Overview
The LM5069MM-2/NOPB is a positive high-voltage hot swap and inrush current controller produced by Texas Instruments, formerly National Semiconductor. This device is designed to provide intelligent control of power supply connections during the insertion and removal of circuit cards from live system backplanes or other hot power sources. It ensures safe and reliable operation by limiting inrush current and controlling power dissipation in the external series pass MOSFET. The LM5069MM-2/NOPB is particularly useful in industrial systems, such as 24-V and 48-V systems, where hot swapping is a critical requirement.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | VSSOP-10 |
| Max Output Voltage | 101.25V |
| Max Supply Voltage | 80V |
| Min Supply Voltage | 9V |
| Nominal Input Voltage | 80V |
| Number of Channels | 1 |
| Number of Outputs | 1 |
| Number of Pins | 10 |
| Operating Supply Current | 1.3mA |
| Output Voltage | 12V |
| Max Operating Temperature | 125°C |
| Min Operating Temperature | -40°C |
| RoHS Compliant | Yes |
| Lead Free | Lead Free |
| Mount | Surface Mount |
| Termination | SMD/SMT |
Key Features
- In-rush current limit for safe board insertion into live power sources.
- Programmable maximum power dissipation in the external series pass MOSFET.
- Power Good (PGD) output indicator to signal when the output voltage is within 1.25 V of the input voltage.
- Programmable input undervoltage and overvoltage lockout levels and hysteresis.
- Programmable initial insertion delay time and fault detection time.
- Automatic restart at a fixed duty cycle for the LM5069-2 variant.
- Compact VSSOP-10 package.
Applications
The LM5069MM-2/NOPB is suitable for various industrial applications, including:
- 24-V and 48-V industrial systems.
- Hot swap applications in live system backplanes.
- Power supply systems requiring controlled inrush current and power dissipation.
- Circuit cards that need safe insertion and removal from live power sources.
Q & A
- What is the primary function of the LM5069MM-2/NOPB?
The primary function is to provide intelligent control of power supply connections during the insertion and removal of circuit cards from live system backplanes, ensuring safe and reliable operation. - What is the maximum output voltage of the LM5069MM-2/NOPB?
The maximum output voltage is 101.25V. - What is the operating temperature range of the LM5069MM-2/NOPB?
The operating temperature range is from -40°C to 125°C. - Is the LM5069MM-2/NOPB RoHS compliant?
Yes, the LM5069MM-2/NOPB is RoHS compliant. - What package type is the LM5069MM-2/NOPB available in?
The LM5069MM-2/NOPB is available in a VSSOP-10 package. - What is the purpose of the Power Good (PGD) output?
The Power Good (PGD) output indicates when the output voltage is within 1.25 V of the input voltage. - Can the LM5069MM-2/NOPB be used in 24-V and 48-V industrial systems?
Yes, it is suitable for both 24-V and 48-V industrial systems. - Does the LM5069MM-2/NOPB support automatic restart after a fault?
Yes, the LM5069-2 variant automatically restarts at a fixed duty cycle after a fault detection. - How is the inrush current limited in the LM5069MM-2/NOPB?
The inrush current is limited through programmable settings in the external series pass MOSFET. - What is the typical operating supply current of the LM5069MM-2/NOPB?
The typical operating supply current is 1.3mA.
