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| MIC2012_05 Datasheet, PDF (10/16 Pages) Micrel Semiconductor – USB Power Controller | |||
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MIC2012
Functional Characteristics
AUX Start-up by UVLO
VAUX ramps from 0V to 5V
ERVVNMLMOAAI=ANDI=[N=OS5N=30]#CV=LA0U=VX
= 5V
100F
CLOAD = 1F RL = 10
TIME (500s/div)
Main Start-up by UVLO
VMAIN = VAUX;VMAIN & VAUX ramp from 0V to 5V
S3# = 5V
EN = [ON]
RLOAD = 10
CLOAD = 1F
3.20V
TIME (500s/div)
Main Turn-On Response
AUX Shutdown by UVLO
2.96V
Micrel
VAUX ramps from 5V to 0V
VMAIN = S3# = 0V
EN = [ON]
RLOAD = 50
CLOAD = 1F
VMAIN = VAUX = 5V
CL = 100F
RL = 10
TIME (10ms/div)
Main Shut-down by UVLO
2.96V
S3# = 5V
EN = [ON]
RLOAD = 10½
CLOAD = 1µF
VMAIN = VAUX;VMAIN & VAUX ramp from 5V to 0V
TIME (10ms/div)
Main Turn-Off Response
VMAIN = VAUX =5V
S3# = 5V
EN toggles from [OFF] to [ON]
RLOAD = 10
CLOAD = 1F
TIME (250s/div)
MIC2012/2072
10
VMAIN = VAUX =5V
S3# = 5V
EN toggles from [ON] to [OFF]
RLOAD = 10
CLOAD = 1F
TIME (100s/div)
January 2005
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