LM5109B Overview
The LM5109B device is a cost-effective, high-voltage gate driver designed to drive both the high-side and the low-side N-channel MOSFETs in a synchronous buck or a half-bridge configuration. The floating high-side driver is capable of working with rail voltages up to 90 V. The outputs are independently controlled with cost-effective TTL and CMOS-patible input thresholds.
LM5109B Key Features
- 1 Drives Both a High-Side and Low-Side N-Channel MOSFET
- 1-A Peak Output Current (1.0-A Sink and 1.0-A Source)
- Inputs patible With Independent TTL and CMOS
- Bootstrap Supply Voltage to 108-V DC
- Fast Propagation Times (30 ns Typical)
- Drives 1000-pF Load With 15-ns Rise and Fall
- Excellent Propagation Delay Matching (2 ns
- Supply Rail Undervoltage Lockout
- Low Power Consumption
- 8-Pin SOIC and Thermally-Enhanced 8-Pin
