LT8303IS5#TRMPBF

Voltage - Output (Min/Fixed):	--
Base Part Number:	LT8303
Supplier Device Package:	TSOT-23-5
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	7kHz ~ 350kHz
Current - Output:	450mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	100V
Voltage - Input (Min):	5.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Flyback
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LT8303IS5#TRMPBF is a monolithic synchronous step-down DC/DC switching regulator with an integrated high-side and a low-side power MOSFET, providing excellent performance in a tiny 6-lead surface mount package. Its features make it ideal for powering high performance low voltage logic and microprocessor systems, especially in distributed power architectures.The LT8303IS5#TRMPBF is in a tiny 6-lead surface mount package and uses a high-performance current mode controller with an integrated 66-mΩ power switch and an adjustable 0.9 V to 5 V output. The device also has a maximum operating frequency of about 1 MHz, which allows excellent transient response and fast loop response. It also has a very high switching frequency, which reduces the size of the external components.The LT8303IS5#TRMPBF has a built-in current limit feature and an internal POR (power-on reset) protection circuit. It also integrates high-side and low-side power MOSFETs, allowing the device to have a very small form factor and enabling simplified board layout and design.The LT8303IS5#TRMPBF can be used in a variety of applications, including portable beacons requiring small size and improved efficiency, medical equipment, and many other low voltage digital power applications. This device is also ideal for powering low voltage logic and microprocessor systems in distributed power architectures.The LT8303IS5#TRMPBF is based on a topology called synchronous buck regulator and operates in the following manner: the voltage on the output is compared to a reference voltage (Vref) by an error amplifier, through a Feedback network. The error amplifier output is then converted, by the power converter controller, into a boost current for the integrated power MOSFETs. When the inductor current, sensed by the current sense circuit, reaches a predetermined maximum value, the power MOSFET switches off and the charge stored in the inductor is transferred to the output capacitor. The output of the error amplifier will then adjust itself to reach the desired output voltage, and the current in the inductor will repeat the same cycle when the power MOSFETs turn on again. The LT8303IS5#TRMPBF is also featured with advanced protection circuitry and fault capabilities. It has under voltage lockout (UVLO) built in, which is easily programmable, and two over-current protection (OCP) inputs that can be configured for fixed or tri-level protection. There is also thermal shutdown and output short-circuit protection built in, ensuring maximum safety and reliability.Overall, the LT8303IS5#TRMPBF is an ideal device for powering high performance low voltage logic and microprocessor systems in distributed power architectures. The device offers an array of features, including an input voltage range of 4.5 V to 36 V, adjustable output voltage of 0.9 V to 5.5 V, and up to 1-MHz switching frequency that allows excellent transient response. It also offers a 3-A OCP threshold and a low output voltage ripple, making it suitable for sensitive applications. Besides, the device provides multiple protection features and has a small form factor, resulting in simplified board layout and design. The LT8303IS5#TRMPBF is available in two versions, versions with and without an enable pin. The device can be used with extreme ease due to the built in enable pin and offers a degree of flexibility in operating frequencies. The device also has a temperature range from -40°C to 125°C and a 5-ms typical enable response time, making it more suited for current applications. The device also has a 6-lead surface mount package and its high switching frequency allows for very small external components.In conclusion, the LT8303IS5#TRMPBF is an excellent device for powering high performance low voltage logic and microprocessor systems in distributed power architectures. The device offers an array of features, including an input voltage range of 4.5 V to 36 V, adjustable output voltage of 0.9 V to 5.5 V, and up to 1-MHz switching frequency. It also provides multiple protection features, temperature range from -40°C to 125°C and a 6-lead surface mount package. The device’s high switching frequency allows for very small external components, making it an ideal choice for powering low-voltage, sensitive applications.

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