Home Power management DC/DC switching regulators DC/DC converters
Home
Power management
DC/DC switching regulators
DC/DC converters

LM63635C-Q1

ACTIVE

Automotive 3.5V-to-36V 3.25A step-down voltage converter

Order now
Data sheet

LM63635C-Q1

ACTIVE
Data sheet Order now

Product details

Rating Automotive Topology Buck Iout (max) (A) 3.25 Vin (max) (V) 32 Vin (min) (V) 3.5 Vout (max) (V) 20 Vout (min) (V) 1 EMI features Spread Spectrum Features Enable, Fixed Output, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Power good, Spread Spectrum, Synchronous rectification, UVLO fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000024 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
Rating Automotive Topology Buck Iout (max) (A) 3.25 Vin (max) (V) 32 Vin (min) (V) 3.5 Vout (max) (V) 20 Vout (min) (V) 1 EMI features Spread Spectrum Features Enable, Fixed Output, Fixed soft start, Forced PWM, Frequency synchronization, Light-load efficiency, Power good, Spread Spectrum, Synchronous rectification, UVLO fixed Control mode current mode Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.000024 Duty cycle (max) (%) 99 TI functional safety category Functional Safety-Capable
WSON (DRR) 12 9 mm² 3 x 3
  • AEC-Q100-Qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements
    • Input voltage range: 3.5V to 36V
    • Short minimum on-time of 50ns
    • Good EMI performance
    • Psuedo-random spread spectrum
    • Compatible with CISPR 25
    • Low operating quiescent current of 23µA
    • Junction temperature range –40°C to +150°C
  • High design flexibility with minimal external components
    • Fixed VOUT at 3.3V or 5V
    • Fixed switching frequency at 400kHz or 2.1MHz
    • Output current up to 3.25A
  • Small design size
    • As small as: 14mm × 14mm for 3.25A, 2.2MHz with WSON package
    • Highly integrated design with low external component count
  • AEC-Q100-Qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • Supports automotive system requirements
    • Input voltage range: 3.5V to 36V
    • Short minimum on-time of 50ns
    • Good EMI performance
    • Psuedo-random spread spectrum
    • Compatible with CISPR 25
    • Low operating quiescent current of 23µA
    • Junction temperature range –40°C to +150°C
  • High design flexibility with minimal external components
    • Fixed VOUT at 3.3V or 5V
    • Fixed switching frequency at 400kHz or 2.1MHz
    • Output current up to 3.25A
  • Small design size
    • As small as: 14mm × 14mm for 3.25A, 2.2MHz with WSON package
    • Highly integrated design with low external component count

The LM63635C-Q1 regulator is an easy-to-use, synchronous, step-down, DC/DC converter designed for rugged automotive applications. The LM63635C-Q1 can drive up to 3.25A of load current from an input of up to 36V. The converter has high light load efficiency and output accuracy in a small design size. Features such as a RESET flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency while maintaining tight load regulation. Integration eliminates many 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 LM63635C-Q1 is available in a WSON 12-pin power package.

The LM63635C-Q1 regulator is an easy-to-use, synchronous, step-down, DC/DC converter designed for rugged automotive applications. The LM63635C-Q1 can drive up to 3.25A of load current from an input of up to 36V. The converter has high light load efficiency and output accuracy in a small design size. Features such as a RESET flag and precision enable provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load improves efficiency while maintaining tight load regulation. Integration eliminates many 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 LM63635C-Q1 is available in a WSON 12-pin power package.
filter Find other DC/DC converters
Download View video with transcript Video

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* Data sheet LM63635C-Q1 3.5V to 36V, 3.25A, Automotive Step-Down Voltage Converter datasheet (Rev. A) PDF | HTML 16 May 2025
Functional safety information LM63635C-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 18 Jan 2024

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM63635DNEVM — LM63635DN evaluation module for 3.5-V to 36-V, 3.25-A step-down voltage converter with spread spectr

LM63635DNEVM evaluation module (EVM) helps designers evaluate the operation and performance of the LM636x5CAQDRRQ1 buck regulator. The LM636x5CAQDRRQ1 is a family of easy-to-use synchronous step-down DC/DC converters capable of driving up to 3.5-A of load current from an input voltage of 3.5-V to (...)
User guide: PDF | HTML
Not available on TI.com
Package Pins CAD symbols, footprints & 3D models
WSON (DRR) 12 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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
Information included:
  • Fab location
  • Assembly location

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