Overview
The Texas Instruments LM5109ASD/NOPB is a high-voltage gate driver IC designed to drive both the high-side and low-side N-channel MOSFETs in synchronous buck or half-bridge configurations. This cost-effective device is optimized for high-speed operation while maintaining low power consumption. It features independent TTL and CMOS-compatible input thresholds, making it versatile for various control logic systems. The LM5109ASD/NOPB is available in a thermally enhanced WSON-8 package, suitable for applications requiring high thermal performance and compact design.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM5109ASD/NOPB |
| Package | WSON-8-EP (4x4) |
| Peak Output Current | 1 A (1.0 A Sink / 1.0 A Source) |
| Supply Voltage Range | 8 V to 14 V |
| Bootstrap Supply Voltage | Up to 108 V DC |
| Propagation Times | 30 ns Typical |
| Rise and Fall Times | 15 ns Typical |
| Operating Temperature Range | -40°C to 125°C |
| UVLO Threshold | Typically about 6.7 V |
Key Features
- Drives both high-side and low-side N-channel MOSFETs in synchronous buck or half-bridge configurations.
- 1 A peak output current (1.0 A sink and 1.0 A source).
- Independent TTL and CMOS-compatible input thresholds.
- Bootstrap supply voltage up to 108 V DC.
- Fast propagation times (30 ns typical) and excellent propagation delay matching (2 ns typical).
- Drives 1000 pF load with 15 ns rise and fall times.
- Under-voltage lockout (UVLO) on both low-side and high-side power rails.
- Low power consumption.
- Pin compatible with ISL6700.
- Available in thermally enhanced WSON-8 package.
Applications
- Synchronous buck converters.
- Half-bridge configurations.
- High-voltage power supplies.
- Motor control systems.
- E-bike and electric vehicle systems.
- Industrial power systems requiring high reliability and efficiency.
Q & A
- What is the peak output current of the LM5109ASD/NOPB?
The peak output current is 1 A (1.0 A sink and 1.0 A source).
- What is the supply voltage range for the LM5109ASD/NOPB?
The supply voltage range is from 8 V to 14 V.
- What is the maximum bootstrap supply voltage for the LM5109ASD/NOPB?
The maximum bootstrap supply voltage is up to 108 V DC.
- What are the typical propagation times for the LM5109ASD/NOPB?
The typical propagation times are 30 ns.
- Does the LM5109ASD/NOPB have under-voltage lockout (UVLO) protection?
- What is the operating temperature range for the LM5109ASD/NOPB?
The operating temperature range is from -40°C to 125°C.
- In what package is the LM5109ASD/NOPB available?
The device is available in a thermally enhanced WSON-8 package.
- Is the LM5109ASD/NOPB pin compatible with other devices?
- What are some common applications for the LM5109ASD/NOPB?
- Does the LM5109ASD/NOPB support TTL and CMOS-compatible input thresholds?
