RT2518GQW

Voltage Dropout (Max):	0.35V @ 1.2A
Supplier Device Package:	8-WDFN (3x3)
Package / Case:	8-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	63dB ~ 56dB (120Hz ~ 1kHz)
Current - Quiescent (Iq):	1.5mA
Current - Output:	1.2A
Series:	--
Voltage - Output (Max):	5.5V
Voltage - Output (Min/Fixed):	0.5V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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RT2518GQW Application Field and Working PrincipleRT2518GQW is a high-performance single-phase buck step-down voltage regulator from Richtek. With built-in Power-Good indicator, the regulator has high efficiency, fast transient response and tight accuracy over the operating temperature range. The device offers adjustable output voltage, output short circuit protection, dynamic overcurrent protection and thermal shutdown protection. It is suitable for high voltage switching supplies and DC-DC converters.The RT2518GQW is a non-synchronous buck step-down converter providing a high level of performance and robustness. Its output voltage is adjustable between 0.9V and 5.6V and its maximum load current is 600mA. The device includes dynamic overcurrent protection, thermal protection and output short circuit protection. Its wide operating temperature range, fast transient response, high accuracy of up to ±1.5%, and low no-load supply current allow it to be used in a variety of power systems applications.The RT2518GQW supports PGOOD indicator output and synchronization of switching frequency. It can work in different operating modes such as PWM, PFM and DCM modes, allowing it to meet the efficiency, performance, and size requirements of next-generation digital power systems.The RT2518GQW device is constructed of components including a control circuit, an error amplifier, a driver circuit, an inductor and a Schottky diode. The control circuit is an internal variable over-temperature circuit that is used to adjust the output voltage of the device. It also provides an external reference voltage to the error amplifier which controls the output voltage from the device.The driver circuit is composed of an NPN transistor and an open-drain output which can be used for synchronizing the external clock with the system frequency. The inductor is used to reduce output ripple. The Schottky diode is employed to recover the energy stored in the inductor when the switch is off.The RT2518GQW is used in various applications such as DC-DC converters, portable electronic devices, battery-powered systems and personal computers. It is especially well-suited for power systems for the next-generation digital products which require high performance, strong durability and low external component count.In conclusion, RT2518GQW is a high-performance single-phase buck step-down voltage regulator from Richtek. It includes built-in Power-Good indicator, adjustable output voltage and provides excellent performance and robustness. The device is suitable for a variety of applications such as DC-DC converters, personal computers, battery-powered systems and portable electronic devices. It is an ideal choice for power systems of digital products.

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