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MAX689 - High-Accuracy / Low-Dropout Linear Regulators

Download the MAX689 datasheet PDF. This datasheet also covers the MAX687 variant, as both devices belong to the same high-accuracy / low-dropout linear regulators family and are provided as variant models within a single manufacturer datasheet.

Description

The MAX687/MAX688/MAX689 low-dropout linear regulators operate with an input-to-output voltage differential limited only by an external PNP transistor.

Outputs are fixed at 3.3V (MAX687/MAX688) or 3.0V (MAX689).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX687_MaximIntegratedProducts.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription

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19-0329; Rev 0; 12/94 EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL High-Accuracy, Low-Dropout Linear Regulators MAX687/MAX688/MAX689 _______________General Description The MAX687/MAX688/MAX689 low-dropout linear regulators operate with an input-to-output voltage differential limited only by an external PNP transistor. Outputs are fixed at 3.3V (MAX687/MAX688) or 3.0V (MAX689). The only external components required are a PNP pass transistor and output, compensation, and bypass capacitors. Base drive to the external transistor is at least 10mA, permitting output currents to exceed 1A when using high-gain transistors (β > 100). Output current limiting is implemented by limiting the external transistor’s base current. Output voltage monitoring and shutdown functions are included. The 3.
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