US16855 Datasheet, PDF (7/8 Pages) Unisonic Technologies – DUAL HIGH-SIDE SWITCH FOR USB APPLICATION

US16855
Preliminary
CMOS IC
„ FUNCTION DESCRIPTION(Cont.)
THERMAL SHUTDOWN
The UTC US16855 is internally protected against excessive power dissipation by thermal shutdown protection
circuit. If device junction temperature rise above approximately 150℃, both switches are turned off, both fault FLAG
outputs are activated, and they goes low. Hysteresis ensures that both switches turned off by thermal shutdown will
not be turned on again until the die temperature is reduced to 145℃. When the thermal shutdown circuit is activated,
the output pins are in the OFF status. However, the UTC US16855 enters the standby status when CTL pins are all
inactive.
5V
IN (Input)
OUT (Output)
GND
5V
GND
5V
Flg (Output) GND
5V
CTL (Input) GND
Stand-by
Non-stand-by
Tch
Thermal shutdown operating
temperature (up)
Thermal shutdown operating
temperature (down)
„ TEST CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 8
QW-R502-558.a