Datasheet Texas Instruments TPS5431DDA — Datenblatt

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Design TPS5430, TPS5431
SLVS632I – JANUARY 2006 – REVISED APRIL 2017 TPS543x 3-A, Wide Input Range, Step-Down Converter
1 Features 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 5.5 V; an internally set slow-start
circuit to limit inrush currents; and a voltage feedforward circuit to improve the transient response.
Using the ENA pin, shutdown supply current is
reduced to 18 ОјA typically. Other features include an
active-high enable, overcurrent limiting, over-voltage
protection and thermal shutdown. To reduce design
complexity and external component count, the
TPS543x feedback loop is internally compensated.
The TPS5431 is intended to operate from power rails …