Overview
The FAN3180TSX, produced by onsemi, is a single 2-A low-side gate driver integrated with a 3.3-V Low Drop Out (LDO) regulator. This component is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications. It combines high-speed gate driving capabilities with a stable 3.3-V output voltage regulator, making it suitable for powering external microcontrollers or ASICs. The device features a MillerDrive™ architecture, which enhances switching performance by providing high peak currents during the MOSFET turn-on and turn-off process.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VDD Supply Voltage Range | 4.5 | 18.0 | V | |
| Gate Driver Peak Current (Sinking) | 2.8 | A | ||
| Gate Driver Peak Current (Sourcing) | -2.5 | A | ||
| LDO Output Voltage | 3.267 | 3.300 | 3.333 | V |
| LDO Output Current | 15 | mA | ||
| Operating Temperature Range | -40 | 125 | °C | |
| UVLO Thresholds (VON / VOFF) | 4.75 / 4.55 | V | ||
| Standby Supply Current | 200 | µA | ||
| Output Rise Time (CLOAD=1000 pF) | 19 | 30 | ns | |
| Output Fall Time (CLOAD=1000 pF) | 13 | 25 | ns |
Key Features
- High-Speed Gate Driver: Capable of delivering peak currents of 2.8 A (sinking) and -2.5 A (sourcing) at VDD = 12 V.
- Integrated 3.3-V LDO Regulator: Provides a stable 3.3-V output with ±1% voltage tolerance at 25°C and ±2.5% total variation, capable of sourcing up to 15 mA.
- MillerDrive™ Architecture: Enhances switching performance by providing high peak currents during the MOSFET turn-on and turn-off process.
- TTL-Compatible Input Thresholds: Input thresholds meet industry-standard TTL logic levels, independent of VDD voltage.
- Under-Voltage Lockout (UVLO): Ensures the output remains low until the supply voltage is within the operating range and the first full input pulse is detected.
- Thermal Shutdown: Provides an additional safety feature to prevent overheating.
- Low Standby Current: Maximum standby supply current of 200 µA.
- Wide Operating Temperature Range: Operates from -40°C to +125°C.
Applications
- Gate Drive with Power for MCU: Ideal for applications requiring both a gate driver and a power source for microcontrollers or ASICs.
- Switched-Mode Power Supplies: Suitable for high-frequency power converter designs.
- Consumer Electronics: Used in various consumer electronic devices requiring efficient power management.
- Portable Hand Tools: Applicable in portable hand tools that require reliable and efficient power management.
Q & A
- What is the peak current capability of the FAN3180 gate driver?
The FAN3180 gate driver can deliver a peak current of 2.8 A (sinking) and -2.5 A (sourcing) at VDD = 12 V.
- What is the output voltage and current of the integrated LDO regulator?
The integrated LDO regulator provides a stable 3.3-V output with a maximum current of 15 mA.
- What is the MillerDrive™ architecture and its benefits?
The MillerDrive™ architecture combines bipolar and MOSFET devices to provide high peak currents during the MOSFET turn-on and turn-off process, enhancing switching performance.
- What are the UVLO thresholds for the FAN3180?
The UVLO thresholds are 4.75 V (VON) and 4.55 V (VOFF).
- What is the maximum standby supply current of the FAN3180?
The maximum standby supply current is 200 µA.
- What is the operating temperature range of the FAN3180?
The operating temperature range is from -40°C to +125°C.
- How does the FAN3180 handle thermal issues?
The FAN3180 includes a thermal shutdown feature to prevent overheating.
- What type of input logic does the FAN3180 support?
The FAN3180 supports TTL-compatible input thresholds.
- Can the FAN3180 be used to replace the FAN3100 in existing designs?
- What is the recommended bypass capacitor for the 3.3-V LDO output?
A 0.1 µF ceramic capacitor should be connected between the 3V3 output and GND.
