TPS5420D

TEXAS INSTRUMENTS  TPS5420D  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, 2A输出, SOIC-8

The is a High-output-current PWM Converter 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 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, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated.

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Up to 2A continuous 3A peak output current

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High efficiency up to 95% 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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Fixed 500kHz switching frequency for small filter size

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Improved line regulation and transient response by input voltage feed forward

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System protected by overcurrent limiting, over voltage protection and thermal shutdown

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Green product and no Sb/Br

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