V21
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25
℃
Unless Otherwise Noted
INPUT SPECIFICATIONS:
Input Voltage Range....……………...............…………. 24V ................18 - 36V
48V ……….... 36 - 75V
Input Surge Voltage (100ms max.) …………..….… 24V …... 50Vdc max.
48V ....... 100Vdc max.
Under Voltage Lockout ………..…. 24Vin power up ….…....…..……. 17V
24Vin power down …..….…………. 16V
48Vin power up …………...….……. 34V
48Vin power down ………………. 32.5V
Input Filter ………………………………..………………………. Capacitive Type
Positive Logic Remote on/off Control:
Logic Compatibility ……..….………….. CMOS or Open Collector TTL
Module ON ………….…....…….. >+5.5VDC to 75Vdc or Open Circuit
Module OFF …..………………………………………..………. <1.2VDC
GENERAL SPECIFICATIONS:
Efficiency ..........................................………..…………............ See Table
Isolation Voltage ..................................……..………........ 2250 VDC min.
7
Isolation Resistance ...........................….…….…….…..… 10 ohm min.
Isolation Capacitance ………………..……………………..…… 560pF typ.
Switching Frequency ............................……......................... 400KHz typ.
Operating Ambient Temperature Range ...…..……...….... -40
℃
to +85
℃
Derating, Above 71
℃
……………..…. Linearly to Zero Power at +100
℃
Cooling ………………………………………………… Natural Convection
Storage Temperature Range ...….............……....…....... -40
℃
to +125
℃
Humidity .................................................. 95% RH max. Non condensing
MTBF …… MIL-STD-217F, GB, 25
℃
, Full Load ……..… 1200Khrs typ.
Dimensions ......…….…….. 1.10x0.96x0.36 inches (27.9x24.4x9.1 mm)
Structure ..….………………………… Non-potted With Open Frame Type
Weight ………………………………………………………………….. 8.8g
OUTPUT SPECIFICATIONS:
Voltage Accuracy …………………....………………......…..…..… ±1.5% max.
Transient Response: 25% Step Load Change .........…..................…… <500us
Ripple and Noise 20MHz BW ………… Vo=3.3 & 5V ….… 75mV pk-pk max.
Vo=12 & 15V ... 100mV pk-pk max.
Temperature Coefficient .......................….………......…….. ±0.03%/℃ max.
Short Circuit Protection ...................…....…………………..……….. Continuous
Line Regulation (note1) ..….………...…………………….………. ±0.2% max.
Load Regulation (note2) ……………….........………….…..…….. ±0.2% max.
Over Voltage Protection ………………………….……… Zener or TVS Clamp
External Trim Adj. Range ………………………………….…..………….. ±10%
Current Limit ……………………………………. 110% - 140% Nominal Output
Start up time …………………………………….…….………..…..…... 8ms typ.
NOTE:
1. Measured from high line to low line.
2. Measured from full load to min. load.
3. Suffix ”N” to the model number with negative logic remote on/off
Module ON…………………………….………..….……. <1.2VDC
Module OFF …………... >+5.5VDC to 50VDC or Open Circuit
4. Suffix ”S” to the model number with SMD package.
5. The output ripple and noise is measured with 10uF tantalum and 1uF
ceramic capacitor across output.
SIZE SB Dimensions :
All Dimmension in inches(mm)
Tolerances: x.xx in ± 0.02 in (x.x mm ± 0.5 mm)
x.xxx in± 0.010 in (x.xx mm ± 0.25 mm)
THROUGH-HOLE PACKAGE
0.200 [5.08]
0.300 [7.62]
0.080 [2.03]
6
2
1
SMD-PACKAGE
0.200 [5.08]
0.36 [9.1]
0.098 [2.50]
0.300 [7.62]
0.080 [2.03]
6
2
1
0.36 [9.1]
0.098 [2.50]
0.15 [3.8]
BOTTOM VIEW
0.15 [3.8]
BOTTOM VIEW
PIN CONNECTION
Pin
Function
1
+V Input
2
-V Input
3
+V Output
4
Trim
5
-V Output
6 Remote ON/OFF
0.182 [4.62]
0.800 [20.32]
0.800 [20.32]
5
4
3
5
4
3
0.145 [3.68]
0.400 [10.16]
0.400 [10.16]
0.96 [24.4]
0.182 [4.62]
0.400 [10.16]
0.400 [10.16]
0.96 [24.4]
EC1SB Series Derating Curve
120.0
100.0
80.0
60.0
40.0
20.0
0.0
-40
-20
0
20
40
60
80
100
Natural convection
100LFM
-40
71
85
EXTERNAL OUTPUT TRIM
+Vout
TRIM DOWN
Output Load(%)
0.040[1.02]
0.080[2.02]
1.10 [27.9]
1.10 [27.9]
+Vout
TRIM
TRIM UP
TRIM
10K Ohms
TRIMPOT
Ambient Temperature(
o
C)
-Vout
-Vout
2
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