MAX8930EWJ+T

Voltage - Output:	--
Base Part Number:	MAX8930
Supplier Device Package:	49-WLP (3.15x3.15)
Package / Case:	49-WFBGA, WLBGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Applications:	Backlight
Dimming:	PWM
Frequency:	4MHz
Current - Output / Channel:	25.6mA
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	2.7V
Number of Outputs:	11 + 3LDOs
Internal Switch(s):	Yes
Topology:	Switched Capacitor (Charge Pump)
Type:	DC DC Regulator
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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MAX8930EWJ+T Application Field and Working PrinciplePower management integrated circuit (PMIC) - LED drivers are widely used in various applications such as automotive, consumer, and medical. The MAX8930EWJ+T LED driver IC from Maxim Integrated is a regulated LED driver IC specifically designed for driving high power LED chains. Introduction to MAX8930EWJ+T The MAX8930EWJ+T LED driver IC from Maxim Integrated is a regulated LED driver IC specifically designed for driving high power LED chains. It is a monolithic charge-pump based DC/DC converter with integrated switching or linear regulator. The MAX8930EWJ+T is a very versatile device as it can operate either as a low-dropout (LDO) or as a DC-DC converter, allowing it to be used in a wide variety of applications. The device provides excellent ripple noise performance and low thermal resistance. The MAX8930EWJ+T is designed to drive up to 5 strings of LEDs, each with up to 20 LEDs in series. It is available in a QFN-32 package with integrated over-voltage, over-current and thermal protection, as well as integrated low-battery monitoring and power limiting functions. The device operates from a 3.0V to 24V input voltage range and can supply up to 1A current per channel. Working Principle of MAX8930EWJ+TThe MAX8930EWJ+T is a monolithic charge-pump based DC/DC converter integrated with a linear regulator. The device consists of an switched capacitor DC/DC converter and this provides a voltage-step-down function as required in many LED applications. The step-down voltage can be set with a few external components, and the MAX8930EWJ+T automatically adjusts itself for different LED strings with the number of LEDs in the string.The MAX8930EWJ+T also contains a linear regulator which regulates the output of the switched capacitor across the entire input voltage range. This helps to ensure that the current output is maintained even when the voltage falls beyond the legal range. The MAX8930EWJ+T also contains a soft-start circuit which increases the voltage slowly to prevent any in-rush current.Application Field The MAX8930EWJ+T LED driver IC is widely used in automotive, consumer, and medical applications. The device can be used in lighting applications such as LCD or LED back-lighting, automotive dashboards, exterior lighting and indicators, and can also be used for LCD displays in consumer devices. The MAX8930EWJ+T is also widely used in medical devices due to its high efficiency and fast response time. In addition to its versatility in lighting applications, the MAX8930EWJ+T is also used as a load controller in battery packs as it can accurately regulate current over its entire operating range. Conclusion The MAX8930EWJ+T LED driver IC from Maxim Integrated is a versatile regulated LED driver IC designed to drive up to 5 strings of LEDs with up to 20 LEDs each. The device is provided with integrated over-voltage, over-current, and thermal protection as well as integrated low-battery monitoring and power limiting functions. In addition, the MAX8930EWJ+T provides excellent ripple noise performance, low thermal resistance and a wide range of applications in various fields such as automotive, consumer, and medical.

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