New Industry Products

Taiwan Semi Introduces 2A LED Driver with 4.5-75V Input

October 21, 2021 by Hailey Stewart

AEC-Q100 qualified, high efficiency driver for automotive and high-reliability DC input industrial and medical lighting; Hysteretic control delivers 2% accuracy with minimal external parts count.

Taiwan Semiconductor, a global supplier of discrete power electronics devices, LED drivers, analog ICs and ESD protection devices, announces the introduction of the TS19503 single channel, continuous conduction, hysteretic mode converter for driving single or multiple LEDs. Featuring best-in-class 4.5-75V input and 2A output, the TS19503 offers up to 97% efficiency and 2% accuracy over a wide range of external conditions. AEC-Q100 qualification assures high reliability while the hysteretic (bang-bang) control technique provides high accuracy and reduced external parts count. Target automotive applications include high and low beam headlights; daytime running lights; turn indicators; position indicator lights; fog lights; ATV and four-wheel drive high-brightness lamps. The TS19503 is also well suited for DC input industrial and medical applications where SELV and line isolation considerations are a concern.


Image used courtesy of Taiwan Semiconductor


The TS19503 offers designers a number of benefits and improvements over competing devices:

  • 4.5V – 75V Input Voltage.  Best-in-Class. One device handles many applications
  • Wide Operating Temperature. -40C to +125C
  • Hysteretic (Bang-Bang) Control. Delivers exceptional accuracy with minimal external parts
  • High Efficiency. Low Rds(on) internal MOSFET enables up to 97% efficiency
  • PWM and analog dimming. 1000:1 dimming range
  • Adjustable frequency to 1 MHz. Enables design optimization to meet EMI requirements
  • MSOP-10EP package. Heat sink on package improves thermal performance
  • Internal Fault Status Flag. Provides added protection against damaging faults

“The TS19503’s constant current mode hysteretic control results in a very low parts count,” reported Sam Wang, Vice President, TSC Products.  “And our design calculator tool makes short work of implementing a working solution.”

The TS19503 is the most highly integrated LED driver IC in its output power class, delivering up to 25 Watts of driving power. Design resources include an online video, users’ manual and design calculator tool.

Click here for complete product specifications.

About Taiwan Semiconductor (TSC).

Recognized for more than 40 years for its core competence in discrete power rectifiers, Taiwan Semiconductor’s expanded product portfolio provides a complete solution from one source: including trench Schottky’s, MOSFETs, power transistors, LED driver ICs, analog ICs and ESD protection devices. A global enterprise with 2,000 over employees, TSC’s production facilities in China and Taiwan are fully compliant with current automotive and environmental standards such as IATF16949, ISO9001 and ISO14001. Taiwan Semiconductor products are used in a vast array of applications in the electronics industry including automotive, computer, consumer, industrial, telecom and photovoltaic. Through strategic expansion of innovative manufacturing capabilities and its focus on pioneering efficient semiconductor solutions, TSC is the right choice for a successful and lasting business relationship.