US16855 Datasheet, PDF (2/8 Pages) Unisonic Technologies – DUAL HIGH-SIDE SWITCH FOR USB APPLICATION

US16855
„ PIN CONFIGURATION
Preliminary
CMOS IC
„ PIN DESCRIPTION
PIN NO.
1, 4
2, 3
6
7
8, 5
PIN NAME
CTL1/CTL2
FLG1/FLG2
GND
IN
OUT1/OUT2
DESCRIPTION
Control : TTL Input
Over Current Detect Flag : Active-L, Nch open-drain
Ground
Power Supply : Source of MOSFET
Output of Switch : Drain of MOSFET
„ DESCRIPTION of UTC US16855 FUNCTION
CTL Input Logic
“H” active
Switch Operation with Over-Current Detect
Switch Off regardless of CTL Input
„ TRUTH TABLE (H: High, L: Low, ON: Turn on, OFF: Turn off, X: H or L)
CTL1
H
H
L
L
H
H
X
X
FLG1
H
H
H
H
L
H
L
L
OUT1
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
CTL2
H
L
H
L
H
H
X
X
FLG2
H
H
H
H
H
L
L
L
OUT2
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
Operating mode
Normal mode
Only OUT1 is ON
Only OUT2 is ON
Standby mode
Only OUT1 is over-current detect
Only OUT2 is over-current detect
TSD mode
UVLO mode
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R502-558.a