LM74701QDDFRQ1
ActiveAUTOMOTIVE 3.2-V TO 65-V REVERSE BATTERY PROTECTION IDEAL DIODE CONTROLLER WITH INTEGRATED VDS CLAMP
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LM74701QDDFRQ1
ActiveAUTOMOTIVE 3.2-V TO 65-V REVERSE BATTERY PROTECTION IDEAL DIODE CONTROLLER WITH INTEGRATED VDS CLAMP
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM74701QDDFRQ1 |
|---|---|
| Applications | Redundant Power Supplies |
| Current - Supply | 80 µA |
| Delay Time - OFF | 450 ns |
| Delay Time - ON | 1.4 µs |
| FET Type | N-Channel |
| Grade | Automotive |
| Internal Switch(s) | True |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | SOT-23-8 Thin, TSOT-23-8 |
| Qualification | AEC-Q100 |
| Ratio - Input:Output [custom] | 1:1 |
| Supplier Device Package | TSOT-23-8 |
| Type | N+1 ORing Controller |
| Voltage - Supply [Max] | 65 V |
| Voltage - Supply [Min] | 3.2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.37 | |
| 10 | $ 2.13 | |||
| 25 | $ 2.00 | |||
| 100 | $ 1.71 | |||
| 250 | $ 1.60 | |||
| 500 | $ 1.40 | |||
| 1000 | $ 1.16 | |||
| Digi-Reel® | 1 | $ 2.37 | ||
| 10 | $ 2.13 | |||
| 25 | $ 2.00 | |||
| 100 | $ 1.71 | |||
| 250 | $ 1.60 | |||
| 500 | $ 1.40 | |||
| 1000 | $ 1.16 | |||
| Tape & Reel (TR) | 3000 | $ 1.08 | ||
| 6000 | $ 1.04 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.46 | |
| 100 | $ 1.20 | |||
| 250 | $ 0.86 | |||
| 1000 | $ 0.65 | |||
Description
General part information
LM74701-Q1 Series
The LM74701-Q1 is an automotive AEC Q100 qualified ideal diode controller which operates in conjunction with an external N-channel MOSFET as an ideal diode for low loss reverse polarity protection with a 20-mV forward voltage drop. LM74701-Q1 is suitable for input protection of 12-V automotive systems. The 3.2-V input voltage support is particularly well suited for severe cold crank requirements in automotive systems.
The device controls the GATE of the MOSFET to regulate the forward voltage drop at 20 mV. The regulation scheme enables graceful turn-off of the MOSFET during a reverse current event and ensures zero DC reverse current flow. Fast response (< 0.75 µs) to reverse current blocking makes the device suitable for systems with output voltage holdup requirements during ISO7637 pulse testing as well as power fail and input micro-short conditions. The LM74701-Q1 has a unique integrated VDS clamp feature which enables users to achieve TVS less input polarity protection solution and save on average a typical 60% of PCB space in constrained automotive systems.
The LM74701-Q1 controller provides a charge pump gate drive for an external N-channel MOSFET. With the enable pin low, the controller is off and draws approximately 1 µA of current.