TPS5410

TPS5410 SLVS675E – AUGUST 2006 – REVISED JANUARY 2024 TPS5410 1A, Wide Input Range, Step-Down Converter 1 Features 5.5V to 36V wide input voltage range Up to 1A continuous (1.2A peak) output current High efficiency up to 95% enabled by 110mΩ 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 8-pin SOIC package 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 Simplified Schematic 3 Description The TPS5410 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 is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current...