SGM25730Q

Active

Automotive Grade

TVS-less Automotive Reverse Battery Protection Ideal Diode Controller

SGM25730Q.PDF

The SGM25730Q, an ideal diode controller used as an ideal diode rectifier with external NMOS, offers low-loss reverse polarity protection, which has a mere 20mV forward voltage drop. Designed for automotive 12V power systems, this solution effectively addresses cold crank challenges through its extended operational capability down to 3.2V input voltage. The controller's minimal voltage loss and robust protection features make it particularly advantageous for vehicle power management applications requiring high reliability under extreme conditions.

Controlling the GATE of MOSFET, the device regulates the 20mV forward voltage drop. During a reverse current event, the SGM25730Q ensures smooth turn-off of the MOSFET, effectively preventing any steady-state reverse current. With a rapid reverse current blocking response time of less than 1.1μs, the device is well-suited for applications requiring output voltage hold-up during ISO7637 pulse tests, as well as during input micro-short and power fail scenarios.

The SGM25730Q integrates the function of V_DS clamp, which enables TVS-less input polarity protection, typically saving 60% PCB space in constrained automotive systems.

This controller incorporates a charge pump gate driver for an external NMOS. Its high voltage rating simplifies system designs for automotive EMC transient interference standard ISO7637. When the enable pin is low, the controller is deactivated and consumes approximately 1μA of current.

The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications.

The SGM25730Q is available in a Green TSOT-23-8 package.

FEATURES

AEC-Q100 Qualified for Automotive Applications
Device Temperature Grade 1
T_A = -40℃ to +125℃
3.2V to 65V Input Range (3.9V Start-Up)
-33V Reverse Voltage Rating
Charge Pump for External NMOS
Regulation of 20mV Forward Voltage Drop from ANODE to CATHODE
1μA Shutdown Current (EN = Low)
80μA Operating Quiescent Current (EN = High)
1.5A Peak Gate Turn-Off Current
Quick Response Time to Reverse Current Blocking: < 1.1μs
Integrated SW Terminal for Battery Voltage Sensing
Compliance with Automotive ISO7637 Transient Requirements in TVS-less Implementation
Available in a Green TSOT-23-8 Package

APPLICATIONS

Automotive Infotainment Systems: Telematics Control and Head Unit
Automotive ADAS Systems: Camera Integration
Automotive USB Hubs
Active ORing for Redundant Power Systems

Ordering Information

Part Number	Status	Package	Pins	Pd-Free	RoHS	REACH	Green	MSL Rating	Operating Temperature Range	Material Content	Reliability Report	Unit Resale Price* (Volume Range: in USD)	Lead Time** (Volume Range: Days)
SGM25730QTN8G/TR	Active	TSOT-23-8	8	YES	YES	YES	YES	MSL3	-40℃ to +125℃	View	View	1-24 units : $1.4/unit 25-99 units : $1.2/unit 100-249 units : $1/unit 250-499 units : $0.8/unit 500-999 units : $0.7/unit 1000-9999 units : $0.52/unit	3K-9K : 14 days 10K-99K : 28 days 100K-999K : 70 days 1000K and above : 98 days

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.