AAT1153IDE-0.6-T1 Integrated Circuits (ICs)

Voltage - Input (Max):	5.5V
Supplier Device Package:	10-TDFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	1.2MHz
Current - Output:	2A
Voltage - Output (Max):	5.5V
Voltage - Output (Min/Fixed):	0.6V
Series:	SwitchReg™
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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AAT1153IDE-0.6-T1 Application Field and Working Principle

The AAT1153IDE-0.6-T1 is an advanced single-output 3.0V to 5.5V, 0.6A non-synchronous step-down DC-DC converter with integrated FET switch technology. It is designed with advanced features that makes it ideal for powering applications that require the utmost in efficiency and power management.

Application Field

The AAT1153IDE-0.6-T1 is used in a variety of applications ranging from cellular phones and PDAs to other portable devices such as MP3 players and digital cameras. It also finds application in automotive electronics, industrial instrumentation, computer peripherals, and other battery-powered applications. In particular, it is the perfect solution for power-intensive applications that require high efficiency and noise-immunity, such as GSM handsets, digital cameras, and other portable devices.

Working Principle

The AAT1153IDE-0.6-T1 is a buck converter, meaning that it functions as a step-down transformer, allowing different voltages to be stepped down to a lower voltage. This is done by regulating the current through the switches, which is determined by the output voltage set point. The switch transistors are placed in series with the input and output of the device. The input voltage is applied to the device and the switches are turned off and on in sequence to achieve a regulated output voltage.The AAT1153IDE-0.6-T1 employs a Pulse Frequency Modulation (PFM) technique to reduce ripple, minimize noise, and improve efficiency. To ensure stable operation, the PFM control scheme relies on an external resistor connected to the output of the device. This resistor monitors the output voltage and regulates the frequency of the pulses applied to the switches, thereby maintaining the specified output voltage across the load.

Conclusion

The AAT1153IDE-0.6-T1 is an advanced single-output 3.0V to 5.5V, 0.6A non-synchronous step-down DC-DC converter with integrated FET switch technology. It is designed to maximize efficiency and power management, making it ideal for powering applications such as cellular phones, PDAs, MP3 players, digital cameras, automotive electronics, and industrial instrumentation. The device utilizes PFM techniques to reduce ripple, minimize noise, and improve efficiency, relying on an external resistor to monitor the output voltage and regulate the frequency of the pulses applied to the switches.

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