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LMR51603YDBVR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LMR51603YDBVR product

LMR51603YDBVR

Voltage Regulators - DC DC Switching Regulators

65 V buck converter300 mA1.1 MHzPFMSOT-23-6adjustable output

LMR51603YDBVR is a compact 1.1 MHz PFM synchronous buck regulator for stepping 4 V to 65 V industrial rails down to an adjustable output at up to 300 mA.

Best for

  • Low-current industrial point-of-load rails
  • Smart-meter and appliance control rails
  • Wide-input 5 V, 3.3 V, or adjustable rails

Avoid if

  • A constant switching frequency is required at no load
  • The application requires more than 300 mA continuous output current
  • Input voltage can exceed the stated 70 V transient limit without external protection

Check before use

  • Choose the PFM variant only when variable light-load frequency is acceptable.
  • Keep the VIN-to-GND bypass loop, CB-to-SW capacitor, and feedback divider close to the IC.
  • Validate output transient response with the actual effective output capacitance.

Key specifications

Input voltage
4 V to 65 V
Output current
300 mA continuous
Switching frequency
1.1 MHz
Light-load mode
PFM
Package
SOT-23-6 (DBV)

Compliance & Environment

RoHS
Yes
REACH
-
MSL
Level-1-260C-UNLIM
ECCN
-
HTSUS
-

Application

Industrial control railsPower conversionSmart meters

Datasheet

07c5a038ab7680c9a10fbcbae5b1cfee_LMR51603YDBVR.pdf

800 KB

Datasheet AI

CAD Models

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3D Model
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Alternative components

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Design and risk insights

Questions & answers

LMR51603YDBVR is a Texas Instruments synchronous step-down DC/DC converter in a 6-pin SOT-23 package. It accepts 4 V to 65 V input, provides an adjustable 0.8 V to 28 V output, and supports up to 300 mA continuous load current.