LM74202QPWPRQ1

1 Features

· AEC-Q100 qualified for automotive applications

  -Temperature grade 1:-40℃S TAS+125℃

  -AEC-Q100-012 short circuit reliability Grade A

  -HBM ESD classification level2

  -CDM ESD classification level C6

· 4.2-V to 40-V operating voltage,42-V maximum

· Integrated reverse input polarity protection down to-40V

· Integrated back-to-back MOSFETs with 150 m2total RON

· Transient immunity up-to 55V

· 0.1-A to 2.23-A adjustable current limit (±5% accuracy at 1A)

· Load protection during ISO7637 and ISO16750-2 testing

· Short to battery and short to ground protection

· Reverse current blocking for protection from output short to battery

· IMON current indicator output(±8.5% accuracy)

· Low quiescent current (285 uA in operating,16 uA in shutdown)

· Adjustable UVLO, OVP cut off, inrush current control

· Selectable current-limiting fault response options (auto-retry, latch off, CB modes)

· Available in easy to use 16-Pin HTSSOP package

2 Applications

· Front camera, Rear camera

· Drive assist ECU

· Telematics control unit

· Cellular module asset tracking

3 Description 

The LM74202-Q1 device is a compact, feature-rich 40-V integrated ideal diode with a full suite of protection features. The wide supply input range allows control of 12-V automotive battery driven applications. The device withstands and protects theloads from positive and negative supply voltages up to ±40 V. Load, source and device protection are provided with many programmable features includingovercurrent, inrush current control, overvoltage and undervoltage thresholds. The internal robust protection control blocks along with the 40-V rating of the device simplifies the system design for ISO standard pulse tesing.

A shutdown pin provides external control for enablingand disabling the internal FETs and places the device in a low current shutdown mode. For system status monitoring and downstream load control, the deviceprovides fault output and precise current monitor output. The MODE pin allows flexibility to configurethe device between the three current-limiting fault responses(circuit breaker, latch off, and auto-retry modes). The device monitors Vuy and Voup to provide reverse current blocking when V(IN)<(V(OUT)-10mV). This function protects system bus from overvoltages during output short to battery faults and also helps in voltage holdup requirements during power fail and brownout conditions.

The device is available in a 5 mm ×4.4 mm 16-pin HTSSOP and is fully specified over a-40℃ to +125℃ temperature range.

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