RT9068-25GSP

Voltage Dropout (Max):	0.23V @ 50mA
Supplier Device Package:	8-SOP-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	65dB (50mA)
Current - Quiescent (Iq):	40µA
Current - Output:	50mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V
Voltage - Input (Max):	60V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

PMIC (Power Management Integrated Circuit) is an essential component to almost all electronic systems. It is a primary controller to regulate and monitor the power supply and distribution within a system. Regulators is one of the most important subtype in PMIC, and Linear Voltage Regulator (LVR) is one of the regulators most often used. RK9068-25GSP, developed by Richtek, is a PMIC product type of LVR that provides a highly integrated, auto-tracked solution for power supply and adaptive high-efficiency for applications of a wide range of products ranging from industrial devices to consumer electronics.

Working Principle

RK9068-25GSP circuit consists of a current sense amplifier, voltage reference, voltage amplifier, and PWM controller. Firstly, the output voltage of the circuit will be determined by a voltage reference bipolar line and an adjustment of target voltage by an external resistor. When the current consumption of the load increases and the output voltage decreases, the error amplifier will produce an error signal and increase the pulse-width modulation (PWM) output width. Then, the output voltage increases and control the load current consumption. As the load current is reduced and the output voltage increases, the error amplifier will decrease the PWM width and vice versa. This is the basic principle as to how the LVR will be operating.

Application Field

RK9068-25GSP LVR is mainly used in voltage regulators, point-of-load applications (PoL), battery chargers, LCD TVs, Blu-ray Disc players, digital media players and portable disk players. The device\'s high integration and high efficiency feature helps to reduce the size of the overall application and increase the efficiency of the whole system. Moreover, the device has auto-tracking feature to provide power efficiency regardless of the output voltage range which makes its application even wider.All in all, RK9068-25GSP is a formidable integrated power supply device with a cost-effective solution for voltage regulation for consumer electronics device, industrial machineries and other applications. In addition, its ease of design, low external components count, highly integrated and auto-tracking function enable the device to be a popular choice for the voltage regulator application.

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