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R5550 Series
Intelligent Power Switch IC

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  • Description

    The R5550 Series are CMOS-based intelligent power switch IC. R5550 is a protection IC used in power line with built-in current limit circuit and under-voltage lockout circuit (UVLO). Due to a built-in 180mΩ on-resistor, R5550 can provide a low supply current.

    R5550 can detect two different over current threshold and under voltage error. When the R5550 detects over current, the switch turns off after the preset delay time (10ms). If the output current exceeds the larger current limit, the current is limited by the preset value immediately, and the switch turns off after the preset delay time (1.33ms).

    R5550 has VSENSE pin. If an abnormal low voltage is detected, after the preset delay time (10ms), the switch turns off. After detecting the abnormal situation, the switch turns on automatically if the cause of the error is removed. A 1mm square DFN(PL)1010-4F package called a flip chip is available.

  • Spec
    Consumer
    Input Voltage Range 2.3 V to 5.25 V (6.0 V)
    Operating Temperature Range -40°C to 85°C (125°C)
    Supply Current Typ. 2.6 µA (Enable, VSENSE = 2.0 V)
    Output Current 1 A
    ON-resistance 180 mΩ (VIN = 3.3 V, IOUT = 100 mA)
    Internal FET Pch
    Package DFN(PL)1010-4F
    SENSE Pin Detector Threshold Typ. 0.5 V
    SENSE Pin Detector Threshold Accuracy ±3%
    Download Datasheet

    Protections / Functions

    TSD Reverse OCP UVLO OVLO Soft Start PGOOD Auto Discharge Reset
    Functional Description
  • Technical
    Documents

    • Typical Application

      Typical Application

    • Output Voltage vs. Output Current

      Output Voltage vs. Output Current

    • Timing Chart Current Limit Detection

      Timing Chart Current Limit Detection

    • Timing Chart Low Voltage Detection

      Timing Chart Low Voltage Detection

    • Timing Chart Over Current Detection

      Timing Chart Over Current Detection

  • Quality &
    Packages
    Product Name Compatibility Package Marking Reliability
    R5550K001A-TR
    • gradeConsumer
    		 DFN(PL)1010-4F R5550K R5550K
    • Refer to the datasheets for the details on the product.
    • The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
  • Sample / Buy
Similar Products

Download Datasheet

Functional Description

TSD Thermal Shutdown Function
Reverse Current Protection Reverse Current Protection
OCP Overcurrent Protection
UVLO Undervoltage Lockout Protection
OVLO Overvoltage Lockout Protection
Soft Start Soft Start Function
PGOOD Power Good Output
Auto Discharge Auto Discharge Circuit

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Category:Switch ICs

Features Intelligent Power SW
VIN
min (V)		 2.3
VIN
max (V)		 5.25
ON Resistance
(mΩ)		 180
IOUT
(mA)		 1000