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BZX100A 数据表(PDF) 6 Page - Linear Technology |
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BZX100A 数据表(HTML) 6 Page - Linear Technology |
6 / 24 page LT8300 6 8300f pin FuncTions EN/UVLO (Pin 1): Enable/Undervoltage Lockout. The EN/UVLO pin is used to enable the LT8300. Pull the pin below 0.3V to shut down the LT8300. This pin has an ac- curate 1.223V threshold and can be used to program a VIN undervoltage lockout (UVLO) threshold using a resistor divider from VIN to ground. A 2.5µA current hysteresis allows the programming of VINUVLOhysteresis.Ifneither function is used, tie this pin directly to VIN. GND (Pin 2): Ground. Tie this pin directly to local ground plane. RFB (Pin 3): Input Pin for External Feedback Resistor. Connect a resistor from this pin to the transformer pri- mary SW pin. The ratio of the RFB resistor to the internal trimmed 12.23k resistor, times the internal bandgap reference, determines the output voltage (plus the effect of any non-unity transformer turns ratio). Minimize trace area at this pin. SW (Pin 4): Drain of the 150V Internal DMOS Power Switch. Minimize trace area at this pin to reduce EMI and voltage spikes. VIN (Pin 5): Input Supply. The VIN pin supplies current to internal circuitry and serves as a reference voltage for the feedback circuitry connected to the RFB pin. Locally bypass this pin to ground with a capacitor. |
类似零件编号 - BZX100A |
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类似说明 - BZX100A |
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