Texas Instruments LM5145RGYR Microcontrollers
75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges 20-VQFN -40 to 125
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LM5145RGYR
Detailed Description
75V Synchronous Buck Controller With Wide Input Voltage and Duty Cycle Ranges 20-VQFN -40 to 125
Package
20-VFQFN Exposed Pad
Lifecycle Status
Active
Datasheet
LM5145RGYR Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LM5145RGYR Microcontrollers technical specifications.
General
RoHS
Yes
Package / Case
20-VFQFN Exposed Pad
Mounting Type
Surface Mount, Wettable Flank
Operating Temperature
-40°C ~ 125°C (TJ)
Supply Voltage
6V ~ 75V
Lifecycle Status
Active
Output Type
Transistor Driver
Switching Frequency
100kHz ~ 1MHz
Number of Outputs
1
Topology
Buck
Alternate Parts Comparison (LM5145RGYR vs LM5123QRGRRQ1 vs BQ24123RHLRG4 vs DPA02257RGBR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad | 20-VFQFN Exposed Pad |
| Mounting Type | Surface Mount, Wettable Flank | Surface Mount | SMD/SMT | SMD/SMT |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 85°C (TA) | -40°C ~ 85°C |
| Supply Voltage | 6V ~ 75V | 3.8V ~ 42V | 4.3 V ~ 16 V | 1 V |
| Switching Frequency | 100kHz ~ 1MHz | 100kHz ~ 2.2MHz | -- | 1 MHz |
| RoHS | Yes | -- | Yes | Yes |
| Lifecycle Status | Active | Active | -- | Active |
| Number of Outputs | 1 | 1 | -- | 1 |
| Package | VQFN (RGY)-20 | -- | VQFN-20 | VQFN-20 |
| Topology | Buck | Boost | -- | Buck |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
NCP1034DR2GonsemiSimilaronsemi
Pin NoPkg NoElec Mixed
Buck Regulator Positive Output Step-Down DC-DC Controller IC 16-SOIC
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Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
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BQ24123RHLRG4Texas InstrumentsSynchronous Switch-mode 2-cell Li-ion charger w/2A FET, enhanced EMI performance 20-VQFN -40 to 85
BQ25017RHLRTexas InstrumentsStandalone 1-cell, 0.5-A Li-ion battery charger w/ synchronous buck converter, fixed output 1.8V 20-VQFN -40 to 125
DPA02257RGBRTexas InstrumentsLow Input Voltage, 6A Synchronous Step-Down SWIFT™ Converter for DDR Memory Termination 20-VQFN -40 to 85
