MT3A- series
T E C H N I C A L S P E C I F I C AT I O N
OUTPUT SPECIFICATIONS
Output power
Voltage accuracy
Minimum load (Note 5)
Line regulation
Load regulation
LL to HL at Full Load
Single
Min Load to Full Load
Dual
Cross regulation (Dual) Asymmetrical load 25% / 100% FL
Ripple and noise
Temperature coefficient
20MHz bandwidth
3.3Vout
Others
Full load and nominal Vin
3 Watts, max.
± 1% Input voltage range
See table
± 0.2%
Input filter
5V input
12V input
24V input
48V input
Nominal Vin and full load
Power up
All specifications are typical at nominal input, full load and 25ºC otherwise noted
INPUT SPECIFICATIONS
5V nominal input
12V nominal input
24V nominal input
48V nominal input
4.5 – 6VDC
9 – 18VDC
18 – 36VDC
36 – 75VDC
Pi type
15VDC
36VDC
50VDC
100VDC
120mAp-p
30mS, typ.
± 0.3% Input surge voltage
± 0.2% 100mS max
± 2%
± 5% Input reflected ripple current
See table Start up time
±0.02%
/ ºC, max.
500µS
180%, typ.
Nominal Vin and
constant resistive load
Transient response recovery time 25% load step change
Over load protection
Short circuit protection
% of FL at nominal input
ENVIRONMENTAL SPECIFICATIONS
Operating ambient temperature
Storage temperature range
Maximum case temperature
Thermal shock
-25ºC ~ +85ºC (with derating)
-40ºC ~ +125ºC
100ºC
MIL-STD-810F
MIL-STD-810F
5% to 95% RH
Continuous, automatics recovery
GENERAL SPECIFICATIONS
Efficiency
Isolation voltage
Isolation resistance
Isolation capacitance
Switching frequency
Design meet safety standard
Case material
Base material
Potting material
MTBF (Note 1)
BELLCORE TR-NWT-000332
MIL-HDBK-217F
Input
to Output
Input (Output)to case
See table
500VDC ,min
500VDC ,min
10 ohms, min.
9
Vibration
Relative humidity
EMC CHARACTERISTICS
EN55022
Class A
300pF, max. EMI
100KHz, min.
IEC60950-1,UL60950-1,EN60950-1
Nickel-coated copper
Non-conductive black plastic
Epoxy (UL94-V0)
3.706 x 10 hrs
6
3.018 x 10 hrs
6
Note
1.
2.
3.
4.
5.
BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC.
MIL-HDBK-217F Notice2 @Ta=25 ºC, Full load(Ground, Benign, controlled environment).
Maximum value at nominal input voltage and full load.
Typical value at nominal input voltage and full load.
Test by minimum Vin and constant resistive load.
The output requires a minimum loading on the output to maintain specified regulation. Operation under no-load condition will not
damage these devices, however they may not meet all listed specification.
Model
Number
MT3A-0533SI
MT3A-0505SI
MT3A-0512SI
MT3A-0512WI
MT3A-0515WI
MT3A-1233SI
MT3A-1205SI
MT3A-1212SI
MT3A-1212WI
MT3A-1215WI
MT3A-2433SI
MT3A-2405SI
MT3A-2412SI
MT3A-2412WI
MT3A-2415WI
MT3A-4833SI
MT3A-4805SI
MT3A-4812SI
MT3A-4812WI
MT3A-4815WI
Input
Range
4.5 – 6 VDC
4.5 – 6 VDC
4.5 – 6 VDC
4.5 – 6 VDC
4.5 – 6 VDC
9 – 18 VDC
9 – 18 VDC
9 – 18 VDC
9 – 18 VDC
9 – 18 VDC
18 – 36 VDC
18 – 36 VDC
18 – 36VDC
18 – 36 VDC
18 – 36 VDC
36 – 75 VDC
36 – 75 VDC
36 – 75 VDC
36 – 75 VDC
36 – 75 VDC
Output
Voltage
3.3 VDC
5 VDC
12 VDC
± 12 VDC
± 15 VDC
3.3 VDC
5 VDC
12 VDC
± 12 VDC
± 15 VDC
3.3 VDC
5 VDC
12 VDC
± 12 VDC
± 15 VDC
3.3 VDC
5 VDC
12 VDC
± 12 VDC
± 15 VDC
Output Current
Min. load
60mA
60mA
25mA
±12mA
±10mA
60mA
60mA
25mA
±12mA
±10mA
60mA
60mA
25mA
±12mA
±10mA
60mA
60mA
25mA
±12mA
±10mA
Full load
600mA
600mA
250mA
± 125mA
± 100mA
600mA
600mA
250mA
± 125mA
± 100mA
600mA
600mA
250mA
± 125mA
± 100mA
600mA
600mA
250mA
± 125mA
± 100mA
Output
rrr Nipple&Noise
75mVp-p
75mVp-p
120mVp-p
120mVp-p
150mVp-p
75mVp-p
75mVp-p
120mVp-p
120mVp-p
150mVp-p
75mVp-p
75mVp-p
120mVp-p
120mVp-p
150mVp-p
75mVp-p
75mVp-p
120mVp-p
120mVp-p
150mVp-p
(3)
Input
Current
628mA
882mA
869mA
869mA
882mA
257mA
362mA
342mA
342mA
342mA
128mA
178mA
171mA
171mA
171mA
63mA
91mA
86mA
86mA
87mA
(2)
Eff
(%)
67
72
73
73
72
68
73
77
77
77
68
74
77
77
77
70
73
77
77
76
(3)
Capacitor
Load max
2200µF
1000µF
170µF
± 96µF
± 47µF
2200µF
1000µF
170µF
± 96µF
± 47µF
2200µF
1000µF
170µF
± 96µF
± 47µF
2200µF
1000µF
170µF
± 96µF
± 47µF
(4)
MT3A-4805SI
OUTPUT POWER (%)
120
100
80
60
40
20
0
-25
-5
15
35
55
75
95
115
AMBIENT TEMPERATURE(℃)
