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RT9709 - Integrated Over Voltage Protection Circuit

Datasheet Summary

Description

The RT9709 is an integrated circuit (IC) optimized to protect low voltage system from abnormal high voltage input up to 28V.

The IC monitors the input voltage, battery voltage and the charging current to make sure all three parameters are operated in normal range.

Features

  • z Fully Integrated Protection Circuit for Three Protection Variables ` User Programmable OCP Threshold ` Input OVP Less than 1us ` Battery OVP z Up to 30V Over Voltage Protection z High Accuracy Protection Threshold z High Immunity of False Triggering Under Transients z Warning Indication Output z Enable Input z Thermally Enhanced WDFN Package z RoHS Compliant and Halogen Free.

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Datasheet Details

Part number RT9709
Manufacturer Richtek
File Size 184.83 KB
Description Integrated Over Voltage Protection Circuit
Datasheet download datasheet RT9709 Datasheet
Additional preview pages of the RT9709 datasheet.

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Full PDF Text Transcription

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RT9709 Integrated Over Voltage Protection Circuit General Description The RT9709 is an integrated circuit (IC) optimized to protect low voltage system from abnormal high voltage input up to 28V. The IC monitors the input voltage, battery voltage and the charging current to make sure all three parameters are operated in normal range. It also monitors its own temperature and turns the MOSFET off when the chip temperature exceeds 140°C. The RT9709 can supportAC charger or USB charger. When the input voltage exceeds the OVP threshold, the IC turns off the MOSFET within 1us to remove the power before any damage occurs. The current in the MOSFET is also limited to prevent charging the battery with an excessive current.
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