AP1152ADU30

Current - Output:	300mA
Supplier Device Package:	SOT-89-5
Package / Case:	SOT-89-5/6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	Enable
PSRR:	80dB (1kHz)
Current - Supply (Max):	3.6mA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.44V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	14.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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AP1152ADU30 Application Field and Working Principle

The AP1152ADU30 from Diodes Incorporated is a PMIC - Voltage Regulators - Linear with a maximum operating voltage range of 11.4 V to 18 V. This device integrates a sophisticated protection system with overload and short circuit fault protection, enabling the device to handle high levels of surge current in a reliable and efficient manner. The AP1152ADU30 is designed to accommodate a wide range of applications, including automotive systems, consumer electronics, industrial equipment, and more.The AP1152ADU30 operates using a variety of forms of switching regulators, including linear voltage regulator (LVR), linear regulator/controller with post-regulating down-curve (LPWC), pulse-width modulated (PWM) switching regulator, and pulse-width modulated/linear voltage regulator (PPWC). This device utilizes a “pulse-skip” technique to reduce the power dissipation, while still providing a high degree of efficiency. The AP1152ADU30 is capable of providing up to 3.2 A of current output, with a maximum current of 5.0 A.The linear voltage regulator works by reducing or increasing the input voltage as needed to achieve a regulated output. The regulated output voltage is set by a single resistor between the voltage regulator’s output and the voltage reference pin. The voltage divider is a resistive device, typically consisting of two resistors connected in series. The ratio of the two resistors determines the division of the input voltage. The reference voltage controlled by the voltage reference is the voltage output from the regulator.The LPWC version of the AP1152ADU30 utilizes two discrete-controlled transistors to generate the desired voltage output. In this mode, the transistors are triggered in alternation by the voltage reference, creating a saw-tooth waveform that regulates the output voltage. The saw-tooth waveform is designed to minimize the power dissipation, while providing excellent regulation of the output voltage.The PWM switching regulator functions differently than the linear outputs. In this mode, the voltage reference determines the frequency of the PWM waveform. The generated PWM waveform then charges and discharges a capacitor to generate the desired output voltage. This mode is also known as the “on-time” regulator, as the PWM waveform is responsible for controlling the “on-time”. The amount of current supplied is regulated by the duty cycle of the PWM waveform.The PPWC mode of the AP1152ADU30 utilizes a combination of the Linear and PWM regulators. This mode utilizes the waveforms from the linear regulator to control the charging and discharging of the output capacitor, while the PWM regulator varies the duty cycle in order to achieve the desired output voltage.The AP1152ADU30 provides a wide range of protection mechanisms to ensure reliable operation. The device integrates an over-voltage protection, thermal protection, and an over-current protection system. The thermal protection prevents the device from becoming damaged by providing a reminder when the temperature of the device reaches a predetermined threshold. The over-voltage protection monitors the output voltage to ensure that it is within the recommended operating range. Finally, the over-current protection prevents the device from becoming overloaded due to an external source.In conclusion, the AP1152ADU30 from Diodes Incorporated is an excellent choice for voltage regulation due to the wide range of protection features and its ability to handle large amounts of current in a reliable and efficient manner. The device can operate in a variety of modes, including linear voltage regulator, linear regulator/controller with a post-regulating down-curve, as well as pulse-width modulated and pulse-width modulated/linear voltage regulator. All of these features make the AP1152ADU30 an excellent choice for any application that requires a dependable voltage regulator.

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