TS19453 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – AC/DC Programmable Current WLED Driver

SOP-8
Preliminary
TS19453
AC/DC Programmable Current WLED Driver
w/PWM Dimming Control
Pin Definition:
1. Rsense 8. Drain
2. Ground 7. Drain
3. PWMD
6. Drain
4. Vdd
5. Ground
General Description
The TS19453 is a PWM high efficiency programmable current LED driver with PWM dimming 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 12µS.
The LED string is driven at constant current, thus providing constant light output and enhanced reliability. The
output current is internally programmable up to 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
● Adjust constant output current up to 50mA(typ)
● Universal 85~264VAC operation
● Over temperature protection with hysteresis
● PWM dimming
● Fixed off-time buck converter
● Internal 475V power MOSFET
Typical Application Circuit
Application
● Decorating LED lighting
● LED lamps with AC or DC operation.
Ordering Information
Part No.
Package
Packing
TS19453CS RLG
SOP-8 2.5Kpcs/13” Reel
Note: “G” denote for Halogen Free Product
Absolute Maximum Rating
Parameter
Symbol
Limit
Unit
Input Voltage Range
V_IN to GND
~ +475
V
VDD to GND
V_DD to GND
~9
uA
PMWD, Rsense to GND
~ V_DD+0.3
uA
Power Dissipation @ T_A=25ºC
P_D
Internally Limited
W
Operating Ambient Temperature
Storage Temperature Range
Thermal Resistance – Junction to Ambient
T_OPR
T_STG
Rθ_JA
-40 to +85
-65 to +150
160
ºC
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: Preliminary