TSCR4 LED Driver ICs delivering improved performance at comparable cost
The Taiwan Semiconductor TSCR4 family of linear CMOS LED driver ICs offers a drop-in replacement for legacy bipolar drivers with much improved performance . These constant current drivers provide stable LED current over a wide range of conditions including source voltage variations and changes in load or temperature variations.
The Taiwan Semiconductor TSCR4 family of linear CMOS LED driver ICs offers a drop-in replacement for legacy bipolar drivers with much improved performance . These constant current drivers provide stable LED current over a wide range of conditions including source voltage variations and changes in load or temperature variations. Compared to legacy bipolar LED drivers, the TSCR4 family offers higher current set-point accuracy and stability, lower quiescent current, tighter output compliance voltage, and improved temperature coefficient. These ICs enable upgrades of existing designs for higher performance with no re-design effort required.
Features
- Higher accuracy of output current improves manufacturing yields in mass production
- Lower quiescent current (e.g., 300 mA. vs 1 A at 24 VDC) lowers power dissipation and reduces battery standby and operating power consumption
- More precise output voltage drop: CMOS control of voltage drop enables operation closer to the rail
- Higher stability of output current delivers consistent brightness control and extends LED life
- Better temperature coefficient (-0.07%/°C) controls output current with temperature increases to eliminate the risk of thermal runaway
- AEC-Q100 parts available, ideal for many basic automotive lighting applications
- PWM dimming: up to 10 KHz digital input for 0 to 100% dimming (TSCR421CX6/H)
- Supply voltage up to 40 V, supports large LED arrays
- Easy parallel driver structure
more information: www.taiwansemi.com/en
