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R5524 Series

USB High-side Power Switch / Load Switch

  • Consumer
  • Industrial
  • Automotive
  • PLP
  • RoHS

The R5524 Series is a CMOS-based high-side MOSFET switch IC which conforms to the universal serial bus (USB) standard. It can also be used as a load switch IC with protection function. By using an Nch MOSFET with low On-resistance (Typ. 100 mΩ) as a switching transistor, the device can provide low dropout voltage. Internally, the device consists of an overcurrent limiting circuit, a thermal shutdown circuit, an undervoltage lockout (UVLO) circuit and a reverse current protection circuit. The device also consists of an internal delay circuit to prevent the output of false flag signals caused by inrush current. To achieve simplification of layout design, the overcurrent detection accuracy has been improved.

Specs & Datasheets

  Consumer Industrial Automotive
Input Voltage Range 2.7 V to 5.5 V (6.0 V)
Operating Temperature Range -40°C to 85°C (125°C) -40°C to 105°C (125°C) -40°C to 85°C (125°C)
Supply Current Typ. 110 µA
Standby Current Typ. 0.1 µA
Output Current Min. 550 mA
ON-resistance Typ. 100 mΩ (VIN = 5 V)
Internal FET Nch
Package DFN(PLP)1820-6, SOT-23-5 DFN(PLP)1820-6, SOT-23-5 SOT-23-5
Current Limit Threshold Min. 650 mA (R5524x001A/B, R5524x002A/B)
Min. 1.25 A (R5524N004A)
FLAG Delay Time Typ. 20 ms
Thermal Shutdown 135°C

Download Datasheet

Protections / Functions

Functional Description

TSD Reverse OCP UVLO OVLO Soft Start PGOOD Auto Discharge Reset

Technical Documents

Typical Application

Typical Application

*) FLG pin is Nch. open drain output.
*2) For the USB standard, the capacitor value of 120µF or more must be connected with the output pin.

R5524x001x Output Voltage vs. Output Current

R5524x001x Output Voltage vs. Output Current

Quality & Packages

Product Name Compatibility Package Marking Reliability
  • gradeConsumerC
  • plpP
SOT-23-5 R5524N R5524N-FE
  • gradeConsumerC
DFN(PLP)1820-6 R5524K R5524K
  • gradeIndustrialI
  • plpP
SOT-23-5 R5524N R5524N-YE
  • gradeIndustrialI
DFN(PLP)1820-6 R5524K R5524K-Y
  • gradeAutomotiveA
  • plpP
SOT-23-5 R5524N R5524N-AE

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Please contact us or our distributors for unpublished reliability information.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

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Category:Switch ICs

Features USB SW,Load SW
min (V)
max (V)
ON Resistance