Technical Specifications
Parameters and characteristics for this part
| Specification | L5981TR |
|---|---|
| Current - Output | 1 A |
| Frequency - Switching [Max] | 1 MHz |
| Frequency - Switching [Min] | 250 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 |
| Output Type | Adjustable |
| Package / Case | 8-VFDFN Exposed Pad |
| Supplier Device Package | 8-VFQFPN (3x3) |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 18 V |
| Voltage - Input (Min) [Min] | 2.9 V |
| Voltage - Output (Max) [Max] | 18 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
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 | $ 2.85 | |
| 10 | $ 2.56 | |||
| 25 | $ 2.41 | |||
| 100 | $ 2.05 | |||
| 250 | $ 1.93 | |||
| 500 | $ 1.69 | |||
| 1000 | $ 1.40 | |||
| Digi-Reel® | 1 | $ 2.85 | ||
| 10 | $ 2.56 | |||
| 25 | $ 2.41 | |||
| 100 | $ 2.05 | |||
| 250 | $ 1.93 | |||
| 500 | $ 1.69 | |||
| 1000 | $ 1.40 | |||
| Tape & Reel (TR) | 4000 | $ 1.19 | ||
Description
General part information
L5981 Series
The L5981 is a step-down switching regulator with a 1.5 A (min.) current limited embedded Power MOSFET, so it is able to deliver in excess of 1 A DC current to the load depending on the application condition.
The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
Documents
Technical documentation and resources