Home Power management DC/DC switching regulators Step-down (buck) regulators Buck converters (integrated switch)
Home
Power management
DC/DC switching regulators
Step-down (buck) regulators
Buck converters (integrated switch)

LMR33620-Q1

ACTIVE

3.8-V to 36-V, 2-A synchronous step-down voltage converter

Order now
Data sheet
3.8-V to 36-V, 2-A synchronous step-down voltage converter

LMR33620-Q1

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 3.8 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 2 Iq (Typ) (uA) 24 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 2100 Features Enable, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1
Vin (Min) (V) 3.8 Vin (Max) (V) 36 Vout (Min) (V) 1 Vout (Max) (V) 34 Iout (Max) (A) 2 Iq (Typ) (uA) 24 Switching frequency (Min) (kHz) 400 Switching frequency (Max) (kHz) 2100 Features Enable, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, Wettable Flanks Package Operating temperature range (C) -40 to 125 Rating Automotive Regulated outputs (#) 1
open-in-new Find other Buck converters (integrated switch)
VQFN-HR (RNX) 12 6 mm² 3 x 2
open-in-new Find other Buck converters (integrated switch)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Output current: 2 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
    • Integrated compensation network
  • Low EMI and switching noise
    • Hotrod™ package
    • Parallel input current paths
  • High power conversation at all loads
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 25 µA
  • Create a custom design using the LMR33620-Q1 with the WEBENCH Power Designer
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Configured for rugged automotive applications
    • Input voltage range: 3.8 V to 36 V
    • Output voltage range: 1 V to 24 V
    • Output current: 2 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
    • Integrated compensation network
  • Low EMI and switching noise
    • Hotrod™ package
    • Parallel input current paths
  • High power conversation at all loads
    • Peak efficiency > 95%
    • Low shutdown quiescent current of 5 µA
    • Low operating quiescent current of 25 µA
  • Create a custom design using the LMR33620-Q1 with the WEBENCH Power Designer
open-in-new Find other Buck converters (integrated switch)

The LMR33620-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged applications. The LMR33620-Q1 drives up to 2 A of load current from an input of up to 36 V. The LMR33620-Q1 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 LMR33620-Q1 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 LMR33620-Q1 is available in a 12-pin 3 mm × 2 mm next generation VQFN package with wettable flanks.

The LMR33620-Q1 automotive-qualified regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged applications. The LMR33620-Q1 drives up to 2 A of load current from an input of up to 36 V. The LMR33620-Q1 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 LMR33620-Q1 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 LMR33620-Q1 is available in a 12-pin 3 mm × 2 mm next generation VQFN package with wettable flanks.

open-in-new Find other Buck converters (integrated switch)
Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet LMR33620-Q1 3.8-V to 36-V, 2-A Synchronous Step-Down Voltage Converter datasheet (Rev. C) 14 Oct 2020
Functional safety information LMR336x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. B) 02 Dec 2020
Application note PCB Thermal Design Tips for Automotive DC/DC Converters 12 Nov 2020
White paper Demystifying Input Supply Current in DC/DC Regulators:From Shutdown to Full Load 18 May 2020
Application note Working with Inverting Buck-Boost Converters (Rev. A) 14 May 2020
Technical article Optimizing flip-chip IC thermal performance in automotive designs 11 Dec 2019
Application note Understanding Mode Transitions for LMR33620/30 and LMR36006/15 04 Apr 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
User guide LMR33630xRNXEVM User's Guide 22 Feb 2018

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

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.
document-pdfAcrobat User guide
In stock
Limit: 5
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.
document-pdfAcrobat User guide
In stock
Limit: 5
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.
document-pdfAcrobat User guide
In stock
Limit: 5
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.
document-pdfAcrobat User guide
Out of stock on TI.com
alarm Notify me when available
Simulation model

LMR33620C Non-Inverting and inverting Unencrypted PSpice Transient Model (Rev. A)

SNVMBG9A.ZIP (130 KB) - PSpice Model
Download
Simulation model

LMR33620B Non-Inverting and inverting Unencrypted PSpice Transient Model (Rev. A)

SNVMBH4A.ZIP (124 KB) - PSpice Model
Download
Simulation model

LMR33620A Non-Inverting and inverting Unencrypted PSpice Transient Model (Rev. A)

SNVMBH7A.ZIP (125 KB) - PSpice Model
Download
Simulation model

LMR33620CQ3-Q1 Unencrypted Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVMBK7A.ZIP (177 KB) - PSpice Model
Download
Simulation model

LMR33620CQ5-Q1 Unencrypted Non-Inverting and Inverting PSpice Transient Model (Rev. A)

SNVMBK9A.ZIP (174 KB) - PSpice Model
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Calculation tool

Mode Transitions Calculator LMR336x0 LMR360xx

SNVC234.ZIP (442 KB)
Download
Calculation tool

LMR336x0 Component Calculator

SNVR484.ZIP (938 KB)
Download
Reference designs

TIDA-050015 — Automotive ADAS camera power supply reference design optimized for solution size and low noise

This wide-input power-supply reference design is specifically designed for space-constrained automotive ADAS camera applications. This size-optimized design uses front-end protection paired with a wide input voltage DC/DC converter to enable off-battery operation. The front-end filter and (...)
document-pdfAcrobat Schematic
Package Pins Download
VQFN-HR (RNX) 12 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos