Overview
The FAN3111ESX is a high-speed, low-side gate driver designed by onsemi to drive N-channel enhancement-mode MOSFETs in various switching applications. This component is part of the FAN3111 series, which includes different input configurations to cater to various system requirements. The FAN3111ESX specifically features a single, non-inverting, low-voltage input and an external reference voltage input (XREF) for enhanced compatibility with low-voltage controllers.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VDD Supply Voltage Range | 4.5 | 18.0 | V | |
| VIN Input Voltage (FAN3111E) | 0 | VXREF | V | |
| VXREF External Reference Voltage | 2.0 | 5.0 | V | |
| ISINK OUT Current, Mid-Voltage, Sinking | 1.1 | A | ||
| ISOURCE OUT Current, Mid-Voltage, Sourcing | -0.9 | A | ||
| IPK_SINK OUT Current, Peak, Sinking | 1.4 | A | ||
| IPK_SOURCE OUT Current, Peak, Sourcing | -1.4 | A | ||
| tRISE Output Rise Time | 9 | 18 | ns | |
| tFALL Output Fall Time | 8 | 17 | ns | |
| tD1, tD2 Output Propagation Delay | 15 | 30 | ns | |
| Operating Ambient Temperature | -40 | 125 | °C | |
| Package | 5-Pin SOT23 |
Key Features
- Dual input configurations: FAN3111ESX features a single, non-inverting, low-voltage input and an external reference voltage input (XREF) for compatibility with low-voltage controllers.
- High-speed operation: Typical rise and fall times of 9 ns and 8 ns, respectively, with a 470 pF load.
- High current capability: Peak sink/source currents of 1.4 A.
- Wide operating range: VDD supply voltage range from 4.5 V to 18 V.
- Small footprint: 5-pin SOT23 package facilitates distributed drivers for parallel power devices.
- MillerDrive™ architecture: Combines bipolar and MOS devices for large current delivery over a wide range of supply-voltage and temperature variations.
- Input hysteresis: Provides approximately 20% of VXREF for input stability.
- Lead-free and halogen-free: Compliant with environmental regulations.
Applications
- Switch-mode power supplies
- Synchronous rectifier circuits
- Pulse transformer drivers
- Logic to power buffers
- Motor control systems
Q & A
- What is the primary function of the FAN3111ESX?
The FAN3111ESX is designed to drive N-channel enhancement-mode MOSFETs in low-side switching applications.
- What are the input configurations available for the FAN3111 series?
The FAN3111 series offers dual CMOS inputs (FAN3111C) and a single, non-inverting, low-voltage input with an external reference voltage input (FAN3111ESX).
- What is the operating voltage range for the FAN3111ESX?
The VDD supply voltage range is from 4.5 V to 18 V.
- What are the typical rise and fall times for the FAN3111ESX?
The typical rise time is 9 ns, and the typical fall time is 8 ns with a 470 pF load.
- What is the peak current capability of the FAN3111ESX?
The peak sink/source currents are 1.4 A.
- What is the MillerDrive™ architecture, and what does it offer?
The MillerDrive™ architecture combines bipolar and MOS devices to provide large currents over a wide range of supply-voltage and temperature variations.
- What are the key applications for the FAN3111ESX?
Key applications include switch-mode power supplies, synchronous rectifier circuits, pulse transformer drivers, logic to power buffers, and motor control systems.
- What is the package type for the FAN3111ESX?
The FAN3111ESX is available in a 5-pin SOT23 package.
- Is the FAN3111ESX lead-free and halogen-free?
Yes, the FAN3111ESX is lead-free and halogen-free, complying with environmental regulations.
- What are the recommended layout and connection guidelines for the FAN3111ESX?
It is recommended to keep high-current output and power ground paths separate from logic input signals and signal ground paths, and to keep the driver as close to the load as possible to minimize high-current trace lengths.
