Resources:
Datasheet
LM5007MMX/NOPB – 500mA, 75V High-Voltage Buck Switching Regulator IC
The LM5007MMX/NOPB is a high-performance 0.5A step-down switching regulator designed for efficiency, simplicity, and reliability in high-voltage power supply applications. Featuring an integrated 80V, 0.7A N-channel buck switch, the LM5007 supports an input voltage range from 9V to 75V, making it ideal for industrial, automotive, and distributed power systems. This device delivers cost-effective, compact, and efficient DC-DC conversion with minimal external components. Utilizing a hysteretic control scheme, the LM5007 provides constant operating frequency with minimal variation across load and input voltage changes. Its fast transient response eliminates the need for external loop compensation, simplifying design and reducing component count. The intelligent current limit with forced off-time inversely proportional to VOUT ensures effective short-circuit protection while minimizing current foldback, enabling stable operation under overload conditions. The LM5007 includes a comprehensive set of protection features such as thermal shutdown with automatic recovery, VCC and gate drive undervoltage lockout, and a maximum duty cycle limiter, ensuring robust performance and reliability. Offered in a compact 8-pin VSSOP and thermally enhanced 8-pin WSON package, the device delivers high efficiency and excellent thermal performance in space-constrained designs.
Key Features
- Wide Input Voltage Range: Operates from 9V to 75V for high-voltage power systems.
- Integrated 80V/0.7A Switch: Enables efficient conversion with minimal external components.
- 500mA Continuous Output Current: Ideal for low-to-medium power applications.
- Hysteretic Control Scheme: Ensures constant frequency operation and eliminates need for loop compensation.
- Fast Transient Response: Provides stable performance across varying loads and input conditions.
- Intelligent Current Limit: Forced off-time inversely proportional to VOUT for effective short-circuit protection.
- Built-in Protections: Includes thermal shutdown, undervoltage lockout, and maximum duty cycle limiter.
- Compact Packages: Available in VSSOP-8 and thermally enhanced WSON-8 for efficient PCB utilization.
- Simplified Design: Minimal external components and easy implementation reduce design complexity and cost.
