︳
FEATURES
* 15W Isolated Output
* Efficiency to 90%
* 2:1 INPUT RANGE
* Regulated Outputs
* Fixed Switching Frequency
* Input under-voltage Protection
* Over Current Protection
* Remote ON/OFF
* Continuous Short Circuit Protection
* Without Tantalum Capacitors inside
EC3SB SERIES
15 WATT 2:1 INPUT
DC-DC CONVERTERS
MODEL
NUMBER
INPUT CURRENT
%
INPUT
OUTPUT OUTPUT CURRENT
VOLTAGE VOLTAGE MIN.
MAX. NO LOAD FULL LOAD EFF.
4000 mA
3000 mA
1250 mA
1000 mA
4000 mA
3000 mA
1250 mA
1000 mA
4000 mA
3000 mA
1250 mA
1000 mA
90 mA
85 mA
70 mA
70 mA
50 mA
50 mA
20 mA
20 mA
25 mA
30 mA
20 mA
20 mA
1280 mA
1453 mA
1420 mA
1420 mA
640 mA
718 mA
695 mA
695 mA
320 mA
359 mA
347 mA
351 mA
85
88
88
88
86
89
90
90
86
88
90
90
EC3SB -12S33 9-18 VDC 3.3 VDC
0 mA
EC3SB -12S05 9-18 VDC
5 VDC
0 mA
EC3SB -12S12 9-18 VDC
12 VDC
0 mA
EC3SB -12S15 9-18 VDC
15 VDC
0 mA
EC3SB -24S33 18-36 VDC 3.3 VDC
0 mA
EC3SB -24S05 18-36 VDC
5 VDC
0 mA
EC3SB -24S12 18-36 VDC
12 VDC
0 mA
EC3SB -24S15 18-36 VDC
15 VDC
0 mA
EC3SB -48S33 36-75 VDC 3.3 VDC
0 mA
EC3SB -48S05 36-75 VDC
5 VDC
0 mA
EC3SB -48S12 36-75 VDC
12 VDC
0 mA
EC3SB -48S15 36-75 VDC
15 VDC
0 mA
NOTE: 1. Nominal Input Voltage 12, 24 or 48 VDC
Cap.
Load
max.
4000uF
3000uF
1330uF
1000uF
4000uF
3000uF
1330uF
1000uF
4000uF
3000uF
1330uF
1000uF
1
SPECIFICATIONS
All Specifications Typical At Nominal Line, Full Load, and 25
℃
Unless Otherwise Noted
INPUT SPECIFICATIONS:
Input Voltage Range ....……………...............………. 12V ................ 9 - 18V
24V ……….... 18 – 36V
48V ……….... 36 – 75V
Under voltage lockout ……….…. 12Vin power up: 9V,……. power down: 8V
24Vin power up: 17V, .....power down: 16V
48Vin power up: 34V, …. power down: 32V
Input Surge Voltage (100mS max.)…………. EC3SB-12Sxx …25Vdc max.
EC3SB-24Sxx…50Vdc max.
EC3SB-48Sxx...100Vdc max.
Input Filter ………………………………..……….……………………. PI Type
Positive Logic Remote on/off Control :
Logic Compatibility …………………….. CMOS or Open Collector TTL
Module ON …………………………>+5.5V to 75VDC or Open Circuit
Module OFF …………………………………….……………. <1.2VDC
GENERAL SPECIFICATIONS:
Efficiency ...........................................………..………............ See Table
Isolation Voltage .................................……..………......... 1500 VDC min.
9
Isolation Resistance .....................…….………….……… 10 Ohms min.
Switching Frequency ............................……...................... 350KHz typ.
Operating Ambient Temperature Range...…..…...…….... -40
℃
to +85
℃
Derating, Above 71℃ ……………..…. Linearly to Zero Power at +105℃
Case Temperature (Note 4) ………………………………………….. 105℃
Cooling ………………………………………………… Natural Convection
Storage Temperature Range ...…............……....…....... -55
℃
to +125
℃
Humidity……………………………..……95% RH max. Non condensing
MTBF ……MIL-STD-217-F…………………….…………………T.B.D.hrs
Dimensions .............….. 1.00x1.00x0.4 inches (25.4x25.4x10.2mm)
SMD Type ... 1.00x1.00x0.36 inches (25.4 x 25.4 x 9.2mm)
Case Material ……..… Black Coated Copper with Non-Conductive Base
Weight…………………………………………………………………….18.4g
OUTPUT SPECIFICATIONS:
Voltage Accuracy ………………....……………….......…………… ±1.5% max.
Transient Response: 25% Step Load Change ............….....……… <500u sec.
Ripple and Noise, 20MHz BW(Note 3) …………………..…… 50mV p-p max.
SMD Type ……………...100mV p-p max.
Temperature Coefficient ....................….………...…..……….. ±0.03%/C max.
Short Circuit Protection ...................…....…………………..……….. Continuous
Line Regulation, Note1 ..………...………………...…………. ±0.2% max.
SMD Type …………………. ±0.3% max.
Load Regulation, Note2 ………………….........………………….. ±0.2% max.
SMD Type …………………. ±0.5% max.
Over Voltage Protection ……………………….………… Zener or TVS Clamp
External Trim Adj. Range ………………………………….…..………….. ±10%
Current Limit ……………………………………. 110% - 140% Nominal Output
Start up time ………………………………………………..……………..T.B.D.
NOTE :
1. Measured From High Line to Low Line
2. Measured From Full Load to min. Load
3. The output ripple and noise is measured with 10uF tantalum and 1uF
Ceramic capacitor across output.
4. Maximum case temperature under any operating condition should
Not be exceeded 105℃.
SIZE SB Dimensions:
All Dimensions In Inches (mm)
Tolerances Inches: X.XX= ±0.04 , X.XXX= ±0.010
Millimeters: X.X= ±1.0 , X.XX=±0.25
THROUGH-HOLE PACKAGE
SMD- PACKAGE
6
6
2
1
2
1
3
min.
5
Pin
BOTTOM
VIEW
5
4
TOP
VIEW
4
6
1
2
3
4
5
6
PIN CONNECTION
Function
Single
Dual
+Input
+Input
-Input
+V Output
Trim
-V Output
Remote
-Input
+V Output
Common
-V Output
Remote
Typical Derating curve for Natural Convection
120%
-40
71
DIA
EXTERNAL OUTPUT TRIM
+Vout
+Vout
100%
LOAD(%)
80%
60%
40%
20%
105
TRIM DOWN
Natural Convection
TRIM
TRIM UP
TRIM
10K Ohms
TRIMPOT
0%
-40
-20
0
20
40
60
o
Ambient Temperature( C)
80
100
-Vout
-Vout
2
PCB设计
