Calculation tool
LMR33630
SIMPLE SWITCHER® 3.8V to 36V, 3A Synchronous Buck Converter With Ultra-Low EMI
Data sheet
LMR33630
- Functional Safety-Capable
- 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 3 A 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 16 Design & development
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Evaluation board
LMR33630ADDAEVM — LMR33630 Synchronous Step-Down Converter Evaluation Module
The LMR33630ADDAEVM 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
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
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
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
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
SNVR484 — LMR336x0 Component Calculator
Supported products & hardware
Products
AC/DC & DC/DC converters (integrated FET)
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| VQFN-HR (RNX) | 12 | Ultra Librarian |
Ordering & quality
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