All trademarks are the property of their respective owners.
Description
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.
Feature
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 TemperatureRange
15-μA Quiescent Current at no Load (Typical) with 3.3-VOutput
4 mm × 5 mm, 0.5-mm Pitch VQFN Package With Wettable Flanks and 0.6-mmVIN Spacing
Low EMI and SwitchNoise
Spread Spectrum Option
External FrequencySynchronization
RESET Output with Internal Filter and3-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°CTJ)
Available With Fixed 5-V, 3.3-V or AdjustableOutput
All trademarks are the property of their respective owners.
Description
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.
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
