參數(shù)資料
型號: R5523N
廠商: Ricoh Co., Ltd.
英文描述: USB HIGH-SIDE POWER SWITCH
中文描述: USB高側(cè)電源開關
文件頁數(shù): 6/12頁
文件大?。?/td> 333K
代理商: R5523N
R5523N
6
OPERATION
This explanation is based on the typical application.
Over-current limit Function
In case that OUT pin and GND is short, if over-current would continue, the temperature of the IC would
increase drastically. If the temperature of the IC is equal or more than 135°C (Typ.), the switch transistor
turns off because of thermal shutdown protection. In other words, when the temperature of the IC be-
comes equal or more than 135°C( Typ.), both the over-current limit circuit and thermal shutdown circuit
work for the protection of the IC.
TEST CIRCUITS
(1) Supply Current Test Circuit
(2) Switch On Resistance Test Circuit
1
5
2
GND
OUT
EN
FLG
4
IN
V
IN
A
V
EN
3
0.1
μ
F
1
5
2
GND
OUT
EN
FLG
4
IN
V
IN
V
EN
3
0.1
μ
F
I
OUT
V
V
ON
(3) Output On Time Test Circuit
(4) Over-current Limit Test Circuit
1
5
2
GND
OUT
EN
FLG
4
IN
V
IN
V
EN
3
0.1
μ
F
V
OUT
10
1
5
2
GND
OUT
EN
FLG
4
IN
V
IN
A
V
EN
3
0.1
μ
F
I
OUT
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