Date: 12/02/2009

1A and 9A MOSFET gate driver ICs from Fairchild Semiconductor

Fairchild Semiconductor has added new members to its family of low-side MOSFET gate drivers with the addition of the single 1A and 9A drivers to the previously released single 2A, dual 2A and dual 4A drivers. The new FAN31xx are targeted for switch-mode power-supply (SMPS) designs, synchronous rectifiers, pulse transformer drivers and motor control circuits.

Advantages and features of the FAN31xx series include:

1. A maximum voltage rating of 20V
2. Reverse current capability of at least 500mA
3. HBM ESD rating of 4kV or higher
4. Operation from -40° to 125°C.
5. Choice of TTL or CMOS input thresholds for all devices for circuit compatibility.
6. Two inputs for each channel (dual-input or input + enable) on most of the devices to simplify designs.
7. Short, precisely controlled time delays for 1MHz+ switching and for optimizing drive timing to maximize efficiency.
8. MillerDrive compound gate drive architecture, providing efficient current delivery where it is most needed at the Miller plateau voltage region of the MOSFET's switching cycle.
9. The new FAN3111 family provides a strong 1A gate drive in a small five-pin SOT-23 package for gate drive applications or as distributed drivers for parallel power devices.
10. The CMOS input configuration option FAN3111C is offered with dual inputs to allow a non-inverting or an inverting configuration with an enable function.
11. The FAN3111E includes a single, non-inverting input with its thresholds referenced to an external voltage for use with controllers that operate from a lower supply voltage than the driver.
12. FAN3121/22 9A driver family provides solutions for driving large loads with over 10A of peak gate drive current. The pin-out is compatible with many industry standard 6A, 9A and 12A drivers.
13. An enable function for the driver is included on the pin, which previously was left unused in the industry standard pin-out. The enable pin when left open will be internally pulled up for active high logic and can be left open if no enable function is needed.
14. The FAN31xx and FAN32xx series utilizes lead-free (Pb-free) terminals and is characterized for moisture sensitivity in accordance with the Pb-free reflow requirements of the joint IPC/JEDEC standard J-STD-020.

Package: Package options include

1. 2x2 and 3x3 mm MLP
2. SOT-23
3. SOIC-8

Price:
1. US$ 0.33 for FAN3111 Family in SOT23-5 (1000, pcs.)
2. US$ 0.89 for FAN3121/22 Family in SOIC-8 (1000, pcs.)
3. US$ 0.99 for FAN3121/22 Family in MLP-8 (1000, pcs.)

Availability:
1. Samples available now
2. Delivery: 8 weeks ARO