TPS62103DG4

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	TPS62103
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	500mA
Voltage - Output (Max):	8V
Series:	--
Voltage - Input (Max):	9V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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TPS62103DG4 is a DC-DC buck topology switch-mode power supply (SMPS) regulator specially designed for battery-powered and low-input voltage applications such as rechargers, PDAs, smartphones and other handheld devices. This device is a key component utilized in battery-charged systems when the input voltage is coming from an external source. It is capable of providing a stable output voltage with high efficiency and providing a large output current. It is highly integrated, requiring only a few external components to operate. In addition, the TPS62103DG4 also features power saving and shutdown modes, making it a suitable choice for low-power applications.The working principle of the TPS62103DG4 can be divided into two parts: the control loop and the power stage. The control loop is used to measure the output voltage and adjust the duty cycle of the power stage. The power stage then makes use of a voltage switching technique to achieve the desired output voltage.The power stage of the TPS62103DG4 consists of an internal high-side MOSFET and an internal low-side MOSFET. The high-side MOSFET is used as the main switch while the low-side MOSFET is driven by a PWM signal generated by the control loop in order to provide the duty cycle to achieve the target output voltage. The duty cycle is adjusted by the error amplifier and the switching frequency is determined by a voltage controlled oscillator (VCO).The error amplifier of the TPS62103DG4 is the main component of the control loop. It monitors the output voltage of the device, compares it to the reference voltage and outputs an error signal which is then used by the PWM generator to adjust the duty cycle. The error amplifier\'s reference voltage can be programmed through an external resistor and the PWM switching frequency can be programmed by an external capacitor.The TPS62103DG4 is a highly integrated device which is suitable for many different applications. It can be used to regulate output voltages ranging from 0.78V to 5.5V, with an adjustable switching frequency of up to 2MHz and an input voltage range of 2.25V to 5.5V. Its low power consumption (typical quiescent current of 300nA in standby mode) makes it a suitable choice for many different power saving applications such as handheld and portable devices. Furthermore, its integrated protection features such as thermal shutdown and current limit protection, as well as its integrated under-voltage lockout, make it a reliable device for different applications. In conclusion, the TPS62103DG4 is a DC-DC buck topology switch-mode power supply (SMPS) regulator that is specially designed for battery-powered and low-input voltage applications. It is highly integrated, requiring only a few external components. Furthermore, its adjustable switching frequency allows for different applications, while its low power consumption and integrated protection features make it a reliable choice for different applications.

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