TPS1191RB-1-TR

Series:	*
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--

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Introduction to TPS1191RB-1-TR

TPS1191RB-1-TR is an LED Indication - Discrete product which is produced by Texas Instruments Incorporated, signed below TI. It is a high-power constant current LED driver designed for automotive lighting applications such as tail lamps. It is capable of providing stable and reliable drive for the LEDs for the purpose of applications that require more extensive control than those found in traditional discrete LED systems.

Features of TPS1191RB-1-TR

TPS1191RB-1-TR features linear drive current control and overdrive protection for LEDs. It brings an automotive lighting solution that simplifies drive current control and simplifies diagnostics with fault detection. It helps achieve constant current levels and consistent brightness thereby providing a robust automotive solution with ultimate safety and reliability.Other features include:• High-Performance Linear Constant Current Fading• Overvoltage Protection• Open / Shorted LED Protection• Programmable Overdrive Protection• Overcurrent Protection• Built-in Thermal Shutdown• Low Voltage (2.5 V min)• External Current Trimming

Application Field of TPS1191RB-1-TR

Due to the features described above, the TPS1191RB-1-TR LED driver IC is suited for automotive lighting applications as current sources, such as:• Brake lights• Hazard warning lights• Signal lights• Rear tail light• Parking lights• Daytime running lightsWith its low voltage operation, this driver IC is ideal for 12 V and 24 V automotive systems. It offers the best performance for constant current control for LEDs for different types of automotive lighting applications.

Working Principle of TPS1191RB-1-TR

The TPS1191RB-1-TR driver IC provides a constant current source for the LEDs for automotive lighting applications. The maximum peak current of this device is 20 A, and the voltage rating is up to 48 V.The TPS1191RB-1-TR LED driver integrates a PWM fading circuit, which enables a constant current flow. This circuit adjusts the LED current via an external trimming resistor or an adjustable current setting that helps to ensure a constant LED current even at inputs as low as 2.5 V.The TPS1191RB-1-TR also implements an overvoltage protection system which disables the device after detecting an external voltage of less than 4 V or greater than 48 V. This feature helps to protect the external components connected to the device and to protect LEDs from damage under abnormal operation conditions.The overdrive protection feature detects and disables the output stage in case of an accidental short on the output line. A thermal shutdown feature is implemented as part of the system in order to protect the device from damage due to excessive operating temperature. The overcurrent protection feature helps to protect the LEDs from excessive current, which can cause catastrophic failure of the LEDs.

Conclusion

As can be seen, the TPS1191RB-1-TR LED driver provides a reliable and low voltage operation for automotive lighting applications. Its features and design make it suitable for applications that require a robust and reliable solution, such as tail lamps and brake lights. Its wide range of features such as linear drive current control, overvoltage and overdrive protection, open/shorted protection, and low voltage operation makes it an ideal choice for different types of automotive lighting applications.

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