Micrel, Inc. MIC2590B
September 2008
7
M9999-091808
Symbol Parameter Condition Min Typ Max Units
V
FILTER
C
FILTER
Threshold Voltage 1.20 1.25 1.30 V
I
FILTER
C
FILTER
[A/B] Charge Current V
[5/3]
V
IN
– V
[5/3]
V
SENSE
> V
THILIMIT
1.80 2.5 5.0 µA
I
SLEW
12V
SLEW
[A/B] Charge Current During turn-on only 13 22 35 µA
V
THILIMIT
Current Limit Threshold Voltages
5V[A/B] Supplies
3.3V[A/B] Supplies
V
5VIN
– V
5VSENSE
V
3VIN
– V
3VSENSE
35
35
50
50
65
65
mV
mV
V
THFAST
5V
OUT
[A/B] and 3V
OUT
[A/B]
Fast-Trip Thresholds
MIC2590B-2
MIC2590B-5
90 113
Disabled
135 mV
V
IL
LOW-Level Input Voltage
(SCL,SDA,ON[A/B],A[0-2],GPI[A/B])
0.8 V
V
OL
Output LOW Voltage
/FAULT[A/B], /INT, SDA
I
OL
= 3mA 0.4 V
V
IH
HIGH-Level Input Voltage
SCL,SDA,ON[A/B],A[0-2],
AUXEN[A/B],GPI[A/B])
2.1 V
R
PULL-UP
Internal Pullups from A[0-2] to V
STBY
40 k
I
IL
Input Leakage Current
SCL, ON[A/B],AUXEN[A/B], GP[A/B])
±5 µA
I
LKG(OFF)
Off-State Leakage Current
SDA,/FAULT[A/B],/INT
±5 µA
Overtemperature Shutdown & Reset
Thresholds, with overcurrent on slot
T
J
Increasing, each slot, Note 5
T
J
Decreasing, each slot, Note 5
140
130
°C
°C
T
OV
Overtemperature Shutdown & Reset
Thresholds, all other conditions (all
outputs will latch OFF)
T
J
Increasing, both slots, Note 5
T
J
Decreasing, both slots, Note 5
160
150
°C
°C
R
OUT(ON)
R
OUT(12V)
R
OUT(12MV)
R
OUT(AUX)
Output MOSFET Resistance
12V MOSFET
–12V MOSFET
V
AUX
MOSFET
I
DS
= 500mA, T
J
= 125°C
I
DS
= 100mA, T
J
= 125°C
I
DS
= 375mA, T
J
= 125°C
500
2
400
m
m
V
OFF
V
OFF(+12V)
V
OFF(–12V)
V
OFF(AUX)
Off-State Output Offset Voltage
12V
OUT
[A/B]
12MV
OUT
[A/B]
V
AUX
[A/B]
12V
OUT
[A/B] = Off, T
J
= 125°C
12MV
OUT
[A/B] = Off, T
J
= 125°C
V
AUX
[A/B] = Off, T
J
= 125°C
–50
50
50
mV
mV
mV
I
THSLOW
I
LIM(12)
I
LIM(12M)
Current Limit Threshold
12V MOSFET
–12V MOSFET
12V
OUT
[A/B] = 0V
12MV
OUT
[A/B] = 0V
0.52
–0.11
1.0
–0.2
1.5
–0.3
A
A
I
THFAST
Fast-Trip Thresholds 12V
OUT
[A/B] (MIC2590B-2)
12MV
OUT
[A/B] (MIC2590B-2)
1.0
–0.20
2.15
–0.45
3.0
–0.6
A
A
I
AUX(THRESH)
Auxiliary Output Current Limit Threshold
Figure 4
Current which must be drawn
from V
AUX
to register as a fault
0.84 A
I
SC(TRAN)
Maximum Transient Short Circuit
Current
V
AUX
Enabled, then Grounded I
MAX
= V
STBY
/ R
DS(AUX)
A
