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RT9554A - Battery Output Current Sense Protection

Description

The RT9554A is designed for over-current detection.

The current sense amplifier amplifies the voltage across resistor which is connected between CSP and CSN by 200.

The amplified voltage is compared with the voltage of BAT_REF and check whether over-current happens or not.

Features

  • Common Mode Input Range up to 24V.
  • VCC Operating Current : 200μA.
  • VCC Shutdown Current : 5μA (under S3/S4/S5).
  • Programmable Over-Current Level.
  • FLAG Signal goes Low when OCP.
  • RoHS Compliant and Halogen Free.

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Datasheet preview – RT9554A

Datasheet Details

Part number RT9554A
Manufacturer Richtek
File Size 116.28 KB
Description Battery Output Current Sense Protection
Datasheet download datasheet RT9554A Datasheet
Additional preview pages of the RT9554A datasheet.

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Full PDF Text Transcription

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® RT9554A Battery Output Current Sense Protection IC General Description The RT9554A is designed for over-current detection. The current sense amplifier amplifies the voltage across resistor which is connected between CSP and CSN by 200. The amplified voltage is compared with the voltage of BAT_REF and check whether over-current happens or not. The RT9554A also provides a comparator with two input pins, AC_REAL and AC_REF for users. There is an output pin FLAG as an indicator which is a N-MOSFET in open-drain configuration. Users can connect one resistor between the FLAG pin and supply voltage. Either over-current condition occurs or the AC_REAL voltage is larger than the AC_REF voltage, the FLAG is pulled low. The RT9554A is a available in the WDFN-8L 2x2 package.
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