The LMR14020-Q1 is a 40V, 2A step-down regulator with an integrated high-side MOSFET. With a wide input range from 4V to 40V, the device is designed for various applications from industrial to automotive for power conditioning from unregulated sources. An extended family is available in 3.5A and 5A options in pin-to-pin compatible packages, including LMR14030-Q1 and LMR14050-Q1. The regulator quiescent current is 40µA in sleep mode, which is designed for battery powered systems. An ultra-low 1µA current in shutdown mode can further prolong battery life. A wide adjustable switching frequency range allows either efficiency or external component size to be optimized. Internal loop compensation means that the user is free from the tedious task of loop compensation design. This internal loop compensation also minimizes the external components of the device. A precision enable input allows simplification of regulator control and system power sequencing. The device also has built-in protection features such as cycle-by-cycle current limit, thermal sensing and shutdown due to excessive power dissipation, and output overvoltage protection.
The LMR14020-Q1 is available in an 8-pin, HSOIC or 10-pin, WSON package with exposed pad for low thermal resistance.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMR14020-Q1 SIMPLE SWITCHER® Power Converter, 40V, 2A, Automotive, Step-Down Converter With 40µA IQ datasheet (Rev. B) | PDF | HTML | 20 Dec 2024 |
| Application note | Design Consideration on Boot Resistor in Buck Converter | PDF | HTML | 15 May 2023 | |
| Application note | Reduce Conducted EMI in Automotive Buck Converter Applications | 31 Jul 2019 | ||
| Application note | How to Evaluate Junction Temperature Properly with Thermal Metrics (Rev. B) | 29 Mar 2019 | ||
| Application note | How SYNC Logic Affects EMI Performance for Dual-Channel Buck Converters | 27 Apr 2018 | ||
| Application note | Low Conducted EMI Power Solution for Automotive Digital Cockpit With LMR14050 an | 07 Feb 2018 | ||
| Application note | Design Feedforward Capacitor for LMR14020 | 20 Dec 2017 | ||
| Application note | How to Evaluate the Maximum Inductor in Internal Compensation PCM Buck Converter | 20 Sep 2017 | ||
| EVM User's guide | LMR14020QDPR EVM User Guide | 08 Feb 2016 |
For additional terms or required resources, click any title below to view the detail page where available.
The LMR14020SEVM is a fully assembled and tested circuit for evaluating the LMR14020S Step-Down Converter. The LMR14020SEVM operates from 7V to 30V input (12V nominal) and provides a 5.0V or 3.3V output at 2A. The board also has jumper connectors to enable or disable the converter operation, change (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| WSON (DPR) | 10 | Ultra Librarian |
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