TC1303B-1H0EMFTR

Voltage/Current - Output 3:	--
Base Part Number:	TC1303B
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	2.7 V ~ 5.5 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	2.6V, 300mA
Voltage/Current - Output 1:	1.375V, 500mA
Frequency - Switching:	2MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The TC1303B-1H0EMFTR is a highly integrated, low-emission, smart medium-voltage linear regulator that was designed to increase current efficiency and reduce energy waste. It has a fixed output voltage of 3.3 V, a wide input voltage range of 2.8 V to 6 V, and a maximum output current of 1.8 A. The TC1303B-1H0EMFTR includes an integrated soft start boost circuit, which can reduce input current during start-up, allowing for extremely low input surge currents. It also includes integrated MOSFETs, allowing for high-efficiency switching regulation when operating at high input voltages. Lastly, it has the ability to identify and properly drive N-channel MOSFETs when operating in boost or buck-boost configurations.

Application Field

The TC1303B-1H0EMFTR is ideal for use in equipment such as mobile phones, PDAs, and other portable applications that require low noise, efficient energy consumption, and high-reliability operation. It is particularly well-suited for applications where input and output voltages are substantially different. It can also serve as an energy-efficient, low generation of electromagnetic interference (EMI) regulator. The TC1303B-1H0EMFTR can be used in a variety of applications, including chargers, handheld audio players, digital still cameras, external storage media and digital audio players. It can also be used in industrial or automotive applications, such as protectors and displays.

Working Principle

The TC1303B-1H0EMFTR is capable of providing either linear or switching regulation to maintain a constant output voltage. When using linear regulation, current flows from the input power source through the linear regulator, which will then output the desired regulated voltage. In switching regulation, the regulator switches on and off, allowing only a portion of the input voltage to pass to the output. This method is more efficient than linear regulation, as less current is flowing through the regulator, resulting in less energy wasted, and consequently less heat produced. The integrated boost circuit also helps to increase efficiency, as it reduces input surge currents and allows the Regulator to operate at higher input/output voltages. Furthermore, the Regulator’s MOSFETs will provide a higher efficiency when operating at higher input voltages.

Conclusion

The TC1303B-1H0EMFTR is a highly integrated, low-emission, smart medium-voltage linear regulator that was designed to increase current efficiency and reduce energy waste. It has a fixed output voltage of 3.3 V, and a wide input voltage range of 2.8 V to 6 V. It is ideal for use in equipment such as mobile phones and PDAs, and can also be used in industrial or automotive applications. The TC1303B-1H0EMFTR can provide either linear or switching regulation to maintain a constant output voltage. It is also capable of identifying and properly driving N-channel MOSFETs when operating in boost or buck-boost configurations. The integrated boost circuit can reduce input current during start-up, allowing for extremely low input surge currents and higher efficiency.

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