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. 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 V_DC) 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

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