3D Model Datasheet

GA3544 Flyback Transformer

for TI UCD3K Digital Power Controller

Specified by Texas Instruments for use in the Bias Power Supply for their UCD3K Digital Power Controller
Designed to meet UL/CSA/IEC 60950 Reinforced Insulation Class; 3 mm creepage/clearance

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Count	Unit price
1	$4.59
200	$3.94
600	$3.43
1200	$2.98
2400	$2.56
5000	$2.35

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Typical Application

Works with Texas Instruments UCD3K

AC Input Voltage	Output		Power	Fsw
AC Input Voltage	S1	Sense	Power	Fsw
85 V — 265 V	12 V , 0.2 A	12 V , 0.2 A	5 W	100 kHz

Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (mH) 1 (Tolerance: ±10%)	Inductance min at 0.3 A (mH)	DCR max (Ω) 2				Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (mH) 1 (Tolerance: ±10%)	Inductance min at 0.3 A (mH)	Pri	S1	Sense	P1	Leakage Inductance max (µH) 3	Pri : S1 : Sense : P1	Isolation Voltage (Vrms) 4
GA3544-BL	2.3	1.6	0.860	0.109	0.155	0.131	17.6	1 : 0.158 : 0.079 : 0.158	3000

Notes

Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using an Agilent/ HP 4263B impedance analyzer or equivalent.
DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Leakage inductance is for the primary and is measured with the secondary shorted.
Isolation: 3000 Vrms, one minute Pri and P1 to S1 and Sense; 1500 Vrms all windings to core

Termination:

RoHS-compliant. Tin-silver (96.5/3.5) over tin over copper terminations.

Environmental

Ambient temperature range:

–40°C to +85°C

Storage temperature range:

Component: –40°C to +85°C.
Tray packaging: –40°C to +80°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Physical characteristics

General specification

Core Material:

Ferrite

Weight:

13.4 g

Packaging:

Packaged 100 per tray

Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

PCB Washing:

Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf.

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