Overview
The LMR36015BRNXR is a synchronous, step-down DC/DC converter produced by Texas Instruments. This regulator is designed to be easy to use and integrates high-side and low-side power MOSFETs, delivering up to 1.5 A of output current over a wide input voltage range of 4.2 V to 60 V, with transient tolerance up to 66 V. It is optimized for reliable and rugged applications, making it suitable for various industrial power supply needs. The LMR36015 uses peak-current-mode control for optimal efficiency and output voltage accuracy, and it features a small 2-mm × 3-mm HotRod™ package that minimizes external component requirements.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.2 V to 60 V |
| Transient Tolerance | Up to 66 V |
| Output Current | Up to 1.5 A |
| Operating Temperature Range | –40°C to +150°C |
| Junction Temperature Range | –40°C to +150°C |
| Package Type | VQFN-HR (RNX) with 12 pins |
| Package Size | 2-mm × 3-mm |
| Efficiency | 90% at 400 kHz (24 V IN, 5 V OUT, 1 A), 93% at 400 kHz (12 V IN, 5 V OUT, 1 A) |
| Quiescent Current | 26 µA |
| Switching Frequency | 400 kHz and 2.1 MHz options |
Key Features
- Functional Safety-Capable
- Designed for reliable and rugged applications
- Input transient protection up to 66 V
- 0.4-V dropout with 1.5-A load (typical)
- Suited for scalable industrial power supplies
- Low power dissipation across load spectrum
- Increased light load efficiency in PFM
- Low operating quiescent current of 26 µA
- Optimized for ultra low EMI requirements, meets CISPR25 class 5 standard
- HotRod™ package minimizes switch node ringing and parasitic inductance
- Spread spectrum reduces peak emissions
- Precision enable for flexible start-up and shutdown control
- Power-good flag with built-in filtering and delay
Applications
The LMR36015BRNXR is suitable for a variety of applications, including:
- Scalable industrial power supplies
- Rugged and reliable industrial systems
- Automotive systems requiring high surge immunity (meets IEC 61000-4-5)
- Low EMI requirements, such as in automotive and industrial environments
- Systems needing high efficiency and low quiescent current
Q & A
- What is the input voltage range of the LMR36015BRNXR?
The input voltage range is from 4.2 V to 60 V, with transient tolerance up to 66 V. - How much output current can the LMR36015BRNXR deliver?
The LMR36015BRNXR can deliver up to 1.5 A of output current. - What is the operating temperature range of the LMR36015BRNXR?
The operating temperature range is –40°C to +150°C. - What package type and size does the LMR36015BRNXR come in?
The LMR36015BRNXR comes in a VQFN-HR (RNX) package with 12 pins, measuring 2-mm × 3-mm. - What are the efficiency levels of the LMR36015BRNXR?
The efficiency levels are 90% at 400 kHz (24 V IN, 5 V OUT, 1 A) and 93% at 400 kHz (12 V IN, 5 V OUT, 1 A). - Does the LMR36015BRNXR have any special features for EMI reduction?
Yes, it is optimized for ultra low EMI requirements, meets CISPR25 class 5 standard, and features spread spectrum to reduce peak emissions. - What is the quiescent current of the LMR36015BRNXR?
The quiescent current is 26 µA. - Can the LMR36015BRNXR be used in automotive applications?
Yes, it meets the surge immunity requirements of IEC 61000-4-5, making it suitable for automotive systems. - How does the precision enable feature work on the LMR36015BRNXR?
The precision enable feature allows for flexible control over device start-up and shutdown, enabling a direct connection to the wide input voltage or precise control. - Does the LMR36015BRNXR have a power-good flag?
Yes, it has a power-good flag with built-in filtering and delay, providing a true indication of system status.
