Overview
The LM25116MHX from Texas Instruments is a synchronous buck controller designed for step-down regulator applications. It is particularly suited for use with high voltage or widely varying input supplies. This controller is part of the LM25116 family and is packaged in a 20-Pin PowerTSSOP (0.173, 4.40mm Width) package. The LM25116MHX is known for its robust performance and versatility in power management systems.
Key Specifications
| Parameter | Value |
|---|---|
| Package / Case | 20-PowerTSSOP (0.173, 4.40mm Width) |
| Number of Pins | 20 |
| Operating Supply Voltage | 6V ~ 42V |
| Input Voltage (Min) | 6V |
| Input Voltage (Nom) | 24V |
| Output Voltage | Up to 36V |
| Output Type | Transistor Driver |
| Switching Frequency | 50kHz ~ 1MHz |
| Control Mode | Pulse Width Modulation (PWM) |
| Synchronous Rectifier | Yes |
| Max Frequency | 590kHz |
| Max Duty Cycle | 85% |
| Quiescent Current | 4.6mA |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Yes |
Key Features
- Synchronous Buck Controller: Designed for step-down regulator applications from high voltage or widely varying input supplies.
- Wide Input Voltage Range: Operates from 6V to 42V, making it versatile for various power management needs.
- Adjustable Switching Frequency: Can be set between 50kHz and 1MHz, allowing for flexibility in design.
- Pulse Width Modulation (PWM): Uses PWM for efficient control and regulation of the output voltage.
- Synchronous Rectification: Enhances efficiency by using actively controlled switches instead of diodes.
- Control Features: Includes enable, frequency control, ramp, and soft start capabilities for precise control over the power supply.
- Compact Package: 20-Pin PowerTSSOP package with dimensions of 0.173 x 4.40mm, suitable for space-constrained designs.
Applications
The LM25116MHX is suitable for a variety of applications requiring efficient and reliable step-down voltage regulation. These include:
- Power Supplies: For DC-DC converters in industrial, automotive, and consumer electronics.
- Embedded Systems: In microcontroller-based systems that require stable and efficient power supply.
- Telecommunications: For powering telecommunications equipment and network devices.
- Aerospace and Defense: Where high reliability and efficiency in power management are critical.
Q & A
- What is the primary function of the LM25116MHX?
The LM25116MHX is a synchronous buck controller designed for step-down regulator applications.
- What is the input voltage range of the LM25116MHX?
The input voltage range is from 6V to 42V.
- What is the switching frequency range of the LM25116MHX?
The switching frequency can be adjusted between 50kHz and 1MHz.
- Does the LM25116MHX support synchronous rectification?
Yes, it supports synchronous rectification to enhance efficiency.
- What is the maximum duty cycle of the LM25116MHX?
The maximum duty cycle is 85%.
- What is the quiescent current of the LM25116MHX?
The quiescent current is 4.6mA.
- Is the LM25116MHX RoHS compliant?
Yes, it is ROHS3 compliant and lead-free.
- What is the package type of the LM25116MHX?
The package type is 20-Pin PowerTSSOP (0.173, 4.40mm Width).
- What are some common applications of the LM25116MHX?
Common applications include power supplies, embedded systems, telecommunications, and aerospace and defense.
- What control features does the LM25116MHX offer?
The LM25116MHX offers enable, frequency control, ramp, and soft start capabilities.
