Micrel
MIC2587/MIC2587R
DC Electrical Characteristics
(4)
V
CC
= +24V and +48V, T
A
= 25°C, unless otherwise noted.
BOLD
indicates specifications apply over the full operating temperature
range of -40°C to +85°C.
Symbol
I
TIMERDN
V
TIMERH
V
TIMERL
V
ONH
V
ONL
V
HYSON
I
ON
V
OL
Parameter
TIMER Pin Pull-down Current
TIMER Pin High Threshold Voltage
TIMER Pin Low Threshold Voltage
ON Pin High Threshold Voltage
ON Pin Low Threshold Voltage
ON Pin Hysteresis
ON Pin Input Current
Power-Good Output Voltage
0V
≤
V
ON
≤
80V
PWRGD or /PWRGD = LOW
I
OL
= 1.6 mA
I
OL
= 4 mA
I
OFF
Power-Good Leakage Current
PWRGD or /PWRGD = Open-Drain
V
PG
= V
CC
, V
ON
= 1.5V
0.4
0.8
10
V
V
µA
ON Low-to-High transition
ON High-to-Low transition
Condition
(V
CC
– V
SENSE
) < V
TRIP
V
TIMER
= 0.6V
1.280
0.4
1.280
1.208
1.313
0.49
1.313
1.233
80
2
1.345
0.6
1.355
1.258
V
V
V
V
mV
µA
Min
1.5
Typ
3.5
Max
5
Units
µA
AC Electrical Characteristics
V
CC
= +24V and +48V, T
A
= 25°C unless otherwise noted.
BOLD
indicates specifications apply over the full operating temperature
range of -40°C to +85°C.
Symbol
t
PONLH
t
PONHL
t
PFBLH
t
PFBHL
t
PFBHL
t
PFBLH
t
OCSENSE
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
4. Specification for packaged product only.
Parameter
ON High to GATE High
ON Low to GATE Low
FB Valid to PWRGD High
(MIC2587/87R-1)
FB Invalid to PWRGD Low
(MIC2587/87R-1)
FB Valid to /PWRGD Low
(MIC2587/87R-2)
FB Invalid to /PWRGD High
(MIC2587/87R-2)
Overcurrent Sense to GATE Low
Trip Time
Condition
IRF530, C
GATE
= 10nF
V
IN
= 48V, IRF530, C
GATE
= 10nF
R
PG
= 50kΩ pull-up to 48V
C
L
=100pF
R
PG
= 50kΩ pull-up to 48V
C
L
=100pF
R
PG
= 50kΩ pull-up to 48V
C
L
=100pF
R
PG
= 50kΩ pull-up to 48V
C
L
=100pF
(V
CC
- V
SENSE
) = (V
TRIP
+ 10mV)
Figure 7
Min
Typ
3
1
2
4
4
2
1
Max
Units
ms
ms
µs
µs
µs
µs
2
µs
October 2004
6
M9999-102204
(408) 955-1690
MICREL [ MICREL SEMICONDUCTOR ]
