KMP_7625XEN Datasheet, PDF (1/4 Pages) Murata Manufacturing Co., Ltd. – EN Approved MAX250/251/253 Compatible Converter Transformers

76250ENC, 76253/XXENC
EN Approved MAX250/251/253 Compatible Converter Transformers
SELECTION GUIDE
Order Code
76250ENC
76253/35ENC
76253/55ENC
Input Voltage
V
-
3.3
5.0
Output
Voltage
V
-
5.0
5.0
FEATURES
RoHS compliant
Maxim MAX250/MAX251/MAX253
compatible
BS EN 60950 approved
Isolation to 6kVDC
Toroidal construction
Industry-standard pinout
UL 94 V-0 package materials
Fully encapsulated
Compatible with RoHS soldering systems
Backward compatible with
Sn/Pb soldering systems
DESCRIPTION
The 76250ENC converter transformer is
specifically designed for use with Maxim
chipsets to provide isolated RS232 interfaces. A
carefully controlled turns ratio ensures consistent
performance whilst a toroidal construction
minimises EMI.
The 76253/XXENC converter transformers are
specifically 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.
The devices are fully approved to BS EN 60950 for
use in telecoms applications.
76250ENC CHARACTERISTICS
Parameter
Primary Inductance, L_P (1&5)
Leakage Inductance, L (1&5)²
L
Interwinding Capacitance, C (1&2)
WW
D.C. Resistance, R (1&5)
DC
Volt-time Product, E_T (1&5)
Conditions
10kHz, 100mV
100kHz, 100mV
100kHz, 100mV
<0.1VDC
76253/35ENC CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L (1&5)
P
Secondary Inductance, L (2&6)
S
Leakage Inductance, L (1&5)2
L
Interwinding Capacitance, C (1&2)
WW
D.C. Resistance, R (1&5)
DC
Volt-time Product, E (1&5)
T
100kHz, 250mV
100kHz, 250mV
100kHz, 250mV
100kHz, 250mV
<0.1VDC
76253/55ENC CHARACTERISTICS
Parameter
Conditions
Primary Inductance, L (1&5)
P
Secondary Inductance, L (2&6)
S
Leakage Inductance, L (1&5)2
L
Interwinding Capacitance, C (1&2)
WW
D.C. Resistance, R_DC (1&5)
Volt-time Product, E (1&5)
T
100kHz, 250mV
100kHz, 250mV
100kHz, 250mV
100kHz, 250mV
<0.1VDC
ABSOLUTE MAXIMUM RATINGS
Operating free air temperature range 76250EN
Operating free air temperature range 76253/XXEN
Storage temperature range
Lead temperature 1.5mm from case for 10 seconds
Peak current, I 76250EN
PK
Peak current, I 76253/XXEN
PK
Isolation voltage (flash tested for 1 second)


For full details go to
www.murata-ps.com/rohs
SOLDERING INFORMATION³
Peak wave solder temperature
Pin finish
All specifications typical at T =25°C
A
1 Refer to mechanical dimensions for pin locations shown in brackets.
2 With pins 2 & 6 short circuited.
3 For further information, please visit www.murata-ps.com/rohs
Max. Output
Current
mA
-
100
200
Isolation
Voltage
VDC
6000
6000
6000
Turns
Ratio
1CT:1
1:√5
1:1.33
Min.
Typ.
Max.
Units
1.0
2.0
2.5
mH
35
40
μH
1.5
3.0
pF
1.0
2.0
Ω
50
Vμs
Min.
Typ.
Max.
Units
140
200
μH
700
1000
μH
5.0
7.0
μH
2.7
3.5
pF
0.4
0.8
Ω
25
35
Vμs
Min.
Typ.
Max.
Units
80
150
μH
142
267
μH
7.0
10.0
μH
2.7
3.5
pF
0.5
0.9
Ω
30
40
Vμs
0°C to 70°C
-40°C to 85°C
-50°C to 125°C
300°C
300mA
400mA
6000VDC
300˚C for 10 seconds
Matte tin
www.murata-ps.com
Technical enquiries - email: [e-mail], tel: [phone]
KMP_7625XENC_B03 Page 1 of 4