Calculation tool
LMR36500-DESIGN-CALC — LMR36500 Component Calculator
LMR36500 Component Calculator
Data sheet
LMR36500
- Functional Safety-Capable
- Designed for rugged industrial applications:
- Junction temperature range –40°C to +150°C
- Input transient capability up to 70 V
- Wide input voltage range: 3.0 V (falling threshold) to 65 V
- Minimized switch node ringing to reduce EMI
- Adjustable and fixed output 3.3-V and 5-V voltage options available
- Designed for scalable industrial power supplies:
- Minimized design size and cost:
- Ultra-small, 2-mm × 2-mm HotRod™ package
- High efficiency across load range with low power dissipation:
- Greater than 80% peak efficiency at 1 MHz (3.3-V V OUT)
The LMR36500 is the industry smallest 65-V, 50-mA synchronous step-down DC/DC converter in 4-mm 2 HotRod package. This easy-to-use converter can handle input voltage transients up to 70 V, provide excellent EMI performance and supports fixed, 3.3 V, 5 V and other adjustable output voltages.
The LMR36500 uses a peak current mode control architecture with internal compensation to maintain stable operation with minimal output capacitance. The LMR36500 with the right resistor selection from the RT pin to ground can be externally programmed to any desired switching frequency of operation over a wide range from 200 kHz to 2.2 MHz. The precision EN/UVLO feature allows precise control of the device during start-up and shutdown. The PGOOD flag, with built-in glitch filter and delayed release, offers a true indication of the system status, eliminating the requirement for an external voltage supervisor. The compact design size and rich feature set of LMR36500 simplifies implementation for a wide range of industrial applications.
Technical documentation
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View all 7 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMR365003-V to 65-V,50-mA Wide VINSynchronous Buck Converter Optimized for Size and Light Load Efficiency datasheet | PDF | HTML | 15 Nov 2023 |
| EVM User's guide | LMR36500 Evaluation Module User's Guide | PDF | HTML | 03 Nov 2023 | |
| Functional safety information | LMR36500 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 03 Nov 2023 | |
| Certificate | LMR36500EVM EU Declaration of Conformity (DoC) | 02 Oct 2023 | ||
| Application note | Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) | PDF | HTML | 26 Jul 2021 | |
| Application brief | Powering Drones With a Wide VIN DC-DC Converter (Rev. A) | 05 Feb 2019 | ||
| Analog Design Journal | Accurately measuring efficiency of ultralow-IQ devices | 22 Jan 2014 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LMR36500EVM — LMR36500 evaluation module for 65-V 50-mA synchronous step-down converter
The LMR36500EVM helps designers evaluate the operation and performance of the LMR36500 wide-input buck regulator. The LMR36500 is an easy-to-use synchronous step-down DC/DC converter capable of driving up to 50 mA of load current from an input voltage of up to 65 V. The LMR36500 has ultra-low (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN-HR (RPE) | 9 | Ultra Librarian |
Ordering & quality
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