MIC2588/MIC2594
Micrel
Condition
Min
Typ
400
V
SENSE
– V
EE
= 100mV
1
1
1
1
R
PULLUP
= 100kΩ, C
LOAD
on PWRGD = 50pF
R
PULLUP
= 100kΩ, C
LOAD
on /PWRGD = 50pF
R
PULLUP
= 100kΩ, C
LOAD
on PWRGD = 50pF
1
1
2
2
3.5
Max
Units
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
AC Electrical Characteristics
(5)
Symbol
t
FLT
t
OCSENSE
t
OVPHL
t
OVPLH
t
UVPHL
t
UVPLH
t
PGL(1)
t
PGL(2)
t
PGH(1)
t
PGH(2)
Notes:
5. Specification for packaged product only.
6. Not 100% production tested. Parameters are guaranteed by design.
Parameter
Built-in Overcurrent Nuisance Trip
Time Delay
(6)
(Figure 1)
Overcurrent Sense to GATE Low
(Figure 2)
OV to GATE Low
(6)
(Figure 3)
OV to GATE High
(6)
(Figure 3)
UV to GATE Low
(6)
(Figure 4)
UV to GATE High
(6)
(Figure 4)
DRAIN High to PWRGD Output Low
(6)
(-1 Version parts only)
DRAIN Low to /PWRGD Output Low
(6)
(-2 Version parts only)
DRAIN Low to PWRGD Output High
(6)
(-1 Version parts only)
DRAIN High to /PWRGD Output High
(6)
R
PULLUP
= 100kΩ, C
LOAD
on /PWRGD = 50pF
(-2 Version parts only)
Timing Diagrams
OVERCURRENT
EVENT
I
LIMIT
I
LOAD
0A
t < t
FLT
t
t
FLT
Load current is regulated
at I
LIMIT
= 50mV/R
SENSE
Output OFF
(at V
DD
)
V
DRAIN
V
GATE
(V
EE
+10V)
(at V
EE
)
(at V
EE
)
Reduction in V
DRAIN
to support
I
LIMIT
= 50mV/R
SENSE
(at V
EE
)
Figure 1. Overcurrent Response
100mV
V
SENSE
- V
EE
t
OCSENSE
V
GATE
1V
Figure 2. SENSE to GATE LOW Timing Response
September 2005
5
M9999-083005
MICREL [ MICREL SEMICONDUCTOR ]
