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REVISION: March 23, 2010 V20
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25
℃
Unless Otherwise Noted
INPUT SPECIFICATIONS:
Input Voltage Range ....…………….................……... 48V .............. 36 – 75V
Input Surge Voltage (100ms max.) ………………....… 48V …..... 100Vdc max.
Under voltage lockout ……………….………... power up ….….…. 35V typ.
power down ……….. 33V typ.
Input Filter ………………………………..…………….………….……… PI Type
Positive Logic Remote on/off Control (see Note4 &5)
GENERAL SPECIFICATIONS:
Efficiency ...................................………..………………............ See Table
Isolation Voltage ....................................…..….……......... 1500 VDC min.
7
Isolation Resistance ....................…….…..........….……… 10 Ohms min.
Isolation Capacitance …………..……..………………….… 1000pF typ.
Switching Frequency .............................……....................... 250KHz typ.
5V/12Vout ………………..…….. 300KHz typ.
Over Temperature Protection …………………………………. 120
℃
typ.
Operating Ambient Temperature Range ...…..…...…….... -40
℃
to +85
℃
Power De-rating Curve ………………………… refer to Application Note
Storage Temperature Range ...…............…….....…....... -40
℃
to +125
℃
Dimensions ................. 2.30 x 1.45 x 0.42 inches(58.4 x 36.8 x 10.6 mm)
Weight …………………………………………………………………… 40g
OUTPUT SPECIFICATIONS:
Voltage Accuracy ………………....……………….......…………… ±1.0% max.
Transient Response: 25% Step Load Change ..........................………. <500us
Ripple and Noise, 20MHz BW …….......………………….…. 100mV p-p max.
5V/12Vout ……….……. 120mVp-p max.
Temperature Coefficient ..................….…………...…..……….. ±0.03%/C max.
Short Circuit Protection...................…....…………………….Continuous/hiccup
Line Regulation, Note1 ..….……...……………………...…………. ±0.2% max.
Load Regulation, Note2 ……………….........………….………….. ±0.5% max.
Over Voltage Protection Trip Range, %Vo nom. ……………….. 115%-140%
External Trim Adj. Range, Note6 ……….……………….…..…………… ±10%
Current Limit ……………………………………. 110% - 150% Nominal Output
Start up time ………………………………………………….….…… 150ms typ.
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
SIZE QB Dimensions :
章 節
2.30
(58.4)
2.000
(50.80)
QB-5
1-2
頁 次
1.45 0.600
(36.8) (15.24)
0.300
(7.62)
0.600
(15.24)
0.
(10.6)
Typical Derating Curve for CQB125-48S3V3
35
0.145
(3.68)
30
Outpu t Curren t (A)
0.040 (1.02)
0.062 (1.57)
25
20
20LFM
15
10
5
0
25
100LFM
200LFM
300LFM
EXTERNAL OUTPUT TRIM
+SENSE
TRIM UP
+SENSE
TRIM
TRIM DOWN
TRIM
10K Ohms
TRIMPOT
-SENSE
-SENSE
2
35
45
55
65
75
85
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