Overview
The Texas Instruments LM5050MK-1/NOPB is a high-side OR-ing FET controller designed to operate in conjunction with an external N-Channel MOSFET. This device is used to replace diode rectifiers in power distribution networks, thereby reducing power loss and voltage drops. It is particularly useful in applications requiring redundant power supplies, such as in telecommunications, data centers, and other high-reliability systems. The LM5050MK-1/NOPB supports a wide operating input voltage range from 1 V to 75 V and can withstand transients up to 100 V, making it versatile for various power supply configurations.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LM5050MK-1/NOPB |
| Package | TSOT-23-6 |
| Operating Input Voltage Range | 1 V to 75 V (VBIAS required for VIN < 5 V) |
| Transient Capability | Up to 100 V |
| Gate Turnoff Current | 2-A Peak |
| Response Time to Current Reversal | 50 ns |
| Operating Temperature Range | -40°C to +125°C |
| Supply Current | Typically 130 μA at VIN = 12 V |
| Output Voltage Range | 5 V to 75 V |
Key Features
- Wide Operating Input Voltage Range: Supports input voltages from 1 V to 75 V, with a bias voltage required for inputs below 5 V.
- High-Side OR-ing FET Controller: Allows MOSFETs to replace diode rectifiers, reducing power loss and voltage drops in power distribution networks.
- Charge Pump Gate Driver: Provides a charge pump current source to drive the gate of an external N-Channel MOSFET.
- Fast Response to Current Reversal: Turns off the FET within 50 ns when current flows in the reverse direction.
- Minimum VDS Clamp for Faster Turnoff: Regulates the MOSFET gate-to-source voltage to minimize turnoff time.
- Compact Package: Available in a TSOT-23-6 package, making it suitable for space-constrained designs).
Applications
- Redundant Power Supplies: Ideal for active OR-ing of redundant (N+1) power supplies, ensuring high reliability in systems such as telecommunications and data centers).
- Power Distribution Networks: Used to replace diode rectifiers, reducing power loss and voltage drops in power distribution networks).
- High-Reliability Systems: Suitable for applications requiring high reliability and minimal power loss, such as in industrial, medical, and aerospace systems).
Q & A
- What is the primary function of the LM5050MK-1/NOPB?
The LM5050MK-1/NOPB is a high-side OR-ing FET controller designed to operate with an external N-Channel MOSFET, replacing diode rectifiers in power distribution networks to reduce power loss and voltage drops).
- What is the operating input voltage range of the LM5050MK-1/NOPB?
The device operates over an input voltage range from 1 V to 75 V, with a bias voltage required for inputs below 5 V).
- What is the transient capability of the LM5050MK-1/NOPB?
The device can withstand transients up to 100 V).
- How quickly does the LM5050MK-1/NOPB respond to current reversal?
The device turns off the FET within 50 ns when current flows in the reverse direction).
- What is the package type of the LM5050MK-1/NOPB?
The device is available in a TSOT-23-6 package).
- What are the typical applications of the LM5050MK-1/NOPB?
It is used in redundant power supplies, power distribution networks, and high-reliability systems such as telecommunications, data centers, and industrial applications).
- How does the LM5050MK-1/NOPB regulate the MOSFET gate-to-source voltage?
The device regulates the MOSFET gate-to-source voltage to minimize turnoff time and ensure efficient operation).
- What is the operating temperature range of the LM5050MK-1/NOPB?
The device operates over a temperature range from -40°C to +125°C).
- Is the LM5050MK-1/NOPB RoHS compliant?
The RoHS compliance status of this part is not explicitly stated, but it is recommended to check with the distributor for the most current information).
- Where can I find additional documentation and support for the LM5050MK-1/NOPB?
Additional documentation, including datasheets and application notes, can be found on the Texas Instruments website and through authorized distributors).
