TPS5450DDARG4

TEXAS INSTRUMENTS  TPS5450DDARG4  直流-直流开关降压逐步递减稳压器, 可调, 5.5V-36V输入, 1.22V-31V输出, 5A输出, PPAD-8

The is a 5A 500kHz Step-down 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 under-voltage-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 is reduced to 18µA typically. Other features include an active-high enable, over-current limiting, over-voltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.

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Up to 5A continuous 6A peak output current

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High efficiency greater than 90% enabled by 110mR integrated MOSFET switch

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Wide output voltage range adjustable down to 1.22V with 1.5% initial accuracy

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Internal compensation minimizes external parts count

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18µA Shutdown supply current

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Improved line regulation and transient response by input voltage feed-forward

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System protected by over-current limiting, overvoltage protection and thermal shutdown

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Green product and no Sb/Br

This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.