT- THROUGH PROTECTION THREE-STATE INPUT BUFFER LEVEL SHIFTER INTERNAL SUPPLY UNDERVOLTAGE LOCKOUT UNDERVOLTAGE LOCKOUT BOOST TG TS 3 6 BG 4442 BD VCC 7k 7k VLOGIC 7 VCC 5 IN 4 GND 9 GND |
Similar Part No. - LTC4442IMS8E-1-PBF |
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Similar Description - LTC4442IMS8E-1-PBF |
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