Overview
The LM5050MKX-2/NOPB is a High Side OR-ing FET Controller produced by Texas Instruments. This device operates in conjunction with an external N-Channel MOSFET to function as an ideal diode rectifier when connected in series with a power source. It is designed to replace diode rectifiers in power distribution networks, thereby reducing power loss and voltage drops. The LM5050MKX-2/NOPB supports a wide operating input voltage range from +6V to +75V and can withstand transients up to +100V, making it suitable for high-reliability applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage Range | +6 | - | +75 | V |
| Transient Capability | - | - | +100 | V |
| Gate Turn-off Current | - | - | 2 | A |
| Response Time to Current Reversal | - | 50 | - | ns |
| Junction Temperature Range | -40 | - | +125 | °C |
| Package Type | - | - | SOT-6 (Thin SOT23-6) | - |
| ESD HBM | - | - | 2 kV | - |
| Peak Reflow Temperature | - | - | 260°C, 30sec | - |
Key Features
- Wide Operating Input Voltage Range: +6V to +75V
- +100 Volt Transient Capability
- Charge Pump Gate Driver for External N-Channel MOSFETs
- Fast 50ns Response to Current Reversal
- 2A Peak Gate Turn-off Current
- Minimum VDS Clamp for Faster Turn-off
- MOSFET Diagnostic Test Mode
- Logic Level Input for OFF Pin and Open Drain Output for nFGD Pin
Applications
The LM5050MKX-2/NOPB is typically used in systems that require high availability, such as:
- Active OR-ing of Redundant (N+1) Power Supplies
- Power Distribution Networks where diode rectifiers need to be replaced to reduce power loss and voltage drops
- High-reliability applications requiring fast response to current reversals and transient protection
Q & A
- What is the operating input voltage range of the LM5050MKX-2/NOPB?
The operating input voltage range is from +6V to +75V.
- What is the transient capability of the LM5050MKX-2/NOPB?
The device can withstand transients up to +100V.
- How quickly does the LM5050MKX-2/NOPB respond to current reversals?
The device responds to current reversals within 50ns.
- What is the peak gate turn-off current of the LM5050MKX-2/NOPB?
The peak gate turn-off current is 2A.
- What package type is the LM5050MKX-2/NOPB available in?
The device is available in the SOT-6 (Thin SOT23-6) package.
- What is the junction temperature range of the LM5050MKX-2/NOPB?
The junction temperature range is from -40°C to +125°C.
- Does the LM5050MKX-2/NOPB have a MOSFET diagnostic test mode?
Yes, the device includes a MOSFET diagnostic test mode.
- How does the LM5050MKX-2/NOPB handle shorted MOSFETs?
The device can detect shorted MOSFETs through its FET test comparator and indicate this via the nFGD pin.
- What is the ESD HBM rating of the LM5050MKX-2/NOPB?
The ESD HBM rating is 2 kV.
- What is the peak reflow temperature for the LM5050MKX-2/NOPB?
The peak reflow temperature is 260°C for 30 seconds.
