MAX5035BUPA+

MAXIM INTEGRATED PRODUCTS  MAX5035BUPA+  芯片, 直流/直流转换器, 降压, 1A, 76V

The is a 1A, 76V, high efficiency MAXPower step-down DC-DC converter in 8 pin DIP package. This DC-DC converter operates from a 7.5V to 76V input voltage range. A unique voltage-mode control scheme with voltage feed-forward and an internal switching DMOSFET provides high efficiency over a wide input voltage range. This pulse width modulated converter operates at a fixed 125KHz switching frequency. The device also features automatic pulse-skipping mode to provide low quiescent current and high efficiency at light loads. Under no load, it consumes only 270µA and in shutdown mode, consumes only 10µA. The IC also features undervoltage lockout, cycle-by-cycle current limit, hiccup mode output short circuit protection and thermal shutdown. The device uses an internal low on-resistance, high voltage, DMOS transistor to obtain high efficiency and reduce overall system cost.

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Fixed 5V output voltage

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Output current of 1A

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Efficiency up to 90% at VIN = 12V, ILOAD = 0.5A

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Internal 0.4ohm high-side DMOS FET

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Internal frequency compensation

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Undervoltage lockout of 5.2V

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Maximum quiescent supply current is 440µA at VFB = 5.5V, VIN = 7.5V to 76V,

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Load regulation is 150 ohm