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Power management
SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI
Data sheet
- document-pdfAcrobat LMR33630SIMPLE SWITCHER® 3.8-V to 36-V, 3-A Synchronous Step-down Voltage Converter datasheet (Rev. F) PDF | HTML
LMR33630
Product details
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Configured for rugged industrial applications
- Input voltage range: 3.8 V to 36 V
- Output voltage range: 1 V to 24 V
- Output current: 3 A
- 75-mΩ/50-mΩ RDS-ON power MOSFETs
- Peak-current-mode control
- Short minimum on-time of 68 ns
- Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
- Junction temperature range –40°C to +125°C
- Low EMI and low switching noise
- Integrated compensation network
- Low EMI and switching noise
- HotRod™ package
- Parallel input current paths
- High power conversion at all loads
- Peak efficiency > 95%
- Low operating quiescent current of 25 µA
- Flexible system interface
- Power-good flag and precision enable
- Use TPSM53603 module for faster time to market
- Create a custom design using the LMR33630 with the WEBENCH Power Designer
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- Configured for rugged industrial applications
- Input voltage range: 3.8 V to 36 V
- Output voltage range: 1 V to 24 V
- Output current: 3 A
- 75-mΩ/50-mΩ RDS-ON power MOSFETs
- Peak-current-mode control
- Short minimum on-time of 68 ns
- Frequency: 400 kHz, 1.4 MHz, 2.1 MHz
- Junction temperature range –40°C to +125°C
- Low EMI and low switching noise
- Integrated compensation network
- Low EMI and switching noise
- HotRod™ package
- Parallel input current paths
- High power conversion at all loads
- Peak efficiency > 95%
- Low operating quiescent current of 25 µA
- Flexible system interface
- Power-good flag and precision enable
- Use TPSM53603 module for faster time to market
- Create a custom design using the LMR33630 with the WEBENCH Power Designer
The LMR33630 SIMPLE SWITCHER regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33630 drives up to 3A of load current from an input of up to 36 V. The LMR33630 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33630 automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33630 is available in an 8-pin HSOIC package and in a 12-pin 3 mm × 2 mm next generation VQFN package with wettable flanks. This device is also available in an AEC-Q100-qualified version.
The LMR33630 SIMPLE SWITCHER regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LMR33630 drives up to 3A of load current from an input of up to 36 V. The LMR33630 provides high light load efficiency and output accuracy in a very small solution size. Features such as a power-good flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. The LMR33630 automatically folds back frequency at light load to improve efficiency. Integration eliminates most external components and provides a pinout designed for simple PCB layout. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection. The LMR33630 is available in an 8-pin HSOIC package and in a 12-pin 3 mm × 2 mm next generation VQFN package with wettable flanks. This device is also available in an AEC-Q100-qualified version.
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Technical documentation
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View all 16Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | LMR33630SIMPLE SWITCHER® 3.8-V to 36-V, 3-A Synchronous Step-down Voltage Converter datasheet (Rev. F) | PDF | HTML | 24 Nov 2020 |
Functional safety information | LMR336x0 Functional Safety, FIT Rate, FMD and Pin FMA (Rev. B) | PDF | HTML | 20 Mar 2024 | |
Application note | Working with Inverting Buck-Boost Converters (Rev. B) | PDF | HTML | 18 Oct 2022 | |
Application note | Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) | PDF | HTML | 26 Jul 2021 | |
Application note | Designing a Motorized Resistive Load | PDF | HTML | 21 Jul 2021 | |
Selection guide | Buck Converter Quick Reference Guide (Rev. B) | 08 Apr 2021 | ||
Technical article | 3 tips when designing a power stage for servo and AC drives | PDF | HTML | 20 Nov 2019 | |
Application note | Achieving CISPR-22 EMI Standards With HotRod™ Buck Designs (Rev. A) | 17 Sep 2019 | ||
Technical article | Design a pre-tracking regulator, part 2: for a negative LDO | PDF | HTML | 26 Apr 2019 | |
Application note | Understanding Mode Transitions for LMR33620/30 and LMR36006/15 | 04 Apr 2019 | ||
Technical article | Designing a pre-tracking regulator, part 1: for a positive-output LDO | PDF | HTML | 18 Feb 2019 | |
Technical article | How a DC/DC converter package and pinout design can enhance automotive EMI perform | PDF | HTML | 04 Sep 2018 | |
Technical article | A review of EMI standards, part 2 – radiated emissions | PDF | HTML | 05 Jul 2018 | |
EVM User's guide | LMR33630EVM User's Guide (Rev. A) | 01 Mar 2018 | ||
EVM User's guide | LMR33630xRNXEVM User's Guide | 22 Feb 2018 | ||
Technical article | How to increase system reliability and simplify design using DC/DC converters | PDF | HTML | 13 Jun 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LMR33630ADDAEVM — LMR33630 Synchronous Step-Down Converter Evaluation Module
TheLMR33630ADDAEVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR33630 synchronous step-down converter. The LMR33630 provides exceptional efficiency and accuracy in a very small solution size.
