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R5550 Series

Intelligent Power Switch IC

  • Consumer
  • RoHS

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.

Specs & Datasheets

  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(PLP)1010-4F
SENSE Pin Detector Threshold Typ. 0.5 V
SENSE Pin Detector Threshold Accuracy ±3%

Download Datasheet

Protections / Functions

Functional Description

TSD Reverse OCP UVLO OVLO Soft Start PGOOD Auto Discharge Reset
             

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
  • gradeConsumerC
DFN(PLP)1010-4F R5550K R5550K

Refer to the datasheets for the details on the product.
The package file includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
Please contact us or our distributors for unpublished reliability information.

Sample / Buy

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

Search for similar products under conditions below.

Category:Switch ICs

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