LC5540LF
Series
Single-Stage Power Factor Corrected
Off-Line Switching Regulators
Electrical Characteristics of MOSFET Unless specifically noted, TA is 25°C
Characteristic
Symbol
Test Conditions
Pins
Min.
Typ.
Max.
Unit
Drain-to-Source Breakdown Voltage
VDSS
LC5546LF
LC5547LF
LC5549LF
650
―
―
V
1–2
800
―
―
V
Drain Leakage Current
IDSS
―
―
300
μA
LC5546LF
―
―
1.9
Ω
On-Resistance
RDS(ON)
LC5547LF
LC5549LF
1–2
―
―
1.1
Ω
―
―
1.7
Ω
Switching Time
LC5546LF
tf
LC5547LF
LC5549LF
―
1–2
―
―
400
ns
―
300
ns
Thermal Resistance*
Rθch-F
LC5546LF
LC5547LF
LC5549LF
―
―
3.1
°C/W
―
―
―
2.2
°C/W
*The thermal resistance between the channels of the MOSFET and the internal frame.
LC5540LF-DS
4
SANKEN ELECTRIC CO., LTD.