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 (FAN312xT) or CMOS (FAN312xC) input thresholds. 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 FAN3121/22 is available in a 3x3mm 8-lead thermally-enhanced MLP package or an 8-lead SOIC package.
Feature
- Industry-Standard Pin-out with Enable Input
- 4.5 to 18V Operating Range
- 11.4A Peak Sink at VDD = 12V
- 9.7A Sink / 7.1A Source at VOUT = 6V
- Inverting Configuration (FAN3121) and Non-Inverting Configuration (FAN3122)
- Internal Resistors Turn Driver Off If No Inputs
- 23ns/19ns Typical Rise/Fall Times with 10nF Load
- 20ns Typical Propagation Delay Time
- Choice of TTL or CMOS Input Thresholds
- MillerDrive™ Technology
- Available in Thermally Enhanced 3x3mm 8-Lead MLP or 8-Lead SOIC Package (Pb-Free Finish)
- Rated from –40°C to +125°C
Applications
- AC-DC Merchant Power Supply - Servers & Workstations
