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DC to DC Converters
Distributed Power Supplies for Systems, Insulation Type
Quarter Brick Type iQB/iQC Series
Power supply systems for infrastructure devices used in communi-
cation networks primarily use brick-type DC to DC converters.
As the voltage used for LSIs continues to drop, power supplies are
expected to provide lower output, higher efficiencies, and lower
noise levels.
To meet these demands, we have developed quarter brick types
that is smaller in size and produce low output voltage.
FEATURES
• Wide input voltage range (DC.36 to 75V or DC.18 to 36V)
• There are 21 models in the lineup of products with low output
voltages (1.2 to 5V).
• High efficiency: 90%(3.3V and 5V output)
• Heat sink is not required.
• Remote ON-OFF function
• Output voltage external variable function
• Remote sensing function
• Various protective functions
• Two shapes: SMD and lead pin types
• Low height power supplies (Height: 8.1mm)
PRODUCT IDENTIFICATION
iQB
(1)
48 015A
(2)
(3)
018V
(4)
-
(5)
PART NUMBERS AND RATINGS
Output voltage(V)
Lead pin type
1.2
1.5
1.8
1.8
2.5
2.5
3.3
3.3
5
5
Supports 24V input
3.3
SMD type
1.2
1.5
1.8
1.8
2.5
2.5
3.3
3.3
5
5
Current(A)
25
25
15
25
10
20
10
20
8
15
15
25
25
15
25
10
20
10
20
8
15
Part No.
iQB48025A012V
iQB48025A015V
iQB48015A018V
iQB48025A018V
iQB48010A025V
iQB48020A025V
iQB48010A033V
iQB48020A033V
iQB48008A050V
iQB48015A050V
iQB24015A033V
iQC48025A012V
iQC48025A015V
iQC48015A018V
iQC48025A018V
iQC48010A025V
iQC48020A025V
iQC48010A033V
iQC48020A033V
iQC48008A050V
iQC48015A050V
(1) Type name
Quarter brick type
iQB: Lead pin
iQC: SMD
(2) Rated input voltage
(3) Output current
(4) Output voltage
(5) Option code
iQB type
015: Standard(Negative on/off logic, Pin length: 5.08mm,
Overvoltage protection shutdown type)
000: Positive on/off logic, Pin length: 3.68mm,
Overvoltage protection automatic recovery type
001: Negative on/off logic, Pin length: 3.68mm,
Overvoltage protection automatic recovery type
002: Positive on/off logic, Pin length: 2.79mm,
Overvoltage protection automatic recovery type
003: Negative on/off logic, Pin length: 2.79mm,
Overvoltage protection automatic recovery type
004: Positive on/off logic, Pin length: 5.08mm,
Overvoltage protection automatic recovery type
005: Negative on/off logic, Pin length: 5.08mm,
Overvoltage protection automatic recovery type
011: Negative on/off logic, Pin length: 3.68mm,
Overvoltage protection shutdown type
iQC type
001: Standard(Negative on/off logic)
000: Positive on/off logic
• All specifications are subject to change without notice.
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SPECIFICATIONS AND STANDARDS
Lead pin type
SMD
Rated output voltage and current
∗1
Maximum output power
W
Input conditions
Input voltage Edc
V
Input current
A
Inrush transient
∗2
A
2
S
Efficiency
%
Output characteristics
Output voltage Edc
V
Voltage adjustment range
%
Maximum output current
A
Minimum output current
A
Output voltage initial setting
%
Overvoltage protection
V
Overcurrent protection
A
Line regulation
mV
Load regulation
mV
Voltage
Temperature
stability
mV
regulation
Dynamic response mV
Ripple noise Ep-p
mV
Start up time
ms
Auxiliary functions
Overvoltage protection
Overcurrent protection
Alarm output
Over-temperature protection
Remote ON-OFF
Remote sensing
Parallel operation
Output voltage adjustment
Master slave operation
Standards
Safety standards
Constructions
External dimensions
mm
Weight
g
Mounting method
Oscillating method
Oscillating frequency
kHz
Part No.
∗1
∗2
iQB48025A012V
iQC48025A012V
1.2V • 25A
30
iQB48025A015V
iQC48025A015V
1.5V • 25A
37.5
iQB48015A018V
iQC48015A018V
1.8V • 15A
27
100ms]
4max.
0.2max.
85typ.
1.8
–10 to +10
15
1
±1.6max.
2.15 to 2.58
22.5typ.
5max.(2typ.)
7max.(1typ.)
50max.(10typ.)
iQB48025A018V
iQC48025A018V
1.8V • 25A
45
iQB48010A025V
iQC48010A025V
2.5V • 10A
25
iQB48020A025V
iQC48020A025V
2.5V • 20A
50
36 to 75[Continuation]/100[Transient
4max.
