RT8064ZSP Integrated Circuits (ICs)

Voltage - Input (Max):	5.5V
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)
Synchronous Rectifier:	Yes
Frequency - Switching:	200kHz ~ 2MHz
Current - Output:	2A
Voltage - Output (Max):	5V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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RT8064ZSP is a high-performance integrated power solution developed by Richtek. It is a synchronous boost converter suitable for 5.5V input low power applications. It contains a low consumption DC/DC buck controller with internal power MOSFETs for energy saving, and integrates selectable closed loop control, adjustable current limit and over voltage protection. The RT8064ZSP can output up to 800mA of output current and is suitable for high efficiency applications requiring 5.5V input voltage and up to 2.5V output voltage.Application FieldThe RT8064ZSP is suitable for a variety of 5.5V input, low power applications such as USB charging, battery charging, and wearable device charging. The synchronous mode of the RT8064ZSP helps provide good efficiency over wide input and output voltage range. The device includes many features such as soft start, current limit, and Thermal Shutdown protection to keep the system safe. The device also includes several fixed operating frequencies to make design easy.Working PrincipleThe RT8064ZSP operates in the synchronous mode, meaning it uses a voltage doubler to increase its input voltage to the required output voltage. It uses two internal switches, an N-channel power MOSFET and a P-channel MOSFET, and two external Schottky diodes to supply the load from the output capacitor. The boost operation is regulated by the control loop. The error amplifier monitors the output voltage and adjusts it with a current source. The current source turns the N-channel MOSFET on or off based on the voltage feedback, allowing the user to set the output voltage.The RT8064ZSP also includes a power sense resistor to control the output current. The current through the sense resistor is proportional to the output current and is monitored by the internal current limit circuitry. This circuitry will limit the output current to protect the device from overload or short-circuit conditions.The RT8064ZSP can be used in many applications including USB charging, battery charging, and wearable device charging. The device provides a high-efficiency conversion, and its features such as adjustable current limit and over voltage protection, enable it to supply output power in a range of load conditions. With excellent current and voltage control capabilities and a high output current range, the RT8064ZSP is an ideal choice for various 5.5V low power applications.

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