LT1073CS8-5#TRPBF Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Function:	Step-Up, Step-Down
Output Configuration:	Positive
Topology:	Buck, Boost
Output Type:	Fixed
Number of Outputs:	1
Voltage - Input (Min):	1V
Voltage - Input (Max):	30V
Voltage - Output (Min/Fixed):	5V
Voltage - Output (Max):	--
Current - Output:	1.5A (Switch)
Frequency - Switching:	19kHz
Synchronous Rectifier:	No
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	LT1073

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Introduction to LT1073CS8-5#TRPBF

The LT1073CS8-5#TRPBF is a high-performance and high-efficiency step-down switching regulator IC (Integrated Circuit) manufactured by Linear Technology. It is specifically designed for always-on switched mode power supply (SMPS) applications which require high power density and high efficiency. The LT1073CS8-5#TRPBF features a constant-on-time (COT) control architecture and an on-chip switch with a 2.25A maximum current rating. The constant-on-time (COT) control architecture of the LT1073CS8-5#TRPBF allows it to operate at a fixed frequency between 500KHz and 1MHz. This makes it an ideal choice for applications that require a high efficiency, fast response, and high power density.

Application Fields of LT1073CS8-5#TRPBF

The LT1073CS8-5#TRPBF is ideal for always-on switched mode power supply (SMPS) applications due to its high power density and efficiency. It is suitable for a wide range of applications including notebook computers, mobile phones, GPS systems, set-top boxes, and other portable devices. The LT1073CS8-5#TRPBF is also well suited for powering LEDs, DC motors, and servos. It can provide up to 10A continuous output current and features an adjustable output voltage range of 0.9V to 48V. The LT1073CS8-5#TRPBF can also be used in isolating and DC-DC converter applications. Additionally, the LT1073CS8-5#TRPBF also offers a high level of flexibility with its adjustable power saving sleep mode, programmable output voltage, fast start-up time, frequency synchronization, over-temperature protection, and load current foldback protection.

Working Principle of LT1073CS8-5#TRPBF

The LT1073CS8-5#TRPBF works on the principle of switched-mode power supply (SMPS). In this SMPS, an input voltage is converted into an output voltage. The conversion process is carried out using an on-chip switch, which switches on and off at a pre-determined rate, providing a constant current to the load. The switching frequency of the on-chip switch can be adjusted between 500KHz and 1MHz via an external resistor.The main components of the LT1073CS8-5#TRPBF Step-Down Regulator are an internal power MOSFET, inductor, and output capacitor. The internal power MOSFET turns on and off to allow current to flow through the inductor and create the stepped down output voltage. When the MOSFET is switched on, current flows through the inductor and the output capacitor is charged with high voltage. When the MOSFET is then switched off, the voltage stored in the output capacitor is discharged and the output voltage is regulated. The LT1073CS8-5#TRPBF also features a constant-on-time (COT) control architecture, allowing it to operate at a fixed frequency and maintain a stable output voltage. This COT control architecture ensures a fast response time, high efficiency, and low output voltage ripple.

Conclusion

The LT1073CS8-5#TRPBF switching regulator from Linear Technology is an ideal choice for always-on SMPS applications which require high power density and high efficiency. It can deliver up to 10A continuous output current and offers an adjustable output voltage range of 0.9V to 48V. The LT1073CS8-5#TRPBF also offers a high level of flexibility with its adjustable power saving sleep mode, programmable output voltage, fast start-up time, frequency synchronization, over-temperature protection, and load current foldback protection. The LT1073CS8-5#TRPBF works on the principle of switched-mode power supply, using an on-chip switch and constant-on-time (COT) control architecture to achieve a high efficiency, fast response, and low output voltage ripple.

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