STMicroelectronics L3751PUR DC DC Switching Controllers
QFN-20L(3.5x4.5) DC-DC Controllers
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L3751PUR
Detailed Description
QFN-20L(3.5x4.5) DC-DC Controllers
Package
20-VFQFN Exposed Pad
Key Features
Package / Case: 20-VFQFN Exposed Pad; Mounting Type: Surface Mount, Wettable Flank
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
L3751PUR Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L3751PUR DC DC Switching Controllers technical specifications.
General
Package / Case
20-VFQFN Exposed Pad
Mounting Type
Surface Mount, Wettable Flank
Operating Temperature
-40°C ~ 125°C (TJ)
Supply Voltage
6V ~ 75V
Output Type
Transistor Driver
Functions
Step-Down
Switching Frequency
100kHz ~ 1MHz
Number of Outputs
1
Topology
Buck
Control Features
Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start, Sync, Tracking
Alternate Parts Comparison (L3751PUR vs UC3843BN vs UC3845BN vs L6910G)
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 | 8-DIP | 8-DIP | 16-SOIC |
| Mounting Type | Surface Mount, Wettable Flank | Through Hole | Through Hole | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) | 0°C ~ 70°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 6V ~ 75V | 7.6V ~ 30V | 7.6V ~ 30V | 5V ~ 12V |
| Switching Frequency | 100kHz ~ 1MHz | Up to 500kHz | Up to 500kHz | 200kHz |
| Clock Sync | Yes | No | No | No |
| Control Features | Current Limit, Dead Time Control, Enable, Frequency Control, Power Good, Soft Start, Sync, Tracking | Frequency Control | Frequency Control | Current Limit, Frequency Control, Phase Control, Power Good, Soft Start |
| Duty Cycle Max | 99% | 96% | 48% | 100% |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive, Isolation Capable | Positive, Isolation Capable | Positive |
| Output Phases | 1 | 1 | 1 | 1 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Action |
More Parts in DC DC Switching Controllers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.