QSB75/100

Models and Ratings

Notes

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

Input Voltage

Output Voltage

Output Current

Efficiency

No Load

Full Load

9-36 VDC

(24 V nominal)

3.3 V

12.00 A

50 mA

2.04 A

81.0%

QSB7524S3V3

5.0 V

12.00 A

50 mA

2.98 A

84.0%

QSB7524S05

12.0 V

6.25 A

50 mA

3.64 A

86.0%

QSB7524S12

15.0 V

5.00 A

50 mA

3.64 A

86.0%

QSB7524S15

24.0 V

3.12 A

50 mA

3.63 A

86.0%

QSB7524S24

18-75 VDC

(48 V nominal)

3.3 V

12.00 A

30 mA

1.10 A

82.0%

QSB7548S3V3

5.0 V

12.00 A

30 mA

1.47 A

85.0%

QSB7548S05

12.0 V

6.25 A

30 mA

1.82 A

86.0%

QSB7548S12

15.0 V

5.00 A

30 mA

1.80 A

87.0%

QSB7548S15

24.0 V

3.12 A

30 mA

1.80 A

87.0%

QSB7548S24

9-36 VDC

(24 V nominal)

3.3 V

30.00 A

120 mA

4.80 A

86.0%

QSB10024S3V3

5.0 V

20.00 A

120 mA

4.82 A

86.5%

QSB10024S05

12.0 V

8.30 A

80 mA

4.80 A

86.5%

QSB10024S12

15.0 V

6.70 A

80 mA

4.84 A

86.5%

QSB10024S15

24.0 V

4.17 A

80 mA

4.79 A

87.0%

QSB10024S24

18-75 VDC

(48 V nominal)

3.3 V

30.00 A

60 mA

2.37 A

88.0%

QSB10048S3V3

5.0 V

20.00 A

60 mA

2.37 A

88.0%

QSB10048S05

12.0 V

8.30 A

30 mA

2.36 A

88.0%

QSB10048S12

15.0 V

6.70 A

30 mA

2.38 A

88.0%

QSB10048S15

24.0 V

4.17 A

30 mA

2.37 A

88.0%

QSB10048S24

1.03

(26.2)

1.45

(36.8)

2.00 (50.80)

1

0.60

(15.24)

0.50

(12.70)

0.16

(4.1) min.

ø 0.040

(1.02)

Pins 1,2,3,5,6,7

ø 0.059

(1.50)

Pins 4,8

3

2

4

6

7

8

5

2.28 (57.90)

1.14 (28.96)

0.73

(18.42)

0.60

(15.24)

Mounting hole diameter:

0.126 (3.2) clearance hole

0.30

(7.62)

1.86 (47.20)

BOTTOM VIEW

PIN CONNECTIONS

Pin

Function

1

+Vin

2

Remote On/Off

3

-Vin

4

-Vout

5

-Sense

6

Trim

7

+Sense

8

+Vout

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

Air Flow Rate

Natural Convection

20 ft. / min (0.1 ms)

10.1 °C/W

100 ft./min (0.5 ms)

8.0 °C/W

200 ft./min (1.0 ms)

5.4 °C/W

300 ft./min (1.5 ms)

4.4 °C/W

400 ft./min (2.0 ms)

3.4 °C/W

Thermal Resistance Information

Maximum Power Dissipation vs Ambient Temperature and Air Flow without heatsink

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

0

10

20

30

40

50

60

70

80

90

100

Ambient Temperature ,Ta (ºC)

Natural Convection

20 ft./min. (0.1 m/s)

100 ft./min. (0.5 m/s)

200 ft./min. (1.0 m/s)

300 ft./min. (1.5 m/s)

400 ft./min. (2.0 m/s)

Derating Curve