AP3406AKT-ADJTRG1

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Down
Output Configuration:	Positive
Topology:	Buck
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	2.5V
Voltage - Input (Max):	5.5V
Voltage - Output (Min/Fixed):	0.6V
Voltage - Output (Max):	5.5V
Current - Output:	800mA
Frequency - Switching:	1.1MHz
Synchronous Rectifier:	Yes
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Supplier Device Package:	TSOT-23-5

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AP3406AKT-ADJTRG1 application field and working principlePMIC - Voltage Regulators - DC DC Switching RegulatorsThe AP3406AKT-ADJTRG1 is a three-terminal step-down regulator with synchronous rectification, high efficiency and low standby current. In order to provide higher efficiency, the AP3406AKT-ADJTRG1 uses synchronous rectification technology, and it includes an internal voltage regulator, allowing the internal MOSFETs to automatically ramp down the output voltage as the load increases. With a wide input voltage range of 4V~20V and an adjustable output voltage of 0.8V~16V, AP3406AKT-ADJTRG1 can meet the needs of various applications.The AP3406AKT-ADJTRG1 integrates a high-performance voltage-mode PWM control circuitry, which can adjust the switching frequency to 200KHz. This high frequency switching reduces the size of filter components and the output ripple, making the AP3406AKT-ADJTRG1 suitable for wide range of applications. The AP3406AKT-ADJTRG1 also integrates advanced OCP/OVP/UVP/OTP protection circuits and an accurate voltage regulation constant frequency hysteretic architecture, making it a stable and reliable DC-DC regulator.AP3406AKT-ADJTRG1 application field covers a wide range, such as industrial, automotive and audio systems, computer and communication equipment, notebook computers, LCD monitors and LED drivers.AP3406AKT-ADJTRG1 working principle is as follow. The AP3406AKT-ADJTRG1 is controlled by a voltage-mode constant frequency PWM control circuit, so the main voltage building loop includes the output voltage, error amplifier, error amplifier compensation, and internal MOSFETs. Under the action of compensation circuit, the voltage of error amplifier is kept in keeping a constant value, even if the output current, temperature or other parameters change. At the same time, the external FB capacitor and resistor network can be used to adjust the output voltage.When the voltage at EN pin rises above the input voltage, the AP3406AKT-ADJTRG1 enters the standby mode, reducing the switching frequency and current consumption. When the voltage at EN pin drops below the input voltage, the AP3406AKT-ADJTRG1 exits the standby mode and begins to operate normally.AP3406AKT-ADJTRG1 is an ideal choice for replacing linear regulators and other inefficient switching regulators, including many of its advantages such as simple design, low cost, high efficiency and small power consumption. With the advantages of high performance, AP3406AKT-ADJTRG1 provides the over-current protection and multiple-protection functions to protect the system, making it perfect for many modern applications.

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