Product Descriptions
The FAN3121 and FAN3122 MOSFET drivers are designed to drive N-channel enhancement MOSFETs in low-side switching applications by providing high peak current pulses. The drivers are available with either TTL input thresholds (FAN312xT) or VDD-proportional CMOS input thresholds (FAN312xC). Internal circuitry provides an under-voltage lockout function by holding the output low until the supply voltage is within the operating range. FAN312x drivers incorporate the MillerDrive? architecture
for the final output stage. This bipolar / MOSFET combination provides the highest peak current during the Miller plateau stage of the MOSFET turn-on / turn-off process.
The FAN3121 and FAN3122 drivers implement an enable function on pin 3 (EN), previously unused in the industry-standard pin-out. The pin is internally pulled up to VDD for active HIGH logic and can be left open for standard operation.
The commercial FAN3121/22 is available in a 3x3 mm 8-lead thermally-enhanced MLP package or an 8-lead SOIC package. The AEC-Q100 automotive-qualified versions are available in the 8-lead SOIC package.
Product Features
? Industry-Standard Pin-out with Enable Input
? 4.5-V to 18-V Operating Range
? 11.4 A Peak Sink at VDD = 12 V
? 9.7-A Sink / 7.1-A Source at VOUT = 6 V
? Inverting Configuration (FAN3121) and Non-Inverting Configuration (FAN3122)
? Internal Resistors Turn Driver Off If No Inputs
? 23-ns / 19-ns Typical Rise/Fall Times (10 nF Load)
? 18 ns to 23 ns Typical Propagation Delay Time
? Choice of TTL or CMOS Input Thresholds
? MillerDrive? Technology
? Available in Thermally Enhanced 3x3 mm 8-Lead MLP or 8-Lead SOIC Package (Pb-Free Finish)
? Rated from –40°C to +125°C
? Automotive Qualified to AEC-Q100 (F085 Versions)
Product Applications
? Synchronous Rectifier Circuits
? High-Efficiency MOSFET Switching
? Switch-Mode Power Supplies
? DC-to-DC Converters
? Motor Control
? Automotive-Qualified Systems (F085 Versions)
Specifications
| Attribute | Attribute value |
| ANSM-Part# | ANSM-FAN3122CMX |
| Category | Integrated Circuits (ICs) |
| Power Management (PMIC) | |
| Gate Drivers | |
| Mfr | onsemi |
| Series | - |
| Package | Tape & Reel (TR) |
| Cut Tape (CT) | |
| Digi-Reel? | |
| Product Status | Active |
| DigiKey Programmable | Not Verified |
| Driven Configuration | Low-Side |
| Channel Type | Single |
| Number of Drivers | 1 |
| Gate Type | N-Channel MOSFET |
| Voltage - Supply | 4.5V ~ 18V |
| Logic Voltage - VIL, VIH | - |
| Current - Peak Output (Source, Sink) | 10.6A, 11.4A |
| Input Type | Non-Inverting |
| Rise / Fall Time (Typ) | 23ns, 19ns |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Product Number | FAN3122 |
Actual product photos

Product Data Book:



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