MIC2591B_05 Datasheet, PDF (11/34 Pages) Micrel Semiconductor – Dual-Slot PCI Express Hot-Plug Controller

MIC2591B
Timing Diagrams
t₁
SCL
t₄
SDA
Data In
SDA
Data Out
t₂
t₅
t₃
Figure 1. SMBus Timing
Micrel
V_IN – V_SENSE
V_THFAST
V_THILIMIT
12VGATE
0V
t_OFF(12V)
6V
t
Figure 2. 12V Current Limit Response Timing
I
I_OUT(AUX)
I_AUX(THRESH) ^{Must Trip}
May Not Trip
I_OUT(AUX)
I_LIM(AUX)
0
t
Figure 4. VAUX Current Limit Threshold
V_IN – V_SENSE
V_THFAST
V_THILIMIT
3VGATE
1V
0V
t_OFF(3V)
t
Figure 3. 3V Current Limit Response Timing
I_SC(TRAN)
I
I_OUT(AUX)
t_SC(TRAN)
I_LIM(AUX)
O
t
Figure 5. VAUX Current Limit Response Timing
March 2005
11
M9999-033105