LS12052BD33 Datasheet | Littelfuse

Description Pin # 3,4,5 10 1 2 6,7, 8 Pin Name IN BFET ILIM SS EN OUT GND Description Power input pin. External NFET gate driver. Control an external NFET which can be connected “Back to Back” with the LS12052BD33 output to prevent current flowing from the load to the source. Float this pin if it is not used. Current limit program pin. Program the current limit by connecting a resister to ground. Soft Start time program pin. Connect a capacitor to ground to program the soft start time. Enable interface pin. EN has accurate ON/OFF threshold of 1.29V and 1.19V respectively. Pull it above ON threshold to enable the IC. Pull it below OFF threshold to disable the IC. Power output pin. Ground pin. Ro HS Pb Description The LS12052BD33 family of integrated load switches provides an easy circuit protection to power the system. The device uses few external ponents and provides multiple protection modes. They are a robust defense against overload, short circuit, input voltage surge, excessive inrush current and reverse current blocking with an external NFET. The switch’s low RDS(ON) helps to reduce power loss during normal operation. Current limit level can be set with a single external resistor. Input over voltage events are protected by internal clamp circuitry to a safe output voltage. Programmable soft-start controls the slew rate of the output voltage to limit inrush current during plug in. It integrates thermal fold-back function and over temperature shutdown protection. The BFET pin is provided to drive an external NFET which can be connected “Back to Back” with the LS12052BD33 output. The external NFET gate is driven by BFET to prevent current flow from the load to the source. LS12052BD33 is available in small DFN 3mm x 3mm-10 package. Features and Benefits - Wide Input Voltage Range from 2.7V to 18V - Extremely Low RDS(ON) for the Integrated Protection Switch: 25mΩ - External Programmable Soft Start Time - External Programmable Current Limit - Support...