Texas Instruments LM5007MM DC-DC Switching Buck Regulator, Adjustable, MSOP-8

The Texas Instruments LM5007MM is a step-down (buck) switching regulator designed to deliver an efficient, low-cost solution for power supply bias applications. This high-voltage component integrates an 80V, 0.7A N-channel buck switch and an internal high-voltage Vcc regulator, simplifying your circuit design and reducing external component count.

It employs an advanced hysteretic control scheme where the on-time is inversely proportional to the input voltage (VIN). This intelligent design ensures the operating frequency remains remarkably constant despite variations in load and input voltage, eliminating the need for complex control loop compensation. The result is ultra-fast transient response to sudden load changes, enhancing system stability.

Key Features & Protection

For robust operation, the LM5007MM includes comprehensive protection features. An intelligent current limit function with a forced off-time inversely proportional to VOUT minimises load current foldback. Additional safeguards include thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and a maximum duty cycle limiter, ensuring reliable performance under demanding conditions.

With an adjustable output voltage ranging from 2.5V to 73V and a wide input voltage range of 9V to 75V, it offers exceptional design flexibility. It delivers a continuous output current of 500mA with high operational efficiency, making it suitable for space-constrained, surface-mount applications.

Specifications at a Glance

• Topology: Buck (Step Down)
• Input Voltage: 9V to 75V
• Output Voltage: Adjustable, 2.5V to 73V
• Output Current: 500mA
• Switching Frequency: 380kHz (Typical)
• Integrated Switch: 80V, 0.7A N-channel
• Package: MSOP-8 (VSSOP)
• Mounting: Surface Mount
• Operating Temperature: -40°C to +125°C
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