Overview
The LM5110-1MX from Texas Instruments is a dual 5-A compound gate driver designed to replace industry standard gate drivers with improved peak output current and efficiency. This device features two independent and identical driver channels, each capable of driving N-channel MOSFETs. The LM5110 combines MOS and bipolar transistors in its output stages to optimize current capability over a wide output voltage and operating temperature range. It is available in SOIC-8 and WSON-10 packages, offering flexibility in design and application.
Key Specifications
| Specification | Value |
|---|---|
| Output Current Capability | 5A sink / 3A source |
| Propagation Times | 25 ns typical |
| Rise and Fall Times | 14 ns / 12 ns with 2 nF load |
| Supply Voltage Range | 3.5 V to 14 V |
| Operating Temperature Range | -40°C to 125°C |
| Package Types | SOIC-8, WSON-10 (4 mm × 4 mm) |
| UVLO Threshold | 2.7 V to 2.9 V |
| Shutdown Current |
Key Features
- Independently drives two N-channel MOSFETs
- Compound CMOS and bipolar outputs reduce output current variation
- Two channels can be connected in parallel to double the drive current
- Independent inputs (TTL compatible)
- Dedicated input ground pin (IN_REF) for split supply or single supply operation
- Outputs swing from VCC to VEE, which can be negative relative to input ground
- Available in dual noninverting, dual inverting, and combination configurations
- Shutdown input provides low power mode
- Supply rail undervoltage lockout protection
- Pin-out compatible with industry standard gate drivers
Applications
- Synchronous rectifier gate drivers
- Switch-mode power supply gate drivers
- Solenoid and motor drivers
Q & A
- What is the output current capability of the LM5110?
The LM5110 can sink up to 5A and source up to 3A of current. - What are the typical propagation times for the LM5110?
The typical propagation times are 25 ns. - What are the rise and fall times of the LM5110 with a 2 nF load?
The rise time is 14 ns and the fall time is 12 ns with a 2 nF load. - What is the supply voltage range for the LM5110?
The supply voltage range is from 3.5 V to 14 V. - What are the available package types for the LM5110?
The LM5110 is available in SOIC-8 and WSON-10 (4 mm × 4 mm) packages. - What is the UVLO threshold for the LM5110?
The UVLO threshold is between 2.7 V and 2.9 V. - How much current does the LM5110 consume in shutdown mode?
The LM5110 consumes less than 25 µA in shutdown mode. - Can the LM5110 be used in parallel to increase drive current?
Yes, the two channels can be connected in parallel to double the drive current. - What is the purpose of the dedicated input ground pin (IN_REF)?
The dedicated input ground pin allows for split supply or single supply operation. - What kind of protection does the LM5110 offer?
The LM5110 offers supply rail undervoltage lockout protection and a shutdown input for low power mode.
