ZHCS530I September 2007 – January 2018 LM3102
PRODUCTION DATA.
請參考 PDF 數據表獲取器件具體的封裝圖。
A startup regulator is integrated within the LM3102. The input pin VIN can be connected directly to a line voltage up to 42 V. The VCC output regulates at 6 V, and is current limited to 65 mA. Upon power up, the regulator sources current into an external capacitor CVCC, which is connected to the VCC pin. For stability, CVCC must be at least 680 nF. When the voltage on the VCC pin is higher than the UVLO threshold of 3.75 V, the main MOSFET is enabled and the SS pin is released to allow the soft-start capacitor CSS to charge.
The minimum input voltage is determined by the dropout voltage of the regulator and the VCC UVLO falling threshold (?3.7 V). If VIN is less than ?4.0 V, the regulator shuts off and VCC goes to zero.