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R5550 Series
Intelligent Power Switch IC

Product Specifications

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(PLP)1010-4F package called a flip chip is available.

FEATURES

Input Voltage Range (Maximum Rating) 2.3 V to 5.25 V (6.0 V)
Supply Current Typ. 2.6 µA (Enabled, VSENSE=2.0V)
Switch ON Resistance Typ. 180 mΩ (VIN=3.3V, IOUT=100mA)
UVLO Released Voltage Typ. 2.1 V
Output Current 1 A
Over Current Threshold Typ. 460 mA
Current Limit Threshold Typ. 1470 mA
Detector Threshold Typ. 0.5 V (Accuracy : ± 3%)
Short Current Limit Typ. 300 mA
Over Current / Low Voltage Detection Time Protection Delay Time1 Typ. 10 ms
OFF Time1 Typ. 80 ms
ON Time1 Typ. 2.5 ms
Current Limit Detection Time Protection Delay Time2 Typ. 1.33 ms
OFF Time2 Typ. 80 ms
ON Time2 Typ. 1.33 ms
Reset Protection Circuit Auto Release
Package DFN(PLP)1010-4F

APPLICATION INFORMATION

TIMING CHART

Over Current Detection

Current Limit Detection

Low Voltage Detection

TYPICAL CHARACTERISTICS

Output Voltage vs. Output Current

PIN DESCRIPTION

DFN(PLP)1010-4F

DFN(PLP)1010-4F1.0 mm × 1.0 mm
1 GND
2 VSENSE
3 VIN
4 VOUT

R5550 Series for Consumer

APPLICATIONS

  • Load Switch for portable communication equipments

SELECTION GUIDE

Product Name   Package Quantity per Reel
R5550K001A-TR Consumter DFN(PLP)1010-4F 10,000

DOCUMENT/CONTACT

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Package *1 Marking Reliability *2
DFN(PLP)1010-4F R5550K R5550K

*1: The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and land pattern (foot pattern).
*2: Reliability file includes a reliability test report and a reflow profile.

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