The ICL7667 is a dual monolithic high-speed driver designed to convert TTL level signals into high current outputs at voltages up to 15V. Its high speed and current output enable it to drive large capacitive loads with high slew rates and low propagation delays. With an output voltage swing only millivolts less than the supply voltage and a maximum supply voltage of 15V, the ICL7667 is well suited for driving power MOSFETs in high frequency switched- mode power converters. The ICL7667’s high current outputs minimize power losses in the power MOSFETs by rapidly charging and discharging the gate capacitance. The ICL7667’s inputs are TTL compatible and can be directly driven by common pulse-width modulation control ICs.
The ICL7667 dual monolithic driver converts TTL/CMOS inputs to high‑current outputs suitable for driving power MOSFET gates in switched‑mode power supplies. It operates from a 4.5 V to 15 V supply, offers fast 30 ns rise and fall times with a 1000 pF load, and provides a typical output resistance of 72 Ω.
Key features include low power consumption (4 mW with inputs low), high peak output current (≈300 mA), and built‑in protection against electrostatic discharge. The datasheet also details recommended grounding, bypassing, and output damping techniques to ensure reliable operation in high‑frequency applications.
| Supply Voltage Range | 4.5 V to 15 V |
|---|---|
| Typical Output Resistance | 72 Ω |
| Peak Output Current | ≈300 mA |
| Low Power Consumption (inputs low) | 4 mW |
| Rise/Fall Time (1000 pF load) | 30 ns |
The device can be powered up to 15 V.
The typical output resistance is 72 Ω.
Use a 4.7 µF tantalum capacitor in parallel with a low‑inductance 0.1 µF capacitor.
Short PCB traces, a ground plane, and a series resistor of 10‑30 Ω can reduce ringing.