Transformers MAX253 CNVR XFRMR 3.3Vin 5Vout 1500VDC

78253/35C

Manufacturer Part Number78253/35C
DescriptionTransformers MAX253 CNVR XFRMR 3.3Vin 5Vout 1500VDC
ManufacturerMurata Power Solutions Inc
TypeCompatible Converter Transformers
78253/35C datasheet
 


Specifications of 78253/35C

Power Rating500 mWPrimary Voltage Rating3.3 V
Secondary Voltage Rating5 VMounting StyleThrough Hole
Dimensions9.52 mm L x 8.89 mm W x 6.35 mm HProductToroidal Power Transformers
Height6.35 mmLength9.52 mm
Number Of Outputs2Operating Temperature Range- 40 C to + 85 C
Secondary Resistance0.4 OhmsTermination StyleThrough Hole
Turns Ratio1:5Width8.89 mm
Primary Voltages5VCurrent Rating100mA
Transformer MountingThrough HoleIsolation Voltage1500VDC
Peak Reflow Compatible (260 C)YesTransformer TypePulse
Supply Voltage3.3VRohs CompliantYes
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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FEATURES
RoHS compliant
Maxim MAX253 compatible
3.3V and 5V versions
Isolation to 4kV
DC
Frequency range to 500kHZ
Toroidal construction
Industry-standard pinout
UL 94 V-0 package materials
Fully encapsulated
Low profi le
Surface mount option
Industrial temperature range
DESCRIPTION
The 78253 series of converter transformers are
specifi cally designed for use with the MAX253
chip set to provide isolated power supplies. The
5V version can supply 1W and the 3.3V version
can supply 500mW. A centre tapped secondary
winding allows for full bridge, half bridge or
voltage doubling.
 
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
SELECTION GUIDE
Output
Input Voltage
Voltage
Order Code
V
78253/35C
3.3
5.0
78253/35MC
78253/55C
5.0
5.0
78253/55MC
78253/35VC
3.3
5.0
78253/35MVC
78253/55VC
5.0
5.0
78253/55MVC
ORDER CODE DETAILS
Order Code
Package Type
78253/XXC
6 Pin DIL
78253/XXMC
6 Pin SM
78253/XXMC-R
6 Pin SM
78253/35(M)C CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L
100kHz, 250mV
P
Secondary Inductance, L
100kHz, 250mV
S
Leakage Inductance, L
100kHz, 250mV
L
Interwinding Capacitance, C
100kHz, 250mV
WW
Primary D.C. Resistance, R
>0.1VDC
DC
Volt-time Product, Et
Pins 1/2 or 2/3
78253/55(M)C CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L
100kHz, 250mV
P
Secondary Inductance, L
100kHz, 250mV
S
Leakage Inductance, L
100kHz, 250mV
L
Interwinding Capacitance, C
100kHz, 250mV
WW
Primary D.C. Resistance, R
>0.1VDC
DC
Volt-time Product, Et
Pins 1/2 or 2/3
78253/35(M)VC CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L
100kHz, 20mV
P
Secondary Inductance, L
100kHz, 20mV
S
Leakage Inductance, L
100kHz, 250mV
L
Interwinding Capacitance, C
100kHz, 250mV
WW
Primary D.C. Resistance, R
>0.1VDC
DC
Volt-time Product, Et
Pins 1/2 or 2/3
78253/55(M)VC CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L
100kHz, 20mV
P
Secondary Inductance, L
100kHz, 20mV
S
Leakage Inductance, L
100kHz, 250mV
L
Interwinding Capacitance, C
100kHz, 250mV
WW
Primary D.C. Resistance, R
>0.1VDC
DC
Volt-time Product, Et
Pins 1/2 or 2/3
All specifi cations typical at T
=25°C
A
Technical enquiries - email: mk@murata-ps.com, tel:
78253 Series
MAX253 Compatible Converter Transformers
Max. Output
Isolation
Turns
Current
Voltage
Ratio
V
mA
V
DC
100
1500
1:2.27
200
1500
1:1.31
100
4000
1:2.14
200
4000
1:1.33
Packaging Type
Quantity
Tube
Tube
Tape & Reel
Min.
Typ.
Max.
0.30
0.38
0.46
1.60
2.00
2.40
0.30
1.00
30
50
0.40
1.00
30
35
Min.
Typ.
Max.
0.60
0.83
1.10
1.10
1.40
1.70
0.35
1.00
30
50
0.70
1.50
40
50
Min.
Typ.
Max.
110
142
185
550
710
850
3.00
5.00
4.20
8.00
0.30
0.50
18
22
Min.
Typ.
Max.
190
240
310
350
444
540
5.20
8.00
4.20
8.00
0.40
0.60
25
28
+44 (0)1908 615232
KMP_78253C_C03 Page 1 of 5
Package
Style
DIL
SM
DIL
SM
DIL
SM
DIL
SM
50
50
500
Units
mH
mH
μH
pF
Ω
Vμs
Units
mH
mH
μH
pF
Ω
Vμs
Units
μH
μH
μH
pF
Ω
Vμs
Units
μH
μH
μH
pF
Ω
Vμs

78253/35C Summary of contents

  • Page 1

    ... A centre tapped secondary winding allows for full bridge, half bridge or voltage doubling.   For full details go to www.murata-ps.com/rohs www.murata-ps.com SELECTION GUIDE Output Input Voltage Voltage Order Code V 78253/35C 3.3 5.0 78253/35MC 78253/55C 5.0 5.0 78253/55MC 78253/35VC 3.3 5.0 78253/35MVC 78253/55VC 5 ...

  • Page 2

    ... Isolation voltage 78253/XX(M)C (fl ash tested for 1 second) Isolation voltage 78253/XX(M)VC (fl ash tested for 1 second) PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS 6 Pin DIL 0.375 (9.52) MAX Primary 1 0.354 2 (9.0) MAX 78253/35C 3 XYYWW 0.25 (6.35) 0.135±0.02 (3.44±0.50) 0.012(0.30) 0.008(0.20) 0.40 0.1 (2.54) (10.16) ...

  • Page 3

    ... EFFICIENCY CURVES 100 100 120 100 100 80 60 78253 Series MAX253 Compatible Converter Transformers 78253/55(M)C 300 400 100 200 0 Output Current (mA) 78253/55(M)VC 0 100 200 300 400 Output Current (mA) 78253/55(M)C 0 100 200 300 400 Output Current (mA) 78253/55(M)VC 0 100 200 300 400 Output Current (mA) Technical enquiries - email: mk@murata-ps ...

  • Page 4

    ... This verify the integrity of that isolation. series has toroidal isolation transformers, with no additional insulation between pri- All products in this series are 100% production mary and secondary windings of enameled tested at their stated isolation voltage ...

  • Page 5

    ... ISO 9001 & ISO 14001 REGISTERED Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi ...