A8282SLBTR

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Applications:	Converter, Analog and Digital Satellite Receivers
Voltage - Input:	16.5 V ~ 48 V
Number of Outputs:	1
Voltage - Output:	12 V ~ 20 V
Operating Temperature:	-20°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	24-SOIC
Base Part Number:	A8282

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A8282SLBTR Application Field and Working Principle

The A8282SLBTR (Standard Low-Voltage Bidirectional DC/DC Converter Regulator) is a high efficiency bidirectional regulator/DC to DC converter for driving multiple channels of low voltage led string from a single DC power source. It is designed to operate from 6V to 42V input voltage and to provide up to ten outputs which adjust from 0.3V to 10V. Target applications include driving OLED backlight panels, LED driver, router, network switches and servers.

Application Field

The A8282SLBTR can be used for a wide range of applications requiring DC voltage regulation and conversion. Low-voltage LED lighting is a popular application for this device, especially in setups where multiple LED channels of differing voltage levels must be powered. This device can also be used in routers, network switches, and servers as an efficient DC-DC conversion solution.

Internal Structure of A8282SLBTR

The A8282SLBTR has two opposite channels that can be independently controlled. It has a two-stage boosting and bucking topology, and each channel has a top switch, double-ended switch and bottom switch. In addition, each channel is equipped with a limited resistor, over-voltage protection circuit and thermistor.

Working Principle

The A8282SLBTR has two opposite channels that can be independently controlled. Both channels are driven by an on-chip high-frequency PWM step-down converter, ideal diode and an inductor-boost circuit. For each channel, when switching to boost mode, the top switch will turn on and the inductor will store energy into its inductor magnetic field. When switching to buck mode, the bottom switch will turn on and the inductor will output energy. The limited resistor will adjust the maximum inductor current, and the over-voltage protection circuit will protect the device from damage due to over-voltage.

Protection Features

The A8282SLBTR can be protected from over-voltage and under-voltage conditions. It also has an over-temperature limit to prevent damage due to excessive heat. In addition, the integrated limited resistor and over-voltage protection circuit help to protect the device from damage due to high current and voltage.

Conclusion

The A8282SLBTR is an innovative and highly efficient power management IC solution suitable for driving multiple channels of low voltage LED strings from a single DC power source. Its two-stage boosting and bucking topology allows for flexible DC-DC conversion in a wide range of applications. The integrated protection features help to ensure reliability in even the most extreme conditions.

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