A6275SLW-T

Voltage - Output:	4V
Base Part Number:	A6275
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Applications:	--
Dimming:	--
Frequency:	20MHz
Current - Output / Channel:	75.5mA
Series:	--
Voltage - Supply (Max):	5.5V
Voltage - Supply (Min):	4.5V
Number of Outputs:	8
Internal Switch(s):	Yes
Topology:	Shift Register
Type:	Linear
Part Status:	Obsolete
Packaging:	Tube

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PMIC - LED Drivers: A6275SLW-T Application Field and Working Principle

The A6275SLW-T is a pow er Management Integrated Circuit (PMIC) designed for LED drivers. This chip is designed with a wide range of target application such as LED driver in general lighting, LED string lights, LED outdoor lights and LED illum ination light. With its relatively small package size and ease of use, this chip has become an essential component in LED lighting design.This chip offers wide range of features such as variable output current adjustable up to 3.3A, integrated thermal protection, and configurable power management. Specifically for the protection, the A6275SLW-T chipset has over temperature protection, over current protection, over voltage protection and short circuit protection. This chip has total 8 pin in its package and coming in two versions, 12V and 24V. All these features make it a great choice for design in LED lighting.The A6275SLW-T supports a various type of working modes such as current drive and constant voltage modes, depending on the application. The working principle of A6275SLW-T is based on a self-oscillating switch-mode regulator. Its main component includes a high-side MOSFET, gate drivers and a control IC. The gate drivers take an input current and use it to set the MOSFET on and off, while the control IC creates the necessary voltage signals.In the current drive mode, the A6275SLW-T chipset set the LED currents to the desired level by modulating the duty cycle of the high side MOSFET switch. This duty cycle is also determined by the internal sensed current in order to keep a constant LED current. In the constant voltage mode, the amount of current is determined by the load, and the A6275SLW-T chipset regulates the output voltage and maintain it constant. The A6275SLW-T chipset provides efficient power conversion and is easily programmable. The adjustable output current up to 3.3A is made possible by the capability of this chip to accurately control the switching frequency of the high side MOSFET. It also features a low quiescent current with ultra-low ON-state resistance to ensure improved power factor. Moreover, the A6275SLW-T has various technologies to ensure the thermal and electrical safety of the circuit. The built-in temperature-sensing circuit will automatically shut down the MOSFET switching above its Safety Absoprtion Limits (SAL). The over-current protection will ensure overload protection by continue monitoring the output current and limit it when it goes above the set current limit.In conclusion, the A6275SLW-T is a powerful and efficient PMIC for LED driver application. With its wide range of application, adjustable current up to 3.3A, and robust protection features, this chipset can be used as a great addition to any LED lighting design. It is the perfect choice for a reliable and cost-effective solution.

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