IR3312

Data Sheet No.PD60211 rev.D IR3312(S) PROGRAMMABLE CURRENT SENSING HIGH SIDE SWITCH Features Load current feedback Programmable over current shutdown Active clamp E.S.D protection Input referenced to Vcc Over temperatue shutdown Reverse battery protection Product Summary Rds(on) Vcc.op. Current ratio Ishutdown Active clamp Load Dump Package 20mΩ 6 to 28V 2800 3 to 30A 35V 40V Description The IR 3312(S) is a Fully Protected 4 terminal high side switch. The input signal is referenced to Vcc. When the input voltage Vcc - Vin is higher than the specified Vih threshold, the output power MOSFET is turned-on. When Vcc - Vin is lower than the specified Vil threshold, the output MOSFET is turned-off. A sense current proportional to the current in the power Mosfet is sourced to the Ifb pin. Over-current shutdown occurs when Vifb - Vin > 4.5 V. The current shutdown threshold is adjusted by selecting the proper RIfb. Either over-current and over-temperature latches off the switch. The device is reset by pulling the input pin high. Other integrated protections ( ESD, reverse battery, active clamp ) make the IR3312(S) very rugged and suitable for the automotive environment. 5 Lead TO220 IR3312 5 Lead D2Pak (SMD220) IR3312S Typical Connection VCC IN Ifb 10 k IR 3312 OUT LOAD Battery RIfb on off System Ground Power Ground www.irf.com 1 IR3312(S) Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur...