8 Pin, 4.5kVrms DC/DC Converter Isolation Modules
Designed for Maxim MAX253 and MAX845
8 Pin, 4.5kVrms DC/DC
Converter Isolation Modules
The TGMR-4xxV8LF, reinforced insulation, 8 pin transformer series provides the isolation
and voltage outputs required for low cost DC/DC converter circuits. Designed specifi-
cally for use with the Maxim MAX253 and MAX845 monolithic oscillator/power drivers
with 3.3V or 5V power source. UL60950 and EN60950 recognized. As well, this series
is ROHS compliant and lead free. Smaller packages are available for lower isolation
voltage applications. For more information, pertaining to the MAX253 or MAX845 please
contact Maxim at (408) 737-7600.
Circuit Diagram
V8 SMD Package
Electrical Specifications @ 25C
PRI Pins: 1-4 (tie pins 2-3)
Insulation: Reinforced, 300V working voltage
Operating Temp: -40 to +85C
Part Number Turns Ratio +/-3% OCL Typ. PRI DCR ET Constant Isolation
SMD PRI : SEC H Max V-s Min. Vrms
TGMR-410V8LF 1CT:0.50CT 500 0.9 18 4,500
TGMR-420V8LF 1CT:0.375CT 500 0.9 18 4,500
TGMR-430V8LF 1CT:0.75CT 500 0.9 18 4,500
TGMR-440V8LF 1CT:1.33CT 640 0.9 20 4,500
TGMR-450V8LF 1CT:1CT 800 0.9 22 4,500
HALO Electronics 2880 Lakeside Drive, Suite 116 Santa Clara, CA 95054 PH: 650-903-3800
www.haloelectronics.com info@haloelectronics.com This Datasheet: tgm-nf.pdf Rev. 6/20138 Pin, 4.5kVrms DC/DC
Converter Isolation Modules
8 Pin, 4.5kVrms DC/DC
Converter Isolation Modules
The TGM-NF, reinforced insulation, 8 pin transformers provide the isolation and voltage
outputs required for low cost DC/DC converter circuits. UL1950, IEC950 and EN60950
recognized. Designed specifically for use with the Maxim MAX253 and MAX845
monolithic oscillator/power drivers with 3.3V or 5V power source. Smaller packages are
available for lower isolation voltage applications. For more information, pertaining to the
MAX845 please contact Maxim at (408) 737-7600. Maxim is a registered trademark of
Maxim Integrated Products.
Circuit Diagram
NF Package
Electrical Specifications @ 25C Patented Construction
Operating Temp: -40 to +85C US Pat Nbrs: 5,656,985 6,297,721 B1
Pri DCR: 0.8 6,297,720 B1 6,320,489 B1
Pri OCL (1-4, tie 2-3): 500H typ 6,344,785 B1 6,662,431 B1
Turns Ratio (3%) ET Constant Isolation
Part Number PRI:SEC Vs Min Vrms
TGM-410NF 2CT:1CT 18 4,500
TGM-420NF 8CT:3CT 18 4,500
TGM-430NF 4CT:3CT 18 4,500
TGM-440NF 3CT:4CT 18 4,500
TGM-450NF 1CT:1CT 18 4,500
HALO Electronics 2880 Lakeside Drive, Suite 116 Santa Clara, CA 95054 PH: 650-903-3800
www.haloelectronics.com info@haloelectronics.com This Datasheet: tgm-nf.pdf Rev. 6/2013
NOT RECOMMENDED
FOR NEW DESIGNS