tps54418 is a high efficient 4a synchronous step down chip launched by ti. it integrates two 30 mΩ mosfets, supports 200khz to 2mhz switching frequency, and uses qfn package, which is small and can be used in various switch power supply designs.
The TPS54418 is a 6 V, 4 A synchronous step‑down current‑mode converter that integrates two MOSFETs in a 3 mm × 3 mm QFN package. It offers a wide input range of 2.95 V to 6 V, up to 2 MHz switching frequency, and a +1 % voltage reference over temperature, enabling compact designs with reduced external components.
The device includes features such as adjustable slow‑start, UV/OV power‑good output, cycle‑by‑cycle current limiting, thermal and frequency fold‑back protection, and a shutdown mode that reduces quiescent current to 2 µA. Detailed electrical characteristics, pin descriptions, and layout guidelines are provided for designers.
| Input voltage range | 2.95 V – 6 V |
|---|---|
| Maximum output current | 4 A |
| Switching frequency range | 200 kHz – 2 MHz |
| Voltage reference accuracy | ±1 % over temperature |
| Under‑voltage lockout threshold | 2.6 V |
The device operates from 2.95 V to 6 V input.
It can provide up to 4 A of output current.
The converter can switch between 200 kHz and 2 MHz.