Overview
The LM5112SDX/NOPB is a high-performance MOSFET gate driver produced by Texas Instruments. This device is designed to provide high peak gate drive current, making it suitable for high-frequency applications. It is available in a compact 6-pin WSON package (equivalent to a SOT-23 footprint) or an 8-pin exposed-pad MSOP package, which enhances power dissipation. The LM5112 is particularly useful in systems requiring robust and reliable MOSFET gate drive capabilities.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | WSON-6 (3x3 mm) or MSOP-PowerPAD | 6 pins |
| Operating Temperature Range | -40°C to 125°C | |
| Peak Output Current (Source, Sink) | 3 A, 7 A | |
| Supply Voltage Range | 3.5 V to 14 V | |
| Logic Voltage (VIL, VIH) | 0.8 V, 2.3 V | |
| Rise/Fall Time (Typical) | 14 ns, 12 ns | |
| Propagation Delay Time (Typical) | 25 ns | |
| Thermal Resistance (θJA) | 40°C/W (WSON-6), 60°C/W (MSOP-PowerPAD) |
Key Features
- AEC-Q100 Grade 1 Qualified for automotive applications.
- Compound CMOS and bipolar outputs reduce output current variation.
- Fast propagation times: 25 ns (typical) and fast rise and fall times: 14 ns and 12 ns respectively.
- Inverting and non-inverting inputs provide flexibility in gate drive configuration.
- Supply rail undervoltage lockout protection to prevent MOSFET damage.
- Dedicated input ground (IN_REF) for split-supply or single-supply operation.
- Power-enhanced 6-pin WSON package or thermally enhanced MSOP-PowerPAD package.
- Output swings from VCC to VEE, which are negative relative to input ground.
Applications
The LM5112SDX/NOPB is suitable for a variety of high-frequency applications, including:
- Automotive systems: Given its AEC-Q100 Grade 1 qualification, it is ideal for use in automotive electronics.
- Power supplies: High peak current and fast switching times make it suitable for power supply designs.
- Motor control: Used in motor drive circuits due to its ability to handle high-frequency switching.
- Industrial control systems: Applicable in industrial environments requiring robust and reliable gate drive capabilities.
Q & A
- What is the peak output current capability of the LM5112SDX/NOPB?
The LM5112SDX/NOPB can source up to 3 A and sink up to 7 A of peak current.
- What are the operating temperature ranges for this device?
The operating temperature range is -40°C to 125°C.
- What are the typical rise and fall times for the LM5112SDX/NOPB?
The typical rise time is 14 ns, and the typical fall time is 12 ns.
- Does the LM5112SDX/NOPB support both inverting and non-inverting inputs?
Yes, it supports both inverting and non-inverting inputs.
- What is the purpose of the dedicated input ground (IN_REF) pin?
The IN_REF pin allows for split-supply or single-supply operation, providing flexibility in system design.
- Is the LM5112SDX/NOPB qualified for automotive applications?
Yes, it is AEC-Q100 Grade 1 Qualified for automotive applications.
- What are the package options available for the LM5112SDX/NOPB?
It is available in a 6-pin WSON package (3x3 mm) or an 8-pin exposed-pad MSOP package.
- What is the thermal resistance (θJA) of the WSON-6 package?
The thermal resistance (θJA) for the WSON-6 package is 40°C/W.
- Does the LM5112SDX/NOPB have undervoltage lockout protection?
Yes, it has supply rail undervoltage lockout protection to prevent MOSFET damage.
- What is the logic voltage range for the LM5112SDX/NOPB?
The logic voltage range is 0.8 V to 2.3 V.
