LM26400YMH

TEXAS INSTRUMENTS  LM26400YMH  芯片, 双降压稳压器, 2A

The is a step-down DC/DC Regulator With a minimum number of external components and internal loop compensation, the LM26400Y is easy to use. The ability to drive 2A loads with an internal 175mR NMOS switch using state-of-the-art 0.5µm BiCMOS technology results in a high-power density design. The world class control circuitry allows for an ON-time as low as 40ns, thus supporting high-frequency conversion over the entire input range of 3 to 20V and down to an output voltage of only 0.6V. It utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of line and load conditions. Switching frequency is internally set to 500kHz, optimal for a broad range of applications in terms of size versus thermal tradeoffs. Given a non-synchronous architecture, efficiencies above 90% are easy to achieve. External shutdown is included, enabling separate turn-ON and turn-OFF of the two channels.

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Internal compensation

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Separate enable pins

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Separate soft-start pins

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Frequency foldback protection

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175mR NMOS switch

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Integrated bootstrap diodes

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Over-current protection

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Thermal shutdown