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LT8330 Datasheet(PDF) 6 Page - Linear Technology |
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LT8330 Datasheet(HTML) 6 Page - Linear Technology |
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6 / 24 page  LT8330 6 8330fa For more information www.linear.com/LT8330 pin FuncTions EN/UVLO: Shutdown and Undervoltage Detect Pin. The LT8330 is shut down when this pin is low and active when this pin is high. Below an accurate 1.6V threshold the part enters undervoltage lockout and stops switching. This allows an undervoltage lockout (UVLO) threshold to be programmed for system input voltage by resistively dividing down system input voltage to the EN/UVLO pin. An 80mV pin hysteresis ensures part switching resumes when the pin exceeds 1.68V. EN/UVLO pin voltage below 0.2V reduces VIN current below 1µA. If shutdown and UVLO features are not required, the pin can be tied directly to system input. FBX: Voltage Regulation Feedback Pin for Positive or Negative Outputs. Connect this pin to a resistor divider between the output and GND. FBX reduces the switching frequency during start-up and fault conditions when FBX is close to GND. GND: Ground Connection for the LT8330. The DFN pack- age has the best thermal performance due to an exposed pad (Pin 9) on the bottom of the package. This exposed pad must be soldered to a ground plane. Pin 5 of the DFN package (and Pin 2 of the TSOT package) should also be connected to a ground plane. The ground plane should be connected to large copper layers to spread heat dissipated by the LT8330. INTVCC: Regulated 3V Supply for Internal Loads. The INTVCCpinmustbebypassedwithaminimum1µFlowESR ceramic capacitor to ground. No additional components or loading is allowed on this pin. NC: No Internal Connection. Tie directly to local ground. SW: The Output of Internal Power Switch. Minimize the metal trace area connected to this pin to reduce EMI. VIN: Input Supply. This pin must be locally bypassed. Be sure to place the positive terminal of the input capacitor as close as possible to the VIN pin, and the negative terminal as close as possible to the GND pin. |
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Similar Description - LT8330 |
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