4max.
0.2max.
0.2max.
78typ.
82typ.
1.2
–10 to +10
25
2.5
±1.5max.
1.4 to 1.8
35.0typ.
5max.(2typ.)
7max.(1typ.)
50max.(10typ.)
1.5
–10 to +10
25
2
±2max.
1.7 to 2.3
35.0typ.
5max.(2typ.)
7max.(1typ.)
50max.(10typ.)
4max.
0.2max.
84typ.
1.8
–10 to +10
25
1.8
±1.6max.
2.15 to 2.58
35.0typ.
5max.(2typ.)
7max.(1typ.)
50max.(10typ.)
100max.
90typ.
2max.
0.2max.
87typ.
2.5
–10 to +10
10
0.75
±1.6max.
2.7 to 3.5
14.0typ.
5max.(1typ.)
7max.(1typ.)
50max.(10typ.)
100max.
90typ.
4max.
0.2max.
86typ.
2.5
–10 to +10
20
1.5
±1.6max.
2.7 to 3.5
26.0typ.
5max.(1typ.)
7max.(1typ.)
50max.(10typ.)
100max.
90typ.
±220typ.[50 to 75%, sudden load change]
75max.
100max.
100max.
90typ.
90typ.
90typ.
Yes(Shut-down type: Models capable of automatic output voltage recovery are available as an option.)
Yes(Automatic recovery)
No
Yes(Automatic recovery)
Yes
Yes
Impossible
Yes
No
UL60950 and VDE0805 approved. EN60950 approved.
8.1×36.8×57.9[H×W×L]
39typ.
Mounted from the terminal side (soldered).
Fixed frequency
300typ.
300typ.
300typ.
300typ.
300typ.
300typ.
Verify the rated current (maximum output current) because this involves derating.
Applies only to the primary surge. The power supply does not have an input fuse, so make sure to install an external fuse when using this product.
• All specifications are subject to change without notice.
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SPECIFICATIONS AND STANDARDS
Lead pin type
SMD
Rated output voltage and current
∗1
Maximum output power
W
Input conditions
Input voltage Edc
V
Input current
A
Inrush transient
∗2
A
2
S
Efficiency
%
Output characteristics
Output voltage Edc
V
Voltage adjustment range
%
Maximum output current
A
Minimum output current
A
Output voltage initial setting
%
Overvoltage protection
V
Overcurrent protection
A
Line regulation
mV
Load regulation
mV
Voltage
Temperature
stability
mV
regulation
Dynamic response mV
Ripple noise Ep-p
mV
Start up time
ms
Auxiliary functions
Overvoltage protection
Overcurrent protection
Alarm output
Over-temperature protection
Remote ON-OFF
Remote sensing
Parallel operation
Output voltage adjustment
Master slave operation
Standards
Safety standards
Constructions
External dimensions
mm
Weight
g
Mounting method
Oscillating method
Oscillating frequency
kHz
Part No.
∗1
∗2
iQB48010A033V
iQC48010A033V
3.3V • 10A
33
iQB48020A033V
iQC48020A033V
3.3V • 20A
66
iQB48008A050V
iQC48008A050V
5.0V • 8A
40
iQB48015A050V
iQC48015A050V
5.0V • 15A
75
iQB24015A033V
3.3V • 15A
49.5
18 to 36
4.25max.
0.2max.
89typ.
5
–10 to +10
15
1
±1.6max.
3.75 to 4.4
21.0typ.
10max.(2typ.)
10max.(1typ.)
75max.(30typ.)
100max.
90typ.
36 to 75[Continuation]/100[Transient 100ms]
2max.
4max.
2max.
0.2max.
0.2max.
0.2max.
90typ.
89typ.
90typ.
3.3
–10 to +10
10
0.75
±1.6max.
3.75 to 4.4
15.0typ.
5max.(1typ.)
7max.(1typ.)
60max.(15typ.)
3.3
–10 to +10
20
1.5
±1.6max.
3.75 to 4.4
27.0typ.
5max.(1typ.)
7max.(1typ.)
60max.(15typ.)
5
–10 to +10
8
0.6
±1.6max.
5.7 to 6.7
11.5typ.
10max.(2typ.)
10max.(1typ.)
75max.(30typ.)
125max.
90typ.
4max.
0.2max.
90typ.
5
–10 to +10
15
1
±1.6max.
5.7 to 6.7
23.0typ.
10max.(2typ.)
10max.(1typ.)
75max.(30typ.)
125max.
90typ.
±220typ.[50 to 75%, sudden load change]
100max.
100max.
90typ.
90typ.
