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LM5176RHFR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM5176RHFR product

LM5176RHFR

DC DC Switching Controllers

4-switch buck-boost55 V inputsynchronous controllerVQFN-28current-mode control

LM5176RHFR is a 55 V, four-switch synchronous buck-boost controller for wide-input power stages that must regulate when VIN is below, above, or close to VOUT.

Best for

  • Wide-input industrial DC/DC converters
  • Systems requiring seamless buck and boost regulation
  • Fixed-frequency CCM power stages

Avoid if

  • A fully integrated power stage is required
  • The design cannot accommodate four external MOSFETs and external compensation

Check before use

  • Confirm switching-node and MOSFET voltage margin for transients
  • Size the inductor and current-sense resistor for worst-case boost current
  • Follow Kelvin sensing and power-loop layout guidance

Key specifications

Input voltage
4.2 V to 55 V
Output sensing range
0.8 V to 55 V
Switching frequency
100 kHz to 600 kHz
Package
28-pin VQFN (RHF)

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
MSL 1, 260 °C unlimited
ECCN
-
HTSUS
-

Application

Industrial power suppliesBattery-powered equipmentUSB power delivery

Datasheet

a10e2daf35d2db769b2b88089b6b1619.pdf

800 KB

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CAD Models

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Where to Buy

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Alternative components

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Design and risk insights

Questions & answers

LM5176RHFR is a Texas Instruments 28-pin VQFN synchronous four-switch buck-boost controller. It drives external N-channel MOSFETs and regulates a DC/DC output across buck, boost, and transition operation.