LM74700QDBVRQ1 Diode Controller: 12V, Pinout, Datasheet

The LM74700QDBVRQ1 is an automotive AEC Q100 qualified ideal diode controller that functions as an ideal diode rectifier in conjunction with an external N-channel MOSFET to provide low loss reverse polarity protection with a 20-mV forward voltage drop. Many standard DC bus voltages, such as 12-V, 24-V, and 48-V automotive battery systems, can be controlled by the wide supply input range of 3.2 V to 65 V. The 3.2-V input voltage support is ideal for harsh cold crank needs in automobile systems. The device is capable of withstanding and protecting loads from negative supply voltages as low as –65 V.

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• AEC-Q100 qualified with the following results

– Device temperature grade 1:

–40°C to +125°C ambient operating temperature range

– Device HBM ESD classification level 2

– Device CDM ESD classification level C4B

• Functional Safety-Capable

– Documentation available to aid functional safety system design

• 3.2-V to 65-V input range (3.9-V start up)

• –65-V reverse voltage rating

• Charge pump for external N-Channel MOSFET

• 20-mV ANODE to CATHODE forward voltage drop regulation

• Enable pin feature

• 1-µA shutdown current (EN=Low)

• 80-µA operating quiescent current (EN=High)

• 2.3-A peak gate turnoff current

• Fast response to reverse current blocking:< 0.75 µs

• Meets automotive ISO7637 transient requirements with a suitable TVS Diode

• Available in 6-pin and 8-pin SOT-23 Package 2.90mm × 1.60 mm

• Automotive ADAS systems - camera

• Automotive infotainment systems - digital cluster,

head unit

• Industrial factory automation - PLC

• Enterprise power supplies

• Active ORing for redundant power

LM74700QDBVRQ1 Typical Application Circuit

Texas Instruments Incorporated (TI) is an American technology company based in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology products including calculators, micro-controllers, and multi-core processors. The company boasts 45,000 patents around the globe as of 2016.