參數(shù)資料
型號： MIC2591B-5YTQ
廠商： MICREL INC
元件分類： 電源管理
英文描述： 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝： LEAD FREE, TQFP-48
文件頁數(shù)： 33/34頁
文件大?。?/td> 1920K
代理商： MIC2591B-5YTQ
MIC2591B
Micrel
March 2005
8
M9999-033105
Electrical Characteristics (continued)(5)
Symbol
Parameter
Condition
Min
Typ
Max
Units
CFILTER Overcurrent DelayTime, Pin 20 grounded through RFILTER[A&B] = 110 kΩ, 1%
SF
CFILTER Overcurrent Delay
V12VIN – V12VSENSE > VTHILIMIT
THILIMIT
Scaling Factor
and/or
4.4
5
5.6
Delay(ms) = CFILTER(F)
V3VIN –V3VSENSE > VTHILIMIT
×
RFILTER(kΩ) × SF
VTHILIMIT
Current Limit Threshold Voltages
THILIMIT
12V[A/B] supplies
V12VIN – V12VSENSE
45
50
55
mV
3.3V[A/B] supplies
V3VIN – V3VSENSE
45
50
55
mV
VTHFAST
12VOUT[A/B] and 3VOUT[A/B]
V
THFAST
12VIN – V12VSENSE
MIC2591B-2BTQ
90
100
110
mV
Fast-Trip Threshold Voltages
V3VIN – V3VSENSE
MIC2591B-3BTQ
135
150
165
mV
MIC2591B-5BTQ
Disabled
I12VSENSE[A/B] 12VSENSE[A/B] Input current
0.35
A
I3VSENSE[A/B]
3VSENSE[A/B] Input current
0.35
A
VIL
LOW-Level Input Voltage
IL
–0.5
0.8
V
ON[A/B], AUXEN[A/B], GPI_[A0/B0],
/FORCE_ON[A/B]
VOL
Output LOW Voltage
I
OL
OL = 3mA
OL
0.4
V
/FAULT[A/B], /PWRGD[A/B],
/INT, SDA
VIH
HIGH-Level Input Voltage
2.1
3.6
V
ON[A/B], AUXEN[A/B], GPI_[A0/B0],
/FORCE_ON[A/B], A[0-2], SCL, SDA
RPULLUP(A0 -A2) Internal Pull-ups from A[0-2]
40
kΩ
to VSTBY[A/B]
ILKG,OFF(12VIN[A/B]) 12VIN[A/B] Input leakage current
VSTBY = VSTBY[A/B] = +3.3V,
1
A
STBY
12VIN[A/B] = OFF; 3VIN[A/B] = OFF
LKG,OFF(
LKG,OFF(12VIN[A/B])
12VIN[A/B])
ILKG,OFF(3VIN[A/B]) 3VIN[A/B] Input leakage current
VSTBY = VSTBY[A/B] = +3.3V,
1
A
STBY
3VIN[A/B] = OFF; 12VIN[A/B] = OFF
LKG,OFF(
LKG,OFF(3VIN[A/B])
3VIN[A/B])
IIL
Input Leakage Current
IL
±5
A
SCL, ON[A/B], AUXEN[A/B],
/FORCE_ON[A/B]
ILKG(OFF)
Off-State Leakage Current
GPI_[A0/B0]: ILKG for these two pins
±5
A
/FAULT[A/B], /PWRGD[A/B],
measured with V
LKG(OFF)
AUX
/FAULT[A/B], /PWRGD[A/B],
measured with V
/FAULT[A/B], /PWRGD[A/B],
measured with V
OFF
/INT, SDA, GPI_[A0/B0]
TOV
Overtemperature Shutdown and Reset
TJ increasing, each slot(6)
(6)
140
°C
Thresholds, with overcurrent on slot
TJ decreasing, each slot(6)
130
°C
Overtemperature Shutdown and
TJ increasing, both slots(6)
(6)
160
°C
Reset Thresholds, all other conditions
TJ decreasing, both slots(6)
150
°C
(all outputs will latch OFF)
RDS(AUX)
Output MOSFET Resistance
IDS = 375mA, TJ = 125°C
400
mΩ
VAUX[A/B] MOSFET
VOFF(VAUX)
Off-State Output Offset Voltage
VAUX[A/B]
Off-State Output Offset Voltage
V
Off-State Output Offset Voltage
V
= Off, TJ = 125°C
50
mV
VAUX[A/B]
V
Notes:
5.
Specication for packaged product only.
6.
