TS19451 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – AC/DC WLED Driver with Internal MOSFET Universal Switch Mode

SOT-89
Pin Definition:
1. Drain
2. GND
3. VDD
TS19451
AC/DC WLED Driver with Internal MOSFET
Universal Switch Mode
General Description
The TS19451 is a PWM high efficiency LED driver control IC. It allows efficient operation of LED strings from
voltage source ranging up to 400VDC. It includes an internal high voltage switching MOSFET controlled with fixed
off-time of approximately 10.5µS.
The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The
output current is internally fixed at 50mA. The peak current control scheme provides good regulation of the output
current throughout the universal AC line voltage range of 85~264VAC or DC input voltage of 20~400V
Features
● Constant output current at 50mA
● Universal 85~264VAC operation
● Fixed off-time buck converter
● Internal 475V power MOSFET
Typical Application Circuit
Application
● Decorating LED lighting
● Lower power lighting fixtures
● Back light of flat panel displays
Ordering Information
Part No.
Package
Packing
TS19451CY RMG SOT-89
1Kpcs / 7” Reel
Note: “G” denotes for Halogen Free
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
Input Voltage Range
V_IN to GND
~ +475
V
Supply Current
I_DD
5
mA
Power Dissipation @ T_A=25ºC
P_D
1300
mW
Operating Ambient Temperature
Storage Temperature Range
Junction Temperature Range
Thermal Resistance – Junction to Ambient
T_OPR
T_STG
T_J
Rθ_JA
-40 to +85
-65 to +150
-40 to +150
128
ºC
o_C
o_C
o_C/W
Note: Stresses beyond those listed under ”Absolute Maximum Ratings” may cause permanent damage to the
device. These are stress rating only, and functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
1/7
Version: B11