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MIC2590B_08 Datasheet, PDF (8/23 Pages) Micrel Semiconductor – Dual-Slot PCI Hot Plug Controller
◁
Micrel, Inc.
MIC2590B
Symbol
ILIM(AUX)
Parameter
Regulated Current after Transient
RDISCH
R(12V)
R(12MV)
R(3V)
R(5V)
R(3VAUX)
tOFF(3)
tOFF(5)
Output Discharge Resistance
12VOUT[A/B]
12MVOUT[A/B]
3VOUT[A/B]
5VOUT[A/B]
3VAUX[A/B]
Current Limit Response Time for 3.3V
and 5V Outputs, Figure 2
TSC(TRAN)
VAUX Current Limiter Response Time,
Figure 5
tOFF(12)
12V Current Limit Response Time,
Figure 3
tOFF(12M)
–12V Current Limit Response Time,
Figure 3
TPROP(3VFAULT) Delay from 3V[A/B] overcurrent-limit to
FAULT Output
TPROP(5VFAULT) Delay from 5V[A/B] overcurrent-limit to
FAULT Output
tW
ON[A/B], AUXEN[A/B] Pulse Width
tPOR
MIC2590B Power-On Reset Time after
VSTBY becomes valid
8-Bit Analog to Digital Converter
Total Unadjusted Error Voltage,
All Outputs
Current, 3VOUT[A/B]/5VOUT [A/B]
Current, VAUX[A/B], 12VOUT[A/B],
12MVOUT [A/B]
tCONV
Conversion Time
Resolution Specifications:
VAUXA
VAUXB
Full Scale Voltage
LSB of Voltage
Full Scale Current
LSB of Current
3VOUTA
3VOUTB
Full Scale Voltage
LSB of Voltage
Full Scale Current
LSB of Current
5VOUTA
5VOUTB
Full Scale Voltage
LSB of Voltage
Full Scale Current
LSB of Current
Condition
From end of ISC(TRAN) to CFILTER
Time Out
12VOUT[A/B] = 6.0V
12MVOUT[A/B] = –6.0V
3VOUT[A/B] = 1.65V
5MVOUT[A/B] = 2.5V
5VOUT[A/B] = 1.65V
MIC2590B-2 with CGATE = 10nF,
VIN – VSENSE = 200mV
VAUX[A/B] = 0V, Note 5
12VOUT[A/B] = 0V, Note 5
12MVOUT[A/B] = 0V, Note 5
MIC2590B-2, VSENSE – VTHLIMIT =
200mV, CFILTER = open
MIC2590B-2, VSENSE – VTHLIMIT =
200mV, CFILTER = open
Note 5
Note 5
Measured as voltage across
corresponding external RSENSE
External RSENSE = 6.00mΩ
External RSENSE = 6.00mΩ
Min
0.375
–3
–3
Typ
Max Units
0.7
1.35
A
1600
Ω
600
Ω
150
Ω
150
Ω
430
Ω
1
µs
33
µs
1
µs
1
µs
1
µs
1
µs
100
ns
500
µs
+3
%
+3
%
±3
%
60
100
ms
3.85
V
15.1
mV
375
mA
1.47
mA
3.85
V
15.1
mV
11.6
A
45.5
mA
5.89
V
23.1
mV
6.96
A
27.3
mA
September 2008
8
M9999-091808
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