LM25145
Description
The LM25145 42-V synchronous buck controller is designed to regulate from a high input voltage source or from an input rail subject to high voltage transients, minimizing the need for external surge suppression ponents.
Key Features
- 1 Versatile Synchronous Buck DC-DC Controller - Wide Input Voltage Range of 6 V to 42 V - Adjustable Output Voltage From 0.8 V to 40 V
- Meets EN55022 / CISPR 22 EMI Standards
- Lossless RDS(on) or Shunt Current Sensing
- Switching Frequency From 100 kHz to 1 MHz
- SYNC In and SYNC Out Capability
- 40-ns Minimum On-Time for High VIN / VOUT Ratio
- 140-ns Minimum Off-Time for Low Dropout
- 0.8-V Reference With ±1% Feedback Accuracy
- 7.5-V Gate Drivers for Standard VTH MOSFETs
- 14-ns Adaptive Dead-Time Control - 2.3-A Source and 3.5-A Sink Capability - Low-Side Soft-Start for Prebiased Start-Up
Applications
- Factory Automation
