TPS5430

TPS5430, TPS5431 SLVS632K – JANUARY 2006 – REVISED JANUARY 2024 TPS543x 3A, Wide Input Range, Step-Down Converter 1 Features Wide input voltage range: – TPS5430: 5.5V to 36V – TPS5431: 5.5V to 23V Up to 3A continuous (4A peak) output current High efficiency up to 95% enabled by 100mΩ integrated MOSFET switch Wide output voltage range: adjustable down to 1.22V with 1.5% initial accuracy Internal compensation minimizes external parts count Fixed 500kHz switching frequency for small filter size Improved line regulation and transient response by input voltage feedforward System protected by overcurrent limiting, overvoltage protection, and thermal shutdown –40°C to 125°C operating junction temperature range Available in small thermally enhanced 8-pin SO PowerPAD™ integrated circuit package Create a custom design using the TPS5430 with the WEBENCH® Power Designer 2 Applications Consumer: set-top box, DVD, LCD displays Industrial and car audio power supplies Battery chargers, high-power LED supply 12V and 24V distributed power systems 3 Description The TPS543x is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltagelockout circuit to prevent start-up until the input voltage reaches 5.5V; an internally set slow-start cir...