TIDUF34 july 2023
The TPS6282A is an easy-to-use synchronous step-down DC-DC converter with a very low quiescent current of only 4 μA. Based on the DCS-Control topology, the device provides a fast transient response. The internal reference allows the designer to regulate the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of –40°C to 125°C. The device is pin-to-pin and BOM-to-BOM compatible. The entire design requires a small 470-nH inductor, a single 4.7-µF input capacitor, and two 10-µF or a single 22-µF output capacitor.
The TPS6282A is available in two varieties. The first includes an automatically entered power-save mode to maintain high efficiency down to very light loads for extending the system battery run-time. The second runs in forced-PWM maintaining a continuous conduction mode to provide the least ripple in the output voltage and a quasi-fixed switching frequency. The TPS6282A device features a Power Good signal and an internal soft start circuit. The device is able to operate in 100% mode. For fault protection, the device incorporates a HICCUP short-circuit protection as well as a thermal shutdown. The device is available in a 6-pin 1.5 × 1.5-mm QFN package, offering the highest power density.