Smart switch simplifies automotive power sequencing
A smart load switch from Diodes features low on-resistance for reliable power sequencing and rail control in automotive applications. Designated the DML1012ALDSQ, it integrates an N-channel MOSFET with 8-mΩ RDS(ON), minimizing conduction losses and reducing heat generation. The single-channel device is well suited for ADAS, infotainment platforms, and display clusters.
The switch supports a 0.8-V to 1.5×VBIAS input range and operates from a 3.2-V to 5.5-V bias supply, allowing flexibility across subsystem power rail domains. A junction-to-case thermal resistance of 8°C/W enables up to 6 A of continuous output current under appropriate thermal conditions, while low 28-µA quiescent current from VBIAS improves efficiency during power gating and reduces standby power consumption. Together, these features deliver precise system-level power sequencing.
For automotive power management applications, the DML1012ALDSQ integrates controlled output voltage slew rate, quick output discharge, and undervoltage lockout (UVLO) protection features. Controlled slew rate minimizes inrush current during startup, while quick output discharge fully discharges downstream components during shutdown. UVLO disables operation when the supply voltage falls below a safe threshold, helping ensure predictable system behavior.
Prices for the DML1012ALDSQ start at $0.17 each in 1000-piece quantities.
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