Yes(Shut-down type: Models capable of automatic output voltage recovery are available as an option.)
Yes(Automatic recovery)
No
Yes(Automatic recovery)
Yes
Yes
Impossible
Yes
No
UL60950 and VDE0805 approved. EN60950 approved.
8.1×36.8×57.9[H×W×L]
39typ.
Mounted from the terminal side (soldered).
Fixed frequency
300typ.
300typ.
300typ.
300typ.
300typ.
Verify the rated current (maximum output current) because this involves derating.
Applies only to the primary surge. The power supply does not have an input fuse, so make sure to install an external fuse when using this product.
• All specifications are subject to change without notice.
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IQB TYPE
SHAPES AND DIMENSIONS
IQC TYPE
SHAPES AND DIMENSIONS
Bottom view
Bottom view
36.83±0.38
10.8
3.81
36.83±0.38
15.24
7.62
7.62
11.43
15.24
3.6
8.81max.
50.80
8.0
∗
1
57.91±0.38
57.91±0.38
8.4
∗
2
58.5
ø1.91
55.52
1.2
10.8
3.81
1
2
3
8
7
6
5
4
∗
1
Overall height after customer's reflow
∗
2
Overall height before customer's reflow
ø1.02 pins
ø2.03 stand-offs
3 pins
ø1.57 pins
ø2.59 stand-offs
2 pins
ø1.02 pins
ø2.03 stand-offs
3 pins
3.68
Top view
15.24
7.62
Top view
3.6
10.8
3.81
10.8
1.2
7.62
11.43
15.24
1
2
3
8
7
6
5
4
15.24
TERMINAL DESIGNATIONS AND FUNCTIONS
7.62
Top view
50.80
Dimensions in mm
3.81
7.62
7.62
55.52
15.24
11.43
11.43
TERMINAL DESIGNATIONS AND FUNCTIONS
1
2
3
4
5
6
7
8
+Vin
On/Off
–Vin
–Vout
–Sense
Trim
+Sense
+Vout
DC input terminal (+)
The output can be turned on/off externally.
DC input terminal (–)
DC output terminal (–)
Remote sensing terminal (–)
The output voltage can be varied by an external resistor.
Remote sensing terminal (+)
DC output terminal (+)
7.62
Dimensions in mm
1
2
3
4
5
6
7
8
+Vin
On/Off
–Vin
–Vout
–Sense
Trim
+Sense
+Vout
DC input terminal (+)
The output can be turned on/off externally.
DC input terminal (–)
DC output terminal (–)
Remote sensing terminal (–)
The output voltage can be varied by an external resistor.
Remote sensing terminal (+)
DC output terminal (+)
• All specifications are subject to change without notice.
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15.24
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OUTPUT POWER-AMBIENT TEMPERATURE (DERATING)
MAXIMUM OUTPUT CURRENT vs. AMBIENT TEMPERATURE(Ta)
iQB48025A012V/iQC48025A012V
iQB48025A015V/iQC48025A015V
Wind direction: Worst orientaion, Vin=48V
Wind direction: Worst orientaion, Vin=48V
(From 1 pin to 3 pin)
(From 1 pin to 3 pin)
30
30
25
Output current (A)
Output current (A)
25
20
20
15
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
35 45 55 65 75 85 95
Temperature (˚C)
15
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
35 45 55 65 75 85 95
Temperature (˚C)
10
10
5
25
105 115 125
5
25
105 115 125
iQB48015A018V/iQC48015A018V
Wind direction: Worst orientaion, Vin=48V
(From 1 pin to 3 pin)
17
15
Output current (A)
13
11
9
7
5
35
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
45
55
65
75
85
Temperature (˚C)
iQB48025A018V/iQC48025A018V
Wind direction: Worst orientaion, Vin=48V
(From 1 pin to 3 pin)
30
25
Output current (A)
20
15
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
35 45 55 65 75 85 95
Temperature (˚C)
10
95
105
115
5
25
105 115 125
iQB48010A025V/iQC48010A025V
Wind direction: Worst orientaion, Vin=48V
(From 1 pin to 3 pin)
11
10
9
Output current (A)
8
7
6
5
4
3
60
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
70
80
90
Temperature (˚C)
iQB48020A025V/iQC48020A025V
Wind direction: Worst orientaion, Vin=48V
(From output to input)
25
20
Output current (A)
15
NC
0.5m/s(100LFM)
1.0m/s(200LFM)
2.0m/s(400LFM)
3.0m/s(600LFM)
Tc, thermal limit
30 40 50 60 70 80 90 100 110 120
Ambient temperature (˚C)
10
100
110
5
20
• All specifications are subject to change without notice.
002-02 / 20040524 / ea33_br_iqbc.fm
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