
TS19705CX6
Taiwan Semiconductor
1 Version: C1607
Single Stage Flyback or Buck-Boost Current Control
with Active PFC for LED lighting
TS19705 is constant current control IC with active
power factor correction isolated or non-isolated AC-DC
LED lighting control. The TS19705 is configurable as
an isolated, primary-side-regulated Flyback controller
or non-isolated Buck-Boost converter for LED lighting
applications. The IC achieves high power factor and
low Total Harmonic Distortion (THD) operation by
Boundary Conduction Mode (BCM). The line and load
regulation of LED current is about <±3% because of
particular control method. TS19705 also provides gate
driving voltage clamping, V
CC
overvoltage protection
and system output open/short circuit protection to
increase IC performance.
● Accuracy Constant Current <±3%
● Low BOM Cost
● Flyback or Buck-Boost w/o photocoupler
● Application Voltage Range: 90~264V
AC
● Built-in Active Power Factor Correction
● Good Line and Load Regulation
● Open-LED Protection on DMG pin
● Over-Voltage Protection on V
CC
pin
● Short-LED Protection
● Cycle by Cycle Over Current Protection on CS pin
● Over-Temperature Protection
● Gate Driving Voltage Clamping
● LED lighting
● Down lights, Tube lamps, PAR Lamps, Bulbs
1. COM
2. GND
3. CS
4. Output
5. V
CC
6. DMG
Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020
TYPICAL APPLICATOIN CIRCUIT