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2.5/3.5A, 36 V Synchronous, 2.1MHz, Automotive Step Down DC-DC Converter

Inventory: 3,144
Custom reel may be available

Download data sheet for LM53635-Q1
  |   View additional information for LM53635-Q1

Packaging information

Package | Pins VQFN-HR (RNL) | 22
Operating temperature range (℃) S (-40 to 150)
Package qty | Carrier: 250 | SMALL T&R
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Quality information

RoHS Yes
Lead finish / Ball material SN
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • AEC-Q100 Automotive Qualified:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureRange
    • Device HBM Classification Level 2
    • Device CDM ClassificationLevel C6
  • –40°C to +150°C Junction Temperature Range
  • 15-µA Quiescent Current at no Load (Typical) with 3.3-V Output
  • 4 mm × 5 mm, 0.5-mm Pitch VQFN Package With Wettable Flanks and 0.6-mm VIN Spacing
  • Low EMI and Switch Noise
  • Spread Spectrum Option
  • External Frequency Synchronization
  • RESET Output with Internal Filter and 3-ms Release Timer
  • Pin-Selectable Forced PWM Mode
  • Built-In Compensation, Soft Start, Current Limit, Thermal Shutdown, and UVLO
  • 0.6-V Dropout at 3.5 A at 105°C TA
  • ±1% Output Voltage Tolerance (–40°C to 125°C TJ)
  • Available With Fixed 5-V, 3.3-V or Adjustable Output

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The LM53625-Q1/LM53635-Q1 synchronous buck regulator is optimized for automotiveapplications, providing an output voltage of 5 V, 3.3 V, or an adjustable output. Advancedhigh-speed circuitry allows the LM53625-Q1/LM53635-Q1 to regulate from an input of 18 V to anoutput of 3.3 V at a fixed frequency of 2.1 MHz. Innovative architecture allows this device toregulate a 3.3-V output from an input voltage of only 3.55 V. All aspects of theLM53625-Q1/LM53635-Q1 are optimized for automotive and performance-driven industrial customers. Aninput voltage range up to 36 V, with transient tolerance up to 42 V, eases input surge protectiondesign. The automotive-qualified Hotrod QFN package with wettable flanks reduces parasiticinductance and resistance while increasing efficiency, minimizing switch node ringing, anddramatically lowering electromagnetic interference (EMI). An open-drain reset output, with built-infiltering and delay, provides a true indication of system status. This feature negates therequirement for an additional supervisory component, saving cost and board space. Seamlesstransition between PWM and PFM modes and low quiescent current (only 15 µA for the 3.3 V option)ensure high efficiency and superior transient responses at all loads.

Qty Price
1-99 $4.19
100-249 $3.42
250-999 $2.69
1,000+ $2.28