LM3435SQX

• Sequential RGB driving mode
• Low component count and small scale solution
• Stable with low ESR such as ceramic capacitors without loop compensation requirements
• Fast transient response
• Programmable converters switch at frequencies up to 1MHz
• I would like to interface with the MCU 2 C bus
• Switching current limit protection at the top of the mountain
• LED fault detection and reporting pass I 2 C bus

illustrate

The LM3435, a synchronous rectified non-isolated flyback converter, has all the features needed to achieve an efficient and cost-effective RGB LED driver. Unlike traditional flyback converters, the LED jumpers are internally passed to the corresponding LED pin element at the VOUT pin and the VIN pin. Therefore, the voltage in the LED can be higher, equal to or greater than the low voltage of the input power supply.

LEDs with load currents up to 2A are with voltages ranging from 2.0V to 4.5V LEDs. The integrated N-channel MOSFET master, P-channel synchronous MOSFET and three N-channel current-regulated low-pass switches allow for the number of components, reducing complexity and reducing board size. The LM3435 is designed to operate with exceptionally good ceramic output capacitors with low output ripple voltage. Loop compensation does not require a fast load transient response result. The drive sequence of the non-overlapping RGB LEDs is controlled by an individual. output voltage, so it is possible to optimize different LED forward voltages when in non-overlapping periods. I 2 The C interface simplifies programming of personal RGB LED currents up to 1,024 levels per channel.

The LM3435 is available in a thermally enhanced LLP-40 package.

Key specifications:

• Supports up to 2A of LED current
• Typical ± 3% LED current accuracy
• Integrated N-channel and P-main channel synchronous MOSFETs
• 3. The integrated N-channel current is through the regulation switch
• The LED current is programmable via I 2 C bus independent
• Input voltage range 2.7V - 5.5V
• Thermal shutdown
• Heat-resistant enhanced LLP - 40 package

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• Lithium-ion battery / USB power RGB LED driver
• Pico/RGB LED handheld projector