L6983IQTR
ActiveDC-DC CONVERTER, SYNCHRONOUS BUCK, 3.3 TO 38 V IN, 3V TO 3.6 V OUT, QFN-EP-16
L6983IQTR
ActiveDC-DC CONVERTER, SYNCHRONOUS BUCK, 3.3 TO 38 V IN, 3V TO 3.6 V OUT, QFN-EP-16
Technical Specifications
Parameters and characteristics for this part
| Specification | L6983IQTR |
|---|---|
| Current - Output | 3 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 | Isolation Capable, Positive |
| Output Type | Adjustable |
| Package / Case | 16-WFQFN Exposed Pad |
| Supplier Device Package | 16-QFN (3x3) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 38 V |
| Voltage - Input (Min) [Min] | 3.5 V |
| Voltage - Output (Max) [Max] | 38 V |
| Voltage - Output (Min/Fixed) | 1 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
L6983I Series
The L6983I 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 enabling 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, making the solution more robust.
The compact QFN16 3x3 mm package and the internal compensation of the L6983I help minimize design complexity and size.
The switching frequency can be programmed in the 200 kHz - 1 MHz range with optional spread spectrum for improved EMC. The EN pin provides enable/disable functionality.