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MIC2039 - Adjustable Current Limit Power Switch

Description

The MIC2039 is a high-side MOSFET power distribution switch providing increased system reliability by using 5% current-limit accuracy.

The MIC2039 has an operating input voltage range from 2.5V to 5.5V, is internally current limited, and has thermal shutdown to protect the device and system.

Features

  • ±5% current limit accuracy.
  • Input supply range from 2.5V to 5.5V.
  • Low quiescent current: 100µA typical (switch ON).
  • 75mΩ typical RDS(ON) at 5.0V.
  • 0.2A to 2.5A adjustable output current.
  • Kickstart.
  • momentary secondary current-limit threshold (120ms period).
  • Soft-start functionality.
  • Undervoltage lockout (UVLO).
  • Fast 10µs short-circuit response time (non-Kickstart options).
  • Fault status output flag.

📥 Download Datasheet

Datasheet preview – MIC2039

Datasheet Details

Part number MIC2039
Manufacturer Micrel Semiconductor
File Size 1.20 MB
Description Adjustable Current Limit Power Switch
Datasheet download datasheet MIC2039 Datasheet
Additional preview pages of the MIC2039 datasheet.

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Full PDF Text Transcription

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MIC2039 High-Accuracy, High-Side, Adjustable Current Limit Power Switch General Description The MIC2039 is a high-side MOSFET power distribution switch providing increased system reliability by using 5% current-limit accuracy. The MIC2039 has an operating input voltage range from 2.5V to 5.5V, is internally current limited, and has thermal shutdown to protect the device and system. The MIC2039 is offered with either active-high or active-low logic level enable input controls. It has an open drain fault status output flag with a built-in 32ms delay that asserts low during overcurrent or thermal-shutdown conditions. The MIC2039 switches feature an adjustable output current limit that is resistor programmable from 0.2A to 2.5A.
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