Parameters guaranteed by design. Not 100% production tested.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
SF
C
Scaling Factor
and/or
Delay(ms) = C
Current Limit Threshold Voltages
12V[A/B] supplies
3.3V[A/B] supplies
V
12VOUT[A/B] and 3VOUT[A/B]
V
Fast-Trip Threshold Voltages
V
MIC2591B-5BTQ
Disabled
LOW-Level Input Voltage
ON[A/B], AUXEN[A/B], GPI_[A0/B0],
/FORCE_ON[A/B]
Output LOW Voltage
I
/FAULT[A/B], /PWRGD[A/B],
/INT, SDA
HIGH-Level Input Voltage
ON[A/B], AUXEN[A/B], GPI_[A0/B0],
/FORCE_ON[A/B], A[0-2], SCL, SDA
to V
12VIN[A/B] = OFF; 3VIN[A/B] = OFF
3VIN[A/B] = OFF; 12VIN[A/B] = OFF
Input Leakage Current
SCL, ON[A/B], AUXEN[A/B],
/FORCE_ON[A/B]
Off-State Leakage Current
GPI_[A0/B0]: I
/FAULT[A/B], /PWRGD[A/B],
measured with V
/INT, SDA, GPI_[A0/B0]
Thresholds, with overcurrent on slot
T
Overtemperature Shutdown and
T
(all outputs will latch OFF)
Output MOSFET Resistance
I
VAUX[A/B] MOSFET
Off-State Output Offset Voltage
V
Overcurrent Delay
V
Scaling Factor
and/or
(F)
V
3.3V[A/B] supplies
V
12VOUT[A/B] and 3VOUT[A/B]
V
Fast-Trip Threshold Voltages
V
MIC2591B-5BTQ
Disabled
12VSENSE[A/B] Input current
0.35
A
3VSENSE[A/B] Input current
0.35
A
LOW-Level Input Voltage
Output LOW Voltage
I
HIGH-Level Input Voltage
ON[A/B], AUXEN[A/B], GPI_[A0/B0],
Internal Pull-ups from A[0-2]
40
kΩ
12VIN[A/B] Input leakage current
V
12VIN[A/B] = OFF; 3VIN[A/B] = OFF
3VIN[A/B] Input leakage current
V
3VIN[A/B] = OFF; 12VIN[A/B] = OFF
Input Leakage Current
Off-State Leakage Current
GPI_[A0/B0]: I
/FAULT[A/B], /PWRGD[A/B],
measured with V
/INT, SDA, GPI_[A0/B0]
T
Thresholds, with overcurrent on slot
T
Overtemperature Shutdown and
T
Output MOSFET Resistance
I
Off-State Output Offset Voltage
V
MIC2591B-5BTQ
Disabled
12VSENSE[A/B] Input current
0.35
A
3VSENSE[A/B] Input current
0.35
A
= 3mA
Internal Pull-ups from A[0-2]
40
kΩ
= VSTBY[A/B] = +3.3V,
1
A
12VIN[A/B] = OFF; 3VIN[A/B] = OFF
= VSTBY[A/B] = +3.3V,
1
A
3VIN[A/B] = OFF; 12VIN[A/B] = OFF
Input Leakage Current
for these two pins
140
°C
130
°C
160
°C
150
°C
= 125°C
5
50
100
150
MIC2591B-5BTQ
Disabled
12VSENSE[A/B] Input current
0.35
A
3VSENSE[A/B] Input current
0.35
A
= 3mA
Internal Pull-ups from A[0-2]
40
kΩ
= VSTBY[A/B] = +3.3V,
1
A
12VIN[A/B] = OFF; 3VIN[A/B] = OFF
= VSTBY[A/B] = +3.3V,
1
A
3VIN[A/B] = OFF; 12VIN[A/B] = OFF
Input Leakage Current
for these two pins
140
°C
130
°C
160
°C
150
°C
= 125°C
MIC2591B-5BTQ
Disabled
12VSENSE[A/B] Input current
0.35
A
3VSENSE[A/B] Input current
0.35
A
Internal Pull-ups from A[0-2]
40
kΩ
= VSTBY[A/B] = +3.3V,
1
A
= VSTBY[A/B] = +3.3V,
1
A
140
°C
130
°C
160
°C
150
°C
mV
12VSENSE[A/B] Input current
0.35
A
3VSENSE[A/B] Input current
0.35
A
V
Internal Pull-ups from A[0-2]
40
kΩ
= VSTBY[A/B] = +3.3V,
1
A
= VSTBY[A/B] = +3.3V,
1
A
140
°C
130
°C
160
°C
150
°C
mΩ
mV
MIC2591B-2BTQ
MIC2591B-3BTQ
MIC2591B-5BTQ
Disabled
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