MSK MSK5041-1.9, MSK5041-2.5, MSK5041-3.3, MSK5041-3.3E, MSK5041-3.3H Datasheet
...
4707 Dey Road Liverpool, N.Y. 13088
M.S.KENNEDY CORP.
(315) 701-6751
FEATURES:
5041
SERIES
ISO-9001 CERTIFIED BY DSCC
HIGH EFFICIENCY,
8 AMP 1% ACCURATE
SURFACE MOUNT
SWITCHING REGULATORS
Up To 95% Efficiency For 5V Version
8 Amp Output Current
4.5V to 30V Input Range
Preset 1.9V, 2.5V, 3.3V or 5.0V Output Versions
300KHz Switching Frequency @ 1 Amp and above
User Programmable Soft-Start
Quiescent Current < 2.5mA
User Programmable Current Limit
DESCRIPTION:
EQUIVALENT SCHEMATIC
The MSK 5041 series are high efficiency, 8 amp, surface mount switching regulators. The output voltage is
configured for 1.9V, 2.5V, 3.3V or 5.0V internally with a tolerance of 1% at 3 amps. The operating frequency of the
MSK 5041 is 300KHz and is internally set. An external "soft start" capacitor allows the user to control how quickly
the output comes up to regulation voltage after the application of an input. An extremely low quiescent current of
typically less than 2.5mA and nearly 95% operating efficiency keep the total internal power dissipation of the MSK
5041 down to an absolute minimum.
MIL-PRF-38534 QUALIFIED
TYPICAL APPLICATIONS
PIN-OUT INFORMATION
Step-down Switching Regulator
Microprocessor Power Source
High Efficiency Low Voltage
Subsystem Power Supply
Case
Sense High
Sense Low
N/C
RF High
N/C
N/C
1
2
3
4
5
6
7
34-44
23-33
11-22
10
9
8
Vout
Ground
Vin
Enable
N/C
Cton
PRELIMINARY Rev. - 6/011
Within SOA
1.0A≤IOUT≤8.0A
IOUT=3.0A 6V≤VIN≤20V
Internal IOUT≥1.5A
High
Low
VEN=VIN
VEN=0V
VEN=0V VIN=30V
Positive
Negative
Source
Fault Sink
VIN=5.0V IOUT=3.0A
VIN=5.0V IOUT=3.0A
VIN=5.0V IOUT=3.0A
VIN=6V IOUT=3.0A
Enable Input Voltage
Enable Input Current
Current Limit Threshold
Cton Current
Efficiency
8
5041-1.9
5041-2.5
5041-3.3
5041-5.0
V
V
V
V
V
V
V
V
V
A
%
%/V
KHz
V
V
µA
µA
mA
mV
mV
µA
mA
%
%
%
%
TST
TLD
TC
TJ
Storage Temperature Range
Lead Temperature Range
(10 Seconds)
Case Operating Temperature
MSK5041 Series
MSK5041H/E Series
Junction Temperature
ABSOLUTE MAXIMUM RATINGS
○○○○○○○○○○
○○
○○○○○○○○
○○○○○○
-65°C to +150°C
300°C
-40°C to +85°C
-55°C to +125°C
+150°C
Input Voltage
Enable Voltage
Output Current
Sense Pin Voltage
Thermal Resistance
(Each MOSFET)
-0.3V, +36V
-0.3V, +36V
9.0 Amps
-0.3V, +7V
12°C/W
○○○○○○○○○○
○○○○○○○○○○○○
○○○○○○○○○○○
○○○○○○○○○
○○○○○○○○○○○
1,2,3
1
2,3
1
2,3
1
2,3
1
2,3
1
-
1,2,3
-
1,2,3
1,2,3
1
1
1
1
1
1
1
1
1
1
1
Input Supply Range
Output Current
Load Regulation
Line Regulation
Oscillator Frequency
Disabled Quiescent Current
-
1.9
-
2.5
-
3.3
-
5.0
-
9.0
TBD
0.06
300
-
-
0.5
0.2
2.0
100
-100
4.0
-
70
80
90
95
ELECTRICAL SPECIFICATIONS
4.75
1.88
TBD
2.47
TBD
3.27
TBD
4.95
TBD
8.0
-
-
270
2.0
-
-
-
-
80
-50
2.5
2.0
-
-
-
-
-
1.9
1.9
2.5
2.5
3.3
3.3
5.0
5.0
9.0
TBD
0.06
300
-
-
0.5
0.2
2.0
100
-100
4.0
-
70
80
90
95
30
1.92
TBD
2.53
TBD
3.33
TBD
5.05
TBD
-
-
0.10
330
-
0.5
2.0
2.0
2.5
120
-160
6.5
-
-
-
-
-
4.75
1.86
-
2.45
-
3.23
-
4.9
-
8.0
-
-
270
2.0
-
-
-
-
75
-45
2.5
2.0
-
-
-
-
30
1.94
-
2.55
-
3.37
-
5.1
-
-
-
0.12
330
-
0.5
2.0
2.0
2.5
125
-165
6.5
-
-
-
-
-
Group A
Subgroup
Min. Typ.
Max.
Min.
Typ.
Max.
MSK 5041 SERIES
MSK 5041H SERIES
Units
Test Conditions
Parameter
1
2
2
2
2
2
2
2
7
1
2
3
4
5
6
7
8
VIN=Enable, 5mV≤(sense high-sense low)≤25mV, IL=0A, COUT=10x330µF, CIN=10x220µF, CTON=0.01µF unless otherwise specified.
This parameter is guaranteed by design but need not be tested. Typical parameters are representative of actual device performance but are for reference only.
All output parameters are tested using a low duty cycle pulse to maintain TJ = TC.
Industrial grade and 'E' suffix devices shall be tested to subgroup 1 unless otherwise specified.
Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2 and 3.
Subgroup 1
Subgroup 2
Subgroup 3
Actual switching frequency can be load dependent if output current is low. Refer to typical performance curves.
Alternate output voltages are available. Please contact the factory.
TA=TC=+25°C
TA=TC=+125°C
TA=TC=-55°C
NOTES:
PRELIMINARY Rev. - 6/01
2
8
2
○○○○○○○○○○○○○
8
8
Output Voltage 5041-1.9
Output Voltage 5041-2.5
Output Voltage 5041-3.3
Output Voltage 5041-5.0
IOUT=3.0A VIN=5.0V
IOUT=3.0A VIN=5.0V
IOUT=3.0A VIN=5.0V
IOUT=3.0A VIN=6V
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