Overview
The LM5069MM-2-TI, produced by Texas Instruments, is a positive high-voltage hot swap and inrush current controller. 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 board insertion by limiting inrush current, thereby preventing system voltage droop and transients. The LM5069MM-2-TI is available in a 10-pin VSSOP package and offers various programmable features such as current limit, power dissipation, undervoltage and overvoltage lockout, and fault detection timing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 9 V to 80 V | V |
| Package Type | VSSOP (DGS) | - |
| Number of Pins | 10 | - |
| Operating Temperature Range | -40°C to 125°C | °C |
| Power Good Output Threshold | Within 1.25 V of input voltage | V |
| Gate Output Voltage | 11.4 V to 12.6 V | V |
| Timer Pin Upper Threshold | 3.76 V to 4.16 V | V |
| Timer Pin Lower Threshold | 1.187 V to 1.313 V | V |
Key Features
- Wide operating range: 9 V to 80 V
- In-rush current limit for safe board insertion into live power sources
- Programmable maximum power dissipation in the external pass device
- Adjustable current limit
- Circuit breaker function for severe overcurrent events
- Internal high side charge pump and gate driver for external N-channel MOSFET
- Adjustable undervoltage lockout (UVLO) and hysteresis
- Adjustable overvoltage lockout (OVLO) and hysteresis
- Initial insertion timer allows ringing and transients to subside after system connection
- Programmable fault timer avoids nuisance trips
- Active high open drain POWER GOOD output
- Available in latched fault (LM5069-1) and automatic restart (LM5069-2) versions
Applications
The LM5069MM-2-TI is suitable for various applications, including:
- 24-V and 48-V industrial systems
- Hot swap and inrush current control in live system backplanes
- Power supply systems requiring safe and controlled board insertion and removal
- Systems needing programmable power management and fault detection
Q & A
- What is the primary function of the LM5069MM-2-TI?
The primary function is to provide intelligent control of power supply connections during insertion and removal of circuit cards from live system backplanes or other hot power sources.
- What is the operating voltage range of the LM5069MM-2-TI?
The operating voltage range is from 9 V to 80 V.
- What type of package does the LM5069MM-2-TI come in?
The device is available in a 10-pin VSSOP (DGS) package.
- What is the operating temperature range of the LM5069MM-2-TI?
The operating temperature range is from -40°C to 125°C.
- How does the POWER GOOD output function?
The POWER GOOD output indicates when the output voltage is within 1.25 V of the input voltage.
- Can the current limit and power dissipation be programmed?
Yes, the current limit and power dissipation in the external series pass N-channel MOSFET are programmable.
- What are the differences between LM5069-1 and LM5069-2?
The LM5069-1 latches off after a fault detection, while the LM5069-2 automatically restarts at a fixed duty cycle.
- Does the LM5069MM-2-TI have adjustable undervoltage and overvoltage lockout levels?
Yes, the undervoltage and overvoltage lockout levels and hysteresis are programmable.
- What is the purpose of the initial insertion timer?
The initial insertion timer allows ringing and transients to subside after system connection.
- Is the LM5069MM-2-TI RoHS compliant?
Yes, the LM5069MM-2-TI is RoHS compliant.
