5 Device Comparison Table

Device	Integrated Low Voltage Regulator	Integrated Clamp for Inductive Loads	Fault Diagnosis	Current Limit	Advantage
TPS272C45A	No	Yes	Single FLT pin, SNS pin provides per -ch fault	Dual level, inrush period	Lower device power dissipation with most of the quiescent current drawn from the lower voltage supply input – enables reduced total heat dissipation and thus smaller module sizes. Connect a 3.3V DC-DC regulator output to VDD pin. Single fault pin reduces IO count.
TPS272C45B	Yes	Yes	Single FLT pin, SNS pin provides per -ch fault	Dual level, inrush period	Lower system costs with a single power supply (cost of a low voltage regulator is avoided).
TPS272C45C	Yes	No	Single FLT pin, SNS pin provides per -ch fault	Dual level, inrush period	Enables usage of external TVS Clamp for high inductive loading. The device variant can be used with an external supply on VDD pin or using the internal 3.3-V regulation by GNDing the VDD pin.
TPS272C45D	Yes	Yes	Dual fault FLT1/FLT2 pins	Single level	Dual FLT pins provides easier fault diagnosis. The device variant can be used with an external supply on VDD pin or using the internal 3.3-V regulation by GNDing the VDD pin.