78253 SERIES

Features:

Maxim Compatible
3.3V and 5V Versions
Isolation to 4kV
Frequency Range to 500kHz
Toroidal Construction
Industrial Standard Pinout
UL 94V-0 Package Material
Fully Encapsulated
Low Profile
Surface Mount Available


Specifications

Operating free air temperature range                                     40°C to 85°C
Storage temperature range                                                   50°C to 125°C
Lead Temperature 1.5mm from case for 10 seconds                               300°C
Peak current I_PK                                                                                      400mA
Isolation voltage 78253/XX(M) (flash tested for 1 second)                   1500VDC
Isolation voltage 78253/XX(M)V (flash tested for 1 second)                 4000VDC


Description

The 78253 SERIES of 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 surface mount devices are fully compatible with CECC00802 to 280°C which allows them to be placed and reflowed with IC's thus reducing time and cost in production.