QSB75/100
Models and Ratings
Input Current(4)
Input Voltage
Output Voltage
Output Current
Efficiency
Model Number(3)
No Load
50 mA
50 mA
50 mA
50 mA
50 mA
30 mA
30 mA
30 mA
30 mA
30 mA
120 mA
120 mA
80 mA
80 mA
80 mA
60 mA
60 mA
30 mA
30 mA
30 mA
Full Load
2.04 A
2.98 A
3.64 A
3.64 A
3.63 A
1.10 A
1.47 A
1.82 A
1.80 A
1.80 A
4.80 A
4.82 A
4.80 A
4.84 A
4.79 A
2.37 A
2.37 A
2.36 A
2.38 A
2.37 A
3.3 V
5.0 V
12.00 A
12.00 A
6.25 A
5.00 A
3.12 A
12.00 A
12.00 A
6.25 A
5.00 A
3.12 A
30.00 A
20.00 A
8.30 A
6.70 A
4.17 A
30.00 A
20.00 A
8.30 A
6.70 A
4.17 A
81.0%
84.0%
86.0%
86.0%
86.0%
82.0%
85.0%
86.0%
87.0%
87.0%
86.0%
86.5%
86.5%
86.5%
87.0%
88.0%
88.0%
88.0%
88.0%
88.0%
QSB7524S3V3
QSB7524S05
QSB7524S12
QSB7524S15
QSB7524S24
QSB7548S3V3
QSB7548S05
QSB7548S12
QSB7548S15
QSB7548S24
QSB10024S3V3
QSB10024S05
QSB10024S12
QSB10024S15
QSB10024S24
QSB10048S3V3
QSB10048S05
QSB10048S12
QSB10048S15
QSB10048S24
9-36 VDC
(24 V nominal)
12.0 V
15.0 V
24.0 V
3.3 V
5.0 V
18-75 VDC
(48 V nominal)
12.0 V
15.0 V
24.0 V
3.3 V
5.0 V
9-36 VDC
(24 V nominal)
12.0 V
15.0 V
24.0 V
3.3 V
5.0 V
18-75 VDC
(48 V nominal)
12.0 V
15.0 V
24.0 V
Notes
1. Ripple & noise is measured with a 10 µF tantalum capacitor and 1.0 µF
ceramic capacitor across output.
2. Logic compatibility: Ref to -ve input. Module On = open circuit.
Module Off = <0.8 VDC.
3. Add suffix ‘N’ to the model number to receive the unit with negative logic
Remote On/Off.
4. Input current specified at 24 V for 9-36 VDC and 48 V for 18-75 VDC models.
Mechanical Details
2.28 (57.90)
2.00 (50.80)
1.14 (28.96)
PIN CONNECTIONS
Mounting hole diameter:
0.126 (3.2) clearance hole
Pin
1
Function
+Vin
0.60
1.45
(15.24)
(36.8)
2
3
4
5
6
7
8
Remote On/Off
-Vin
3
2
1
4
5
6
7
8
1.03
(26.2)
0.60
BOTTOM VIEW
1.86 (47.20)
(15.24)
-Vout
-Sense
Trim
+Sense
+Vout
0.73
(18.42)
0.30
(7.62)
ø 0.040
ø 0.059
(1.50)
Pins 4,8
Notes
(1.02)
1. Dimensions are in inches (mm)
2. Tolerances: X.XX 0.02 (X.X = 0.5)
X.XXX = 0.01 (X.XX = 0.25)
3. Weight: 0.15 lbs (66 g) approx
0.16
(4.1) min.
Pins 1,2,3,5,6,7
=
0.50
(12.70)
Thermal Resistance Information
Derating Curve
Maximum Power Dissipation vs Ambient Temperature and Air Flow without heatsink
30
28
26
24
22
20
18
16
14
12
10
8
Natural Convection
20 ft./min. (0.1 m/s)
Typical Rca
Air Flow Rate
100 ft./min. (0.5 m/s)
Natural Convection
20 ft. / min (0.1 ms)
10.1 °C/W
200 ft./min. (1.0 m/s)
300 ft./min. (1.5 m/s)
400 ft./min. (2.0 m/s)
100 ft./min (0.5 ms)
200 ft./min (1.0 ms)
300 ft./min (1.5 ms)
400 ft./min (2.0 ms)
8.0 °C/W
5.4 °C/W
4.4 °C/W
3.4 °C/W
6
4
Rca = Thermal resistance case to ambient
2
0
0
10
20
30
40
50
60
70
80
90
100
Ambient Temperature ,Ta (ºC)