MIC2027 Datasheet, PDF (9/16 Pages) Micrel Semiconductor – Quad USB Power Distribution Switch Preliminary Information

MIC2027/2077
Inrush Current Response
(MIC2027-1)
C_L = 110µF
C_L = 210µF
C_L = 310µF
V_IN = 5V
R_L = 31Ω
C_L = 10µF
TIME (1ms/div.)
Current-Limit Response
(Stepped Short—MIC2027-1)
V_IN = 5V
C_L = 47µF
R_L = stepped short
800mA
TIME (1ms/div.)
Independent Thermal Shutdown
(MIC2027-1)
V_OUTA = No Load
(No Thermal Shutdown)
Thermal Shutdown
V_ENA = 5V
V_ENB = 5V
V_ENC = 0V
V_END = 0V
TIME (100ms/div.)
Micrel
Current-Limit Response
(Ramped Load–MIC2027-1)
V_IN = 5V
C_L = 47µF
Current-Limit
Threshold
(1A)
Short-Circuit
Current (800mA)
Thermal Shutdown
Short
Removed
Thermal
Shutdown
Hysteresis
TIME (100ms/div.)
Current-Limit Response
(MIC2027-1)
V_IN = 5V
C_L = 0
R_L = stepped short
Short-Circuit (800mA)
TIME (50µs/div.)
Independent Thermal Shutdown
(MIC2027-1)
V_OUTB = No Load
(No Thermal Shutdown)
Thermal Shutdown
V_ENA = 5V
V_ENB = 5V
V_ENC = 0V
V_END = 0V
TIME (100ms/div.)
June 2000
9
MIC2027/2077