A6983C33QTR
ActiveAUTOMOTIVE-GRADE 38 V, 3 A SYNCHRONOUS STEP-DOWN CONVERTER WITH 25 ΜA QUIESCENT CURRENT
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A6983C33QTR
ActiveAUTOMOTIVE-GRADE 38 V, 3 A SYNCHRONOUS STEP-DOWN CONVERTER WITH 25 ΜA QUIESCENT CURRENT
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Technical Specifications
Parameters and characteristics for this part
| Specification | A6983C33QTR |
|---|---|
| Current - Output | 3 A |
| Frequency - Switching (Max) | 2.3 MHz |
| Frequency - Switching (Min) | 200 kHz |
| Function | Step-Down |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 150 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Type | Fixed |
| Package / Case | 16-WFQFN Exposed Pad |
| Package Length | 3 mm |
| Package Name | 16-QFN |
| Package Width | 3 mm |
| Qualification | AEC-Q100 |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Input (Max) | 36 V |
| Voltage - Input (Min) | 3.5 V |
| Voltage - Output (Min/Fixed) | 3.3 V |
A6983 Series
Automotive-grade 38 V, 3 A synchronous step-down converter with 25 µA quiescent current
| Part | Operating Temperature (Min) | Operating Temperature (Max) | Synchronous Rectifier | Package Width | Package Name | Package Length | Voltage - Input (Min) | Current - Output | Voltage - Output (Max) | Voltage - Output (Min/Fixed) | Voltage - Input (Max) | Number of Outputs | Mounting Type | Package / Case | Frequency - Switching (Max) | Frequency - Switching (Min) | Output Type | Function | Topology | Output Configuration | Qualification | Grade | Total Output Count | Non-Isolated Output Count | Supplied Contents | Board Type | Main Purpose | Regulator Topology | Utilized IC / Part | Voltage - Input (Minimum) | Voltage - Input (Maximum) | Contents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 38 V | 0.85 V | 38 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Adjustable | Step-Down | Buck | Positive | ||||||||||||
STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 5 V | 36 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Fixed | Step-Down | Buck | Positive | AEC-Q100 | Automotive | |||||||||||
STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 38 V | 0.85 V | 38 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Adjustable | Step-Down | Buck | Positive | ||||||||||||
STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 5 V | 36 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Fixed | Step-Down | Buck | Positive | AEC-Q100 | Automotive | |||||||||||
STMicroelectronics | -40 °C | 150 °C | No | 3 mm | 16-QFN | 3 mm | 3.5 V | 4.5 A | 38 V | 0.85 V | 38 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 1 MHz | 200 kHz | Adjustable | Step-Down | Buck | Isolation Capable Positive | ||||||||||||
 STMicroelectronics | 3 A | Non-Isolated | 1 | 1 count | Board(s) | Fully Populated | DC/DC Step Down | Buck | A6983C | 3.5 V | 38 V | Board | ||||||||||||||||||||
STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 3.3 V | 36 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Fixed | Step-Down | Buck | Positive | AEC-Q100 | Automotive | |||||||||||
STMicroelectronics | -40 °C | 150 °C | Yes | 3 mm | 16-QFN | 3 mm | 3.5 V | 3 A | 3.3 V | 36 V | 1 | Surface Mount | 16-WFQFN Exposed Pad | 2.3 MHz | 200 kHz | Fixed | Step-Down | Buck | Positive | AEC-Q100 | Automotive |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | N/A | 3500 | $ 3.29 | 1m+ |
CAD
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Description
General part information
A6983 Series
The A6983I is a device specifically designed for isolated buck topology. The primary output voltage can be accurately adjusted, whereas the isolated secondary output is derived by using a given transformer ratio. No optocoupler is required. The primary sink capability up to -4.5 A (even during soft-start) allows a proper energy transfer to the secondary side, as well as enables a tracked soft-start of the secondary output. The control loop is based on a peak current mode architecture and the device operates in forced PWM. The 390 ns blanking time filters oscillations, generated by the transformer leakage inductance, makes the solution more robust.
Both the compact QFN-16 (3x3 mm) package and the internal compensation of the A6983I help minimizing the design complexity and size.
The switching frequency can be programmed in the 200 kHz to 1 MHz range with an optional spread spectrum for improved EMC.
Documents
Technical documentation and resources