MIC2588_05 Datasheet, PDF (5/21 Pages) Micrel Semiconductor – Single-Channel, Negative High-Voltage Hot Swap Power Controllers

MIC2588/MIC2594
Micrel
AC Electrical Characteristics⁽⁵⁾
Symbol
Parameter
Condition
Min Typ Max Units
t_FLT
Built-in Overcurrent Nuisance Trip
Time Delay⁽⁶⁾ (Figure 1)
400
µs
t_OCSENSE
t_OVPHL
t_OVPLH
t_UVPHL
t_UVPLH
t_PGL(1)
t_PGL(2)
t_PGH(1)
t_PGH(2)
Overcurrent Sense to GATE Low
(Figure 2)
V_SENSE – V_EE = 100mV
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⁾ R_PULLUP = 100kΩ, C_LOAD on PWRGD = 50pF
(-1 Version parts only)
DRAIN Low to /PWRGD Output Low⁽⁶⁾ R_PULLUP = 100kΩ, C_LOAD on /PWRGD = 50pF
(-2 Version parts only)
DRAIN Low to PWRGD Output High⁽⁶⁾ R_PULLUP = 100kΩ, C_LOAD on PWRGD = 50pF
(-1 Version parts only)
DRAIN High to /PWRGD Output High⁽⁶⁾ R_PULLUP = 100kΩ, C_LOAD on /PWRGD = 50pF
(-2 Version parts only)
3.5
µs
1
µs
1
µs
1
µs
1
µs
1
µs
1
µs
2
µs
2
µs
Notes:
5. Specification for packaged product only.
6. Not 100% production tested. Parameters are guaranteed by design.
Timing Diagrams
I_LIMIT
I_LOAD
0A
t < t_FLT
OVERCURRENT
EVENT
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
September 2005
V_SENSE - V_EE
V_GATE
100mV
t_OCSENSE
1V
Figure 2. SENSE to GATE LOW Timing Response
5
M9999-083005