Switch ICs

USB High-side Switch

R5524x Basic circuit example
*) FLG pin is N-channel open drain output.
*2) For the USB standard, the capacitor value of 120µF or more must be connected with the output pin.
But can be used about 47µF capacitor.

The functions of the USB high-side switch are mainly as follows:

  • ON/OFF control of the USB power line
    By an enable signal from the USB host controller, the USB highside switch turns on USB power line smoothly with its soft-start function and turns off to cut off the external low-side device.
  • Protection of the USB power line
    In addition to an abnormal over heat protection, when the USB high-side switch detects an over current , it limits an over current to a constant current or cuts off a USB power line by latch-off protection function.

USB High-side Switch

Product
Name
Class Package AEC-
Q100
Operating
Temp.
Range
Input
Voltage
Range
(Absolute
Max.)
ON
Resistance
Supply
Current
 Current Limit
Threshold
Short Current
Limit
Flag
Delay
Time
UVLO
Detect
Voltage
Int.
FET
EN Protection Remarks Data
Sheet
(PDF)
TYP. TYP. MAX. TYP. MAX. TYP.
R5523N H SOT-23-5   -40 to 85°C 2.2V to 5.5V
(6.5V)
130mΩ 20µA 1.0A 1.8A 750mA 1.5A 10ms 1.8V Pch. H/L Latch-off type Built-in Soft-start function
Thermal
Download
R5524N001
R5524N002
A SOT-23-5   -40 to 85°C 2.7V to 5.5V
(6.0V)
100mΩ 110µA 800mA 980mA 650mA 800mA 20ms 2.4V Nch. H Latch-off type,
Constant current type
Built-in Soft-start function,
Auto-discharge function
selectable
Thermal Reverse
Download
R5524N004 1.55A 1.85A 650mA 800mA
Thermal : Thermal Shutdown Circuit   Reverse : Reverse Current Protection Circuit

AEC-Q100

[ Automotive Class ]
Ricoh provides three classes of automotive products corresponding to required quality level.
 

Automotive ICs

 
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