LM3500TLX-21/NOPB

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The LM3500TLX-21/NOPB is a member of the Power Management Integrated Circuits (PMIC) - LED Drivers family, which are designed to provide efficient and precise lighting control for both linear and switched LED applications. This family of products enables designers to build power-efficient systems, with low current consumption, over wide range of light output levels, for both outdoor and indoor LED environments.

The LM3500TLX-21/NOPB is a 30V, 6V, 3A, synchronous, step-down regulator which is capable of regulating both input and output voltages. It provides a voltage range of 0.7V to 28V, a 6V output and a switching frequency of 1.92MHz. This device is ideal for applications such as LED backlighting, lighting fixtures, key-board lamps and computerized keyboards. It is also suitable for applications such as vehicle signal lighting, LED linear control and LED backlighting.

In terms of design and architecture, the LM3500TLX-21/NOPB combines a highly efficient 8-bit synchronous buck controller, with a 6V 3A linear power stage and multiple synchronous rectification pins. This combination provides high efficiency and superior accuracy in controlling LED power. The LM3500TLX-21/NOPB features a circuit architecture that enables low input ripple, with minimal harmonic ripple distortion, for low noise operation. Additionally, the LM3500TLX-21/NOPB features programmable slew rate, system protection and soft-start, allowing the designer to fine tune their output control system.

An additional feature that the LM3500TLX-21/NOPB provides is its ability to support a variety of communication protocols including I2C, UART, or pulse-width modulation in order to better serve its applications. I2C is used to control power management tasks such as current regulation, over voltage protection, and temperature sensing. UART and pulse-width modulation (PWM) control can be used to facilitate the communication between the LED driver and microprocessors and other digital devices. The LM3500TLX-21/NOPB supports PWM dimming frequency up to 95kHz, as well as non-volatile memory for saving system parameters.

The LM3500TLX-21/NOPB’s output voltage can be adjusted through a combination of the onboard and external resistor network. An enable pin allows the user to turn the regulator on or off. Furthermore, the LM3500TLX-21/NOPB features an integrated bypass switch that allows the user to bypass the regulator and feed the output directly from the input voltage in applications such as vehicle lighting. The bypass switch can be controlled through an external signal, giving the user the flexibility to drive their application with a dual voltage source.

The LM3500TLX-21/NOPB provides many features that make it a great choice for any application that requires efficient and accurate LED power control. Its wide input voltage range, high switching frequency and excellent load regulation make it an ideal choice for designers looking to add efficient and reliable power management to their applications. Its programmable slew rate, system protection, and soft-start provide better flexibility to the user, while the integrated bypass switch and communication protocol support give users the flexibility they need to connect and control those applications.

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