User guide: PDF
Not available on TI.com
Evaluation board
LMR33630ARNXEVM — LMR33630 Synchronous Step Down Converter Evaluation Module
The LMR33630 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR33630A 400kHz synchronous step-down converter. The LMR33630 provides exceptional efficiency and accuracy in a very small solution size.
User guide: PDF
Not available on TI.com
Evaluation board
LMR33630CDDAEVM — LMR33630 Synchronous Step-Down Converter Evaluation Module
The LMR33630 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR33630 synchronous step-down converter. The LMR33630 provides exceptional efficiency and accuracy in a very small solution size.
User guide: PDF
Not available on TI.com
Evaluation board
LMR33630CRNXEVM — LMR33630 Synchronous Step Down Converter Evaluation Module
The LMR33630 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the LMR33630C 2.1MHz synchronous step-down converter. The LMR33630 provides exceptional efficiency and accuracy in a very small solution size.
User guide: PDF
Not available on TI.com
Simulation model
LMR33630A Non-Inverting and inverting PSpice Transient Model (Rev. A)
SNVMBF6A.ZIP (159 KB) - PSpice Model
Simulation model
LMR33630A Non-Inverting and inverting Unencrypted PSpice Transient Model (Rev. A)
SNVMBF9A.ZIP (7 KB) - PSpice Model
Simulation model
LMR33630B Inverting and Non-Inverting PSpice Transient Model
SNVMBH2.ZIP (127 KB) - PSpice Model
Simulation model
LMR33630B Unencrypted PSpice Inverting and Non-Inverting Transient Model
SNVMBH1.ZIP (7 KB) - PSpice Model
Simulation model
LMR33630C Unencrypted PSpice Inverting and Non-Inverting Transient Model (Rev. A)
SNVMBG5A.ZIP (128 KB) - PSpice Model
Calculation tool
SNVC234 — Mode Transitions Calculator LMR336x0 LMR360xx
Supported products & hardware
Products
AC/DC & DC/DC converters (integrated FET)
Calculation tool
SNVR484 — LMR336x0 Component Calculator
Supported products & hardware
Products
AC/DC & DC/DC converters (integrated FET)
Reference designs
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This reference design provides acompact system design capable of supporting motoracceleration and deceleration up to ±200 kRPM/s,which is a key requirement in many respiratorapplications. The design supports a number of offboardC2000 controllers including (...)
Design guide: PDF
Schematic: PDF
Reference designs
TIDA-010055 — Non-isolated power architecture with diagnostics reference design for protection relay modules
This reference design showcases non-isolated power supply architectures for protection relays with analog input/output and communication modules generated from 5-, 12-, or 24-V DC input. To generate the power supplies the design uses DC/DC converters with an integrated FET, a power module with an (...)
Design guide: PDF
Schematic: PDF
Reference designs
TIDA-010009 — Compact, efficient, 24-V input auxiliary power supply reference design for servo drives
This reference design showcases a method to generate power supplies required in a servo or AC drive including the analog and digtal I/O interfaces, encoder supply, isolated transceivers and digital processing block. This design also implements protection against input reverse polarity, output (...)
Design guide: PDF
Schematic: PDF
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
HSOIC (DDA) | 8 | Ultra Librarian |
VQFN-HR (RNX) | 12 | Ultra Librarian |
TI's Standard Terms and Conditions for Evaluation Items apply.
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Support & training
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Video series
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