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UM3321

Universal Microelectronic
Part Number UM3321
Manufacturer Universal Microelectronic
Description (UM3300 Series) 10 Watt DC-DC Converters
Published Jun 8, 2006
Detailed Description www.DataSheet4U.com UM3300 SERIES 10 Watt DC-DC Converters ♦ 2:1 Input Range ♦ 25 Watts/Cubic Inch ♦ Efficiency to 82% ...
Datasheet PDF File UM3321 PDF File

UM3321
UM3321

Overview
www.
DataSheet4U.
com UM3300 SERIES 10 Watt DC-DC Converters ♦ 2:1 Input Range ♦ 25 Watts/Cubic Inch ♦ Efficiency to 82% ♦ Short circuit protection SPECIFICATIONS All specifications are typical at nominal line, full load and 25°C unless otherwise noted.
GENERAL SPECIFICATIONS Efficiency .
………………………………………….
.
.
See Table Isolation Voltage …………………………….
.
1500 VDC min.
8 Isolation Resistance .
…………………….
.
….
.
10 ohms min.
Switching Frequency .
………….
……………….
.
400KHz typ.
Operating Temperature Range …………… -25°C to +100°C Derating, 50°C to 100°C ………………….
….
.
.
See Note 6 7 Case Temperature …………………………….
.
.
100°C max.
Cooling .
……….
.
…………………….
….
Free-Air Convection.
Storage Temperature Range ………….
….
.
.
-40°C to+105°C 8 Case Material ………………….
.
Black-Coated Copper with Non-Conductive Base.
Dimensions Case A …………….
.
.
1.
25 x 0.
80 x 0.
40 inches (31.
75 x 20.
32 x 10.
16mm) Weight .
.
…………………………………………….
….
.
.
….
18g NOTES: 1.
di/dt=0.
1A/1uS, Vin= nominal line,Tc=25°C; load change =0.
5 Io max.
to 0.
75 Io max.
and 0.
75 Io max.
to 0.
5 Io max.
2.
Measured with 0.
1uF ceramic cap.
Connected to the output pins.
3.
Measured from low line to high line.
4.
Measured from full load to 1/4 full load.
5.
The converter required a minimum 10% loading on the output.
Operation below 10% load conditions will not damage these devices.
However, they may not meet all listed spec.
6.
Output Power (%) 100 INPUT SPECIFICATIONS Input Voltage Range, 24V .
…………………….
.
…….
18-36V 48V ……………….
…………… 36-75V Input Filter ……………………………………… Pi Network OUTPUT SPECIFICATIONS Voltage Accuracy, Single Output …….
…….
.
…….
±2% max.
1 Transient response , ±1% Error Band ………… <500 u sec.
2 Ripple and Noise, 20MHz BW .
.
………….
100mV P-P max.
Temperature Coefficient ………………….
.
.
±0.
02%/°C max.
Short Circuit Protection .
……….
.
……………….
.
Continuous 3 Line Regulation ………………….
….
.
………….
.
±0.
2% max.
4 Load Regulation ………………….
.
…………….
.
±0.
5% max.
5 Minimum Load …………………….
.
…………… 10% Io max.
0 Ambient -25 50 100 Temperature(°C) 7.
Maximum case temperature under a...


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