Overview
The LM22673MRE-ADJ/NOPB is a high-efficiency step-down (buck) voltage regulator from Texas Instruments, part of their SIMPLE SWITCHER® family. This regulator is designed to provide a simple and efficient solution for voltage regulation, requiring a minimum number of external components. It features a wide input voltage range of 4.5 V to 42 V and can deliver up to 3 A of load current. The device is available in various packages, including the 8-PowerSOIC package, and is suitable for a variety of applications due to its high efficiency and stability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 4.5 | 42 | V | |
| Output Current | 3 | A | ||
| Switching Frequency | 500 | kHz | ||
| Output Voltage Options | 1.285 (ADJ) | 5.0 (Fixed) | V | |
| Feedback Reference Accuracy | ±1.5% | |||
| N-Channel MOSFET Resistance | 100 mΩ (SO PowerPAD) | 120 mΩ (PFM Package) | Ω | |
| Operating Junction Temperature Range | –40 | 125 | °C | |
| Quiescent Current | 0.8 | mA |
Key Features
- Internally compensated voltage mode control, eliminating the need for external loop compensation components.
- Stable operation with low ESR ceramic capacitors.
- Adjustable soft-start feature through a single external capacitor.
- Adjustable current limit programmable with a single external resistor.
- Integrated boot-strap diode and thermal shutdown protection.
- High efficiency (> 90%) and excellent line and load regulation.
- Switching frequency of 500 kHz, allowing for small external components and good transient response.
- Support for TI's WEBENCH® design tool for easy design and simulation.
Applications
- Industrial control systems.
- Telecom and datacom systems.
- Embedded systems.
- Conversions from standard 24 V, 12 V, and 5 V input rails.
Q & A
- What is the input voltage range of the LM22673MRE-ADJ/NOPB? The input voltage range is from 4.5 V to 42 V.
- What is the maximum output current of the LM22673MRE-ADJ/NOPB? The maximum output current is up to 3 A.
- What are the output voltage options for the LM22673MRE-ADJ/NOPB? The output voltage options include adjustable (as low as 1.285 V) and fixed (5 V).
- What is the switching frequency of the LM22673MRE-ADJ/NOPB? The switching frequency is 500 kHz.
- Does the LM22673MRE-ADJ/NOPB have built-in thermal protection? Yes, it has built-in thermal shutdown protection.
- How can the soft-start feature be adjusted? The soft-start feature can be adjusted through the selection of a single external capacitor.
- Can the current limit be programmed? Yes, the current limit can be programmed with a single external resistor.
- What type of MOSFET is used in the LM22673MRE-ADJ/NOPB? It uses an N-channel MOSFET.
- What is the operating junction temperature range of the LM22673MRE-ADJ/NOPB? The operating junction temperature range is from –40°C to 125°C.
- Is the LM22673MRE-ADJ/NOPB compatible with TI's WEBENCH® design tool? Yes, it is fully compatible with TI's WEBENCH® design tool.
