MIC2582 Datasheet, PDF (6/22 Pages) Micrel Semiconductor – Single Channel Hot Swap Controllers

MIC2582/MIC2583
Symbol
Parameter
Condition
V_FB
Power-Good Threshold Voltage
FB rising
FB falling
V_FBHYS
V_OL
FB Hysteresis
/POR, /FAULT, PWRGD
Output Voltage
(/FAULT, PWRGD MIC2583/83R only)
I_OUT = 1mA
R_DIS
Output Discharge Resistance
(MIC2583/83R only)
AC Parameters (Note 4)
t_OCFAST
Fast Overcurrent SENSE to GATE
Low Trip Time
V_CC = 5V
V_CC – V_SENSE = 100mV
C_GATE = 10nF
Figure 2
t_OCSLOW
Slow Overcurrent SENSE to GATE
Low Trip Time
V_CC = 5V, V_CC – V_SENSE = 50mV
C_FILTER = 0
Figure 2
t_ONDLY
t_FBDLY
ON Delay Filter
FB Delay Filter
Note 1.
Note 2.
Note 3.
Note 4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Specification for packaged product only.
Not a tested parameter, guaranteed by design.
Timing Diagrams
(V_CC – V_SENSE)
GATE
50mV
V_TRIPFAST
t_OCSLOW
1V
1V
Figure 2. Current Limit Response
Micrel
Min Typ Max Unit
1.19 1.24 1.29
V
1.15 1.20 1.25
V
40
mV
0.4
V
500 1000 Ω
1
µs
5
µs
20
µs
20
µs
t_OCFAST
FB
/POR
1.2V
t_POR
1.5V
/PWRGD
1.5V
Figure 3. Power-On Reset Response
MIC2582/MIC2583
V_CC
V_UVLO
t_START
1V
V_GATE
Figure 4. Power-On Start-Up Delay Timing
6
April 2003