RT9301GJ8

Voltage - Output:	--
Supplier Device Package:	TSOT-23-8
Package / Case:	SOT-23-8 Thin, TSOT-23-8
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Camera Flash
Dimming:	--
Frequency:	--
Current - Output / Channel:	50mA
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	2.8V
Number of Outputs:	3
Internal Switch(s):	Yes
Topology:	--
Type:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - LED Drivers: RT9301GJ8 Application Field and Working Principle

The RT9301GJ8 is a PMIC (Power Management IC) designed for LED driver applications. This device is designed for applications such as LED displays, mobile phone rear keypad lighting, backlighting for electronic induction cookers, electronic game lighting, and other applications which require the use of an LED driver.

Overview of RT9301GJ8

The RT9301GJ8 is a high performance, 4-channel LED driver IC with a wide range of operating voltages of 2.5V to 5.5V. Additionally, it supports up to 8 channels of dimming and 8 levels of current adjustment. This device includes overcurrent and overtemperature protection, as well as programmable thermal shutdown and overcurrent shutdown. Additionally, this IC helps to reduce power consumption by providing efficient output current control and low current consumption.

Application Field of RT9301GJ8

The RT9301GJ8 LED driver chip is ideal for applications such as LED displays, mobile phone rear keypad lighting, backlighting for electronic induction cookers, electronic game lighting, and other applications which require the use of an LED driver.The RT9301GJ8 has an efficient slew rate control (SRC) technology, a continuous brightness control system, and an adjustable frequency that can reduce the EMI (electromagnetic interference). This device also provides an adjustable dead time that can reduce the high and low side current difference. Additionally, this chip features minimal overshoot and undershoot, and uses a bypassing capacitor for high accuracy current determination, providing improved output ripple voltage.

Working Principle of RT9301GJ8

The working principle of the RT9301GJ8 is based on a Pulse Width Modulation (PWM) architecture, which is combined with a linear dimming control technology to achieve wide dimming range. The chip features a wide operating range of 2.5V to 5.5V, and can support up to 8 channels of dimming, as well as 8 levels of current adjustment.The RT9301GJ8 LED driver chip uses an intelligent LED buck register that can precisely regulate the LED current to deliver a consistent output, regardless of the application\'s power supply voltage and LED voltage. The chip includes a slew rate control technology to reduce EMI, as well as an adjustable pulse width modulation frequency to reduce flicker.In addition, the chip provides a thermal shutdown function to protect itself against short-term overcurrent conditions, and a programmable current sense amplifier with an adjustable sense resistor to allow current-loop optimization. The chip also includes an undervoltage lockout (UVLO) detection circuit to protect against improper power supply voltages.

Conclusion

The RT9301GJ8 is a high performance LED driver chip designed for a variety of LED applications. It features an efficient slew rate control technology, a continuous brightness control system, and an adjustable frequency for improved EMI performance. Additionally, this chip features minimal overshoot and undershoot, and uses a bypassing capacitor for high accuracy current determination, providing improved output ripple voltage. This device is ideal for applications such as LED displays, mobile phone rear keypad lighting, backlighting for electronic induction cookers, and other applications which require the use of an LED driver.

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