All Specifications Typical At Nominal Line, Full Load and 25˚C Unless Otherwise Noted.
0.600
2.000
(7.62) (15.24)
(50.80)
(15.24)
(58.4)
(36.8)
1.45
BOTTOM VIEW
1
4
2
3
5
6
7
8
(10.6)
(1.57)
(1.02)
(3.68)
SIDE VIEW
0.300 0.600
0.062
0.040
0.42
0.145
2.30
SIZE EB
All Specifications Typical At Nominal Line, Full Load and 25˚C Unless Otherwise Noted.
Specifications
INPUT SPECIFICATIONS:
Input Voltage Range....………................48V……….........................36 – 75V
Under voltage lockout ……..…............. power up .........................35V typ.
power down …............... 33V typ.
Positive Logic Remote on/off Control (see Note4 & 5)
Input Filter ...........…..……………….………...........................................PI Type
OUTPUT SPECIFICATIONS:
Voltage Accuracy…………………...……………...........................±1.0% max.
Transient Response :25% Step Load Change..............................<500u sec.
Ripple and Noise, 20MHz BW …….......…………................100mV p-p max.
5V / 12Vout…......................120mV p-p max.
Temperature Coefficient....................….…………….............±0.03%/C max.
Short Circuit Protection...................…......……............Continuous / Hiccup
Line Regulation1..….………...………………..................................±.0.2% max.
Load Regulation2………………….........………..............................±0.5% max.
Over Voltage Protection Trip Range, %Vo nom………..............115%-140%
External Trim Adj. Range6……………….…………..............….................±10%
Current Limit………………………................... 110% - 150% Nominal Output
GENERAL SPECIFICATIONS:
Efficiency...........................................………..…………....................See Table
Isolation Voltage...................................……..………...............1500 VDC min.
Isolation Resistance .....................…….………….……….........107 Ohms min.
Switching Frequency .............................……..............................200KHz typ.
3.3V/2.5Vout..……..............................250KHz typ.
5V/12Vout..…….............................300KHz typ.
Over Temperature Protection .....……...........................................120˚C typ.
Operating Ambient Temperature Range...…..…...…......... -40˚C to +85˚C
Power Derating Curve........................................Refer to Application Note.
Storage Temperature Range ...…............…….....…........... -40˚C to +125˚C
Dimensions.........................……......………………... 2.30 x 1.45 x 0.42 inches
(58.4 x 36.8 x 10.6 mm)
Weight.........................................................................................................40g
NOTE:
1. Measured From High Line to Low Line
2. Measured From Full Load to Zero Load
3. The output ripple and noise is measured with 10uF tantalum and 1uF
Ceramic capacitor across output.
4. Logic Compatibility ……………... Open Collector ref to -Input
Module ON ………. Open Circuit
Module OFF ……….. < 1.2Vdc
5. Suffix "N" to the Model Number with Negative Logic Remote ON/OFF
Module ON ………. < 1.2Vdc
Module OFF ……….. Open Circuit
6. Trim-up.................Connect a Resistor Between the Trim Pin and+Sense
Trim-Down.............Connect a Resistor Between the Trim Pin and-Sense
Typical Derating Curve for CQB125-48S3V3
Ambient Temperature(˚C)
Output Current (A)
5
10
15
20
25
30
35
25 30 35 40 45 50 55 60 65 70 75 80
20LFM
100LFM
200LFM
300LFM
CQB125
All Dimensions In Inches(mm)
Tolerance Inches: x.xx= ±0.02, x.xxx= ±0.010
Millimeters: x.x= ±0.5, x.xx= ±0.25
PIN CONNECTION
Pin Function
1
2
3
4
5
6
7
8
+V Input
ON/OFF
-V Input
-V Output
-Sense
Trim
+Sense
+Vout
CQB125
40-125 WATT 1/4 BRICK
DC-DC CONVERTERS
S E R I E S
MODEL
NUMBER
CQB125-48S1V0
CQB125-48S1V2
CQB125-48S1V5
CQB125-48S1V8
CQB125-48S2V5
CQB125-48S3V3
CQB125-48S05
CQB125-48S12
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
36-75 VDC
1.0 VDC
1.2 VDC
1.5 VDC
1.8 VDC
2.5 VDC
3.3 VDC
5.0 VDC
12 VDC
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
0 mA
40A
40A
40A
40A
40A
35A
25A
10A
60 mA
60 mA
60 mA
60 mA
80 mA
80 mA
100 mA
100 mA
1016mA
1190mA
1453mA
1724mA
2341mA
2673mA
2861mA
2717mA
82
84
86
87
89
90
91
92
Quarter-Brick
Quarter-Brick
Quarter-Brick
Quarter-Brick
Quarter-Brick
Quarter-Brick
Quarter-Brick
Quarter-Brick
% EFF. SIZE
INPUT
VOLTAGE
OUTPUT CURRENT INPUT CURRENT
NO LOAD FULL LOAD
MIN. MAX.
OUTPUT
VOLTAGE
NOTE: 1. Nominal Input Voltage 48 VDC
.070(1.78)
.040(1.02)
.150(3.81)
.91(23.0)
HIGH SIGNAL HERE
DISABLE OUTPUT
ON/OFF (2)
-VIN (4) -SENSE
TRIM UP
TRIM
TRIM DOWN
+SENSE
-SENSE
+SENSE
TRIM 10K ohms
TRIMPOT
2.40
(61.00)
Ø0.08
(2.03)
2pl.
0.50
(12.70)
SIDE VIEW
0.18 min.
(4.60) 2*R1.50
Mounting Inserts
M3*0.5 Through 4pl.
2.00
(50.80)
1.40
(35.56) 0.60
(15.24)
4
3
2
1
5
6
7
8
9
1.90
(48.25)
2.28
(57.90)
BOTTOM VIEW
Ø0.04
(1.02)
7pl.
External Output Trim
• 40-125W Isolated Output
• Quarter Brick Package
• Regulated Outputs
• Efficiency to 92%
• 1500VDC Isolation
Features
• Input Under Voltage Protection
• Over Current Protection
• Over Temperature Protection
• Remote On/Off Control