STMicroelectronics L4973D3.3 DC DC Switching Regulators
Buck Switching Regulator IC Positive Adjustable (Fixed) 0.5V (3.3V) 1 Output 3.5A 20-SOIC (0.295", 7.50mm Width)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
L4973D3.3
Detailed Description
SOP-20-300mil DC-DC Converters
Package
20-SOIC (0.295, 7.50mm Width)
Key Features
Package / Case: 20-SOIC (0.295, 7.50mm Width)
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
L4973D3.3 Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics L4973D3.3 DC DC Switching Regulators technical specifications.
General
Package / Case
20-SOIC
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 150°C (TJ)
Lifecycle Status
Obsolete
Functions
Step-Down
Topology
Buck
Output Type
Adjustable (Fixed)
Switching Frequency
100kHz ~ 300kHz
Output Current
3.5A
Output Configuration
Positive
Alternate Parts Comparison (L4973D3.3 vs L7987TR vs STBB1-APUR vs L6982NDR)
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-SOIC | 16-TSSOP | 10-VFDFN Exposed Pad | 8-SOIC |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 85°C (TJ) | -40°C ~ 150°C (TJ) |
| Switching Frequency | 100kHz ~ 300kHz | 250kHz ~ 1.5MHz | 1.5MHz | 400kHz |
| Max Input Voltage | 55V | 61V | 5.5V | 38V |
| Min Input Voltage | 8V | 4.5V | 2V | 3.5V |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 3.5A | 3A | 1.6A (Switch) | 2A |
| Output Type | Adjustable (Fixed) | Adjustable | Adjustable | Adjustable |
| Output Voltage | 0.5V (3.3V) | 0.8V | 1.2V | 0.85V |
| Synchronous Rectifier | No | No | Yes | Yes |
| Topology | Buck | Buck | Buck-Boost | Buck |
| Voltage Output Max | 50V | 61V | 5.5V | 38V |
| Action |
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