RT6259ALGQW

Voltage - Input (Max):	18V
Supplier Device Package:	16-WQFN (3x3)
Package / Case:	16-WFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	650kHz
Current - Output:	3A
Voltage - Output (Max):	7V
Voltage - Output (Min/Fixed):	0.765V
Series:	ACOT™
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The RT6259ALGQW is a share of PMIC – Voltage Registrators – DC DC Switching Registrators. RT6259ALGQW is comprised of two operating channels to two synchronous BOOTs having rectification capability. It can support wide input voltage from 5V to 28V and high-efficiency up to 95%, two Buck synchronous buck converters.It is an advanced voltage regulator IC, capable of providing high current output with low power consumption, replacing an entire switching regulator circuit. The RT6259ALGQW specializes in voltage regulation and has a wide range of applications. There are two buck channels and one LDO channel. The buck channel supports up to 35V@8A and 2.5V to 8V output voltage. The LDO channel provides up to 1.5A@1V to 5V and is suitable for small power application.The device runs at frequencies up to 1.2MHz and also provides a low good, low output ripple, and low standby current. The RT6259ALGQW also integrates various protections such as Over-Current Protection (OCP), Under-Voltage Lockout (UVLO), Over-Temperature Protection (OTP), ESD Protection (ESD), Input Discharge Function (IDF), and Variable Frequency.

Working Principle

The RT6259ALGQW’s circuitry is composed of a flat Voltage Regulation Loop, such as a conventional Buck Voltage Regulator. The Voltage Regulation Loop takes the input voltage and regulates it for specific output voltage. The PWM signal, synchronizes power transistors, within the voltage loop to regulate output.The RT6259ALGQW features two little strain elements, each has Output and Error pins that interface separately to the voltage regulation loop. A PWM signal is generated by these pins, which then switch the power transistors to manage the output voltage of the device. The PWM generator, that monitors the Error pin, provides the switching frequency. RT6259ALGQW then balances the feedback voltage and the target output voltage to establish a stable output voltageThe RT6259ALGQW integrates a high-precision voltage reference, which is a very important component for voltage regulation. This voltage reference is programmed to provide a certain output voltage with a small ripple, good line and load regulation.In addition, the device provides a variety of protection functions. These include over-voltage protection, under-voltage protection, over-temperature protection, input discharge function and a variety of over-current protection.

Application Fields

The RT6259ALGQW is a compact and high-performance voltage regulator with a wide range of applications. It is particularly suitable for POE systems, notebook/desktop PCs, cameras, DTMF tone/dialers, mobile phones, cellular radios, and for any application that requires a high-accuracy or a fast response voltage regulator.In PC systems, the RT6259ALGQW can be used to provide the power supply for the motherboard, system peripherals and graphic cards. The device operates at high efficiency so the system can maximize its electric energy utilization, save energy and lower the temperature in the processing system.For consumer devices, the RT6259ALGQW has strong anti-interference features and a wide range of input voltage. These features prevent the device from sudden drops in the input voltage due to the interference from some wireless signals, and keep the device from engaging any skips in power conversion.In addition, the RT6259ALGQW carries a wide range of load current options to fulfill the specific requirements of electronic device designs.

Conclusion

The RT6259ALGQW belongs to PMIC – Voltage Regulators – DC DC Switching Regulators, with two operating channels to two synchronous BOOTs having rectification capability and it can provide up to 95% efficiency. It is suitable for PC system, consumer device and POE systems due to its wide range of input voltage and load current options. This device also carries many protective features such as OCP, OTP, UVLO, IDF and ESD. The Voltage Regulation Loop takes the input voltage and regulates it for specific output voltage and is capable of providing high current output with low power consumption. In conclusion, the RT6259ALGQW would be a great choice for a voltage regulator for those who want the performance of a dedicated voltage regulator IC. This device has the reliability and convenience to provide the necessary efficiency and power consumption of power-hungry applications.

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