A6983IQTR
ActiveDC/DC SWITCHING REGULATOR, ADJ, SYNCHRONOUS BUCK (STEP DOWN), 1-OUTPUT, 850 MV TO 38 V, 3 A, 1 MHZ,… MORE
A6983IQTR
ActiveDC/DC SWITCHING REGULATOR, ADJ, SYNCHRONOUS BUCK (STEP DOWN), 1-OUTPUT, 850 MV TO 38 V, 3 A, 1 MHZ,… MORE
Technical Specifications
Parameters and characteristics for this part
| Specification | A6983IQTR |
|---|---|
| Current - Output | 4.5 A |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 200 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive, Isolation Capable |
| Output Type | Adjustable |
| Package / Case | 16-WFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 38 V |
| Voltage - Input (Min) [Min] | 3.5 V |
| Voltage - Output (Max) | 38 V |
| Voltage - Output (Min/Fixed) | 0.85 V |
STEVAL-A6983CV1 Series
Automotive-grade 38 V, 3 A synchronous step-down converter with 25 µA quiescent current
| Part | Voltage - Input (Max) [Max] | Topology | Output Type | Voltage - Output (Min/Fixed) | Output Configuration | Function | Mounting Type | Frequency - Switching [Min] | Frequency - Switching [Max] | Current - Output | Synchronous Rectifier | Voltage - Output (Max) | Voltage - Input (Min) [Min] | Package / Case | Number of Outputs | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Main Purpose | Board Type | Voltage - Input [Max] | Voltage - Input [Min] | Utilized IC / Part | Regulator Topology | Supplied Contents | Outputs and Type | Outputs and Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 STMicroelectronics | 38 V | Buck | Adjustable | 0.85 V | Positive | Step-Down | Surface Mount | 200 kHz | 2.3 MHz | 3 A | 38 V | 3.5 V | 16-WFQFN Exposed Pad | 1 | 16-QFN (3x3) | 150 °C | -40 °C | ||||||||||
STMicroelectronics | 38 V | Buck | Adjustable | 0.85 V | Isolation Capable Positive | Step-Down | Surface Mount | 200 kHz | 1 MHz | 4.5 A | 38 V | 3.5 V | 16-WFQFN Exposed Pad | 1 | 16-QFN (3x3) | 150 °C | -40 °C | ||||||||||
 STMicroelectronics | 3 A | DC/DC Step Down | Fully Populated | 38 V | 3.5 V | A6983C | Buck | Board(s) | Non-Isolated | 1 |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.93 | |
| 10 | $ 3.53 | |||
| 25 | $ 3.33 | |||
| 100 | $ 2.89 | |||
| 250 | $ 2.74 | |||
| 500 | $ 2.46 | |||
| 1000 | $ 2.07 | |||
| Digi-Reel® | 1 | $ 3.93 | ||
| 10 | $ 3.53 | |||
| 25 | $ 3.33 | |||
| 100 | $ 2.89 | |||
| 250 | $ 2.74 | |||
| 500 | $ 2.46 | |||
| 1000 | $ 2.07 | |||
| Tape & Reel (TR) | 3000 | $ 1.97 | ||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 3.54 | |
| 10 | $ 2.47 | |||
| 25 | $ 2.37 | |||
| 50 | $ 2.29 | |||
| 100 | $ 2.21 | |||
| 250 | $ 2.10 | |||
| 500 | $ 2.03 | |||
| 1000 | $ 1.97 | |||
Description
General part information
STEVAL-A6983CV1 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.