HD70804QASSOP16P

The HD70xx4 is an automotive-grade single-channel intelligent high-side switch with input control pin compatible with 3V and 5V CMOS interfaces and a single-channel output.Widely used in automotive 12V grounded load applications such as seat heating, the HD70xx4Q provides further intelligent protection and diagnostic functions. The HD70xx4Q integrates advanced protection features including load overcurrent limiting protection, relative overtemperature protection, and thermal shutdown protection. In addition, the HD70xx4Q internally integrates a dedicated multi-function multiplexed analog output pin, IS, which provides sophisticated diagnostic functions, including high-precision proportional load current detection, output overload and short-to-ground alarms, as well as diagnostics for VCC shorts and open-circuit diagnostics for OFF states. The input SEN pin is the detection enable pin of the HD70xx4Q, which can further disable the diagnostic functions in OFF state for lower power consumption. In addition, in scenarios where multiple HD70xx4Qs are used in the same system, in addition to saving power consumption, SEN enables multiple HD70xx4Qs with only one ADC sampling channel and one IS to ground resistor, greatly optimizing the system implementation cost. Currently, the HD70xx4Q dual-channel series consists of two models, HD70504 and HD70804, which correspond to four internal resistors of 50 and 80mΩ, respectively.