Calculation tool
LMR51610-DESIGN-CALC — LMR51610-DESIGN-CALC
LMR51610-DESIGN-CALC
LMR51610
SIMPLE SWITCHER® power converter with 4.5V-to-65V 1A synchronous buck and 25µA quiescent current
Data sheet
LMR51610
- Functional Safety-Capable
- Configured for rugged industrial applications
- 4-V to 65-V input voltage range
- Input transient protection up to 70-V
- 0.6-A/1-A continuous output current
- 80-ns minimum switching on time
- Fixed 400-kHz and 1.1-MHz switching frequency
- –40°C to 150°C junction temperature range
- 98% maximum duty cycle
- Monotonic start-up with pre-biased output
- Short-circuit protection with hiccup mode
- Precision enable
- ±1.5% tolerance voltage reference
- Small design size and ease of use
- Integrated synchronous rectification
- Internal compensation for ease of use
- SOT-23 package
- Various options in pin-to-pin compatible package
- PFM and forced PWM (FPWM) options
- Pin-to-pin compatible with the LMR16006, LV2862, LMR50410, TPS560430, LMR54406, and LMR54410
- Create a custom design using the LMR516xx with the WEBENCH® Power Designer
The LMR516xx is a wide-V IN, easy-to-use synchronous buck converter capable of driving up to 0.6-A and 1-A load current. With a wide input range of 4 V to 65 V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source.
The LMR516xx operates at 400-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR516xx has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components.
The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.
Technical documentation
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View all 6 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LMR516xxSIMPLE SWITCHERPower Converter, 4-V to 65-V, 0.6-A/1-A Buck Converter in a SOT-23 Package datasheet (Rev. B) | PDF | HTML | 06 Dec 2023 |
| White paper | Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) | PDF | HTML | 30 Apr 2024 | |
| Application note | SOT236 IBB Application Design with LMR51610 | PDF | HTML | 05 Dec 2023 | |
| Functional safety information | LMR516xx Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 25 Aug 2023 | |
| EVM User's guide | LMR51610EVM User's Guide | PDF | HTML | 06 Jun 2023 | |
| Certificate | LMR51610EVM EU Declaration of Conformity (DoC) | 23 May 2023 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LMR51610EVM — LMR51610 evaluation module
The LMR51610 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR51610 step-down converter. The EVM is 3.3V output, with a wide input range of up to 65V, 1A load current, with internal fixed frequency, and is able to accept AC signal injection for loop (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23 (DBV) | 6 | Ultra Librarian |
Ordering & quality
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