Micrel
MIC2589/MIC2595
Timing Diagrams
OVERCURRENT
EVENT
t < tFLT
t ≥ tFLT
ILIMIT
ILOAD
tNLD
INLDTH
0A
Output OFF
(at VDD
Load current is regulated
at ILIMIT = 50mV/RSENSE
)
VDRAIN
(at VEE
)
(at VEE
)
(at VEE)
VUV (MIC2589)
V
OFF, VON (MIC2595)
VUVL
VUVH
(VUV VEE
Reduction in V DRAIN to support
LIMIT = 50mV/RSENSE
(VUV VEE
)
)
I
(at VEE
)
Figure 1. Overcurrent and Undercurrent (No Load) Response
Figure 2. SENSE to GATE Timing Response
Figure 3. MIC2589/MIC2595 Overvoltage Response
Figure 4. MIC2589/MIC2589R Undervoltage Response
9
M9999-120505
(408) 955-1690
December 2005