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MODEL SELECTION CHART
E-mail:
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Single & Dual Output DC/DC Converter
Series LCD20
20Watt | DC-DC Converter
Part Number
LCD20-12S3P3 LCD20-12S05 LCD20-12S12 LCD20-12S15 LCD20-12D12 LCD20-12D15 LCD20-24S3P3 LCD20-24S05 LCD20-24S12 LCD20-24S15 LCD20-24D12 LCD20-24D15 LCD20-48S3P3 LCD20-48S05 LCD20-48S12 LCD20-48S15 LCD20-48D12 LCD20-48D15
Input Voltage
Vdc
9-18 9-18 9-18 9-18 9-18 9-18 18-36 18-36 18-36 18-36 18-36 18-36 36-75 36-75 36-75 36-75 36-75 36-75
Input Current
No-Load Full Load (mA TYP) (mA TYP)
30 1456 30 1938 30 1920 30 1911 30 1915 30 1917 25 719 25 958 25 949 25 945 25 947 25 947 20 356 20 473 20 474 20 472 20 473 20 474
Output Voltage
Vdc
3.3 5 12 15
±12 ±15 3.3
5 12 15 ±12 ±15 3.3 5 12
15 ±12
±15
Output Current
Full Load (mA)
4500 4000 1670 1330 ±833 ±667 4500 4000 1670 1330 ±833 ±667
4500 4000 1670 1330 ±833 ±667
Efficiency
%TYP
85 86 87 87 87 87 86 87 88 88 88 88 87 88 88 88 88 88
Capacitor Load
uF MAX
8200 5600 960 680 470 330 8200 5600 960 680 470 330 8200 5600 960 680 470
330
NOTE: All specifications in this datasheet are measured at an ambient temperature of 25°C, humidity<75%, nominal input voltage and at rated output load unless otherwise specified.
Output Voltage Adjustment
Control Pin Suggest Circuit
1/3
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IInnpput Sppecifications
Parameters
Voltage Types
Start-up voltage / under voltage shut down
Surge voltage (100 msec. max.)
Reflected input ripple current Filter Protection
Conditions
12 Vin 24 Vin 48 Vin 12 Vin 24 Vin 48 Vin
LC Network Fuse Recommended
Min
Typ
8.7/8.3 16.9/16.2 33.0/30.5
30
Max
2:1 9 18 36 25 50 100
Units
VDC
VDC V
V mA
OOuuttpput Specifications
Parameters
Conditions
Voltage Tolerance
Output voltage adj. range
only for single output models
Line Regulation (Vmin – Vmax)
single output dual output
Load Regulation (25 – 100 %)
single output dual output models balanced load
Load variation(25% /100%)
dual output models unbalanced load
Minimum load
required
Ripple and noise(20 MHz bandwidth)
with external capacitor (See Note 1)
Temperature coefficient
Output current limitation
Short circuit protection
3.3VDC
Over voltage protection
5VDC 12VDC
15VDC
Start up time
nominal Vin and constant resistive load
Transient response setting time
25% load step change
Min
0
3.7 5.6 13.5 16.8
Typ Max
±2 ±10 0.5 0.5 0.5 1.0 5.0
10 100
±0.05 at 150 % of Iout max., constant current
Hiccup (automatic recovery) 5.4 7.0 19.6 20.5
30 300
Units
% % % % % % % % mVp-p
%/℃
Vout Vout Vout Vout ms us
General Sppecifications
Parameters
Conditions
Operating(with derating)
Temperature ranges
Case temperature
Storage
.