LT3973HDD#PBF

Voltage - Output (Min/Fixed):	1.21V
Base Part Number:	LT3973
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	195kHz ~ 2.15MHz
Current - Output:	750mA
Voltage - Output (Max):	24V
Series:	--
Voltage - Input (Max):	42V
Voltage - Input (Min):	4.2V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LT3973HDD#PBF Application Field and Working Principle

The LT3973HDD#PBF is a DC/DC switching regulator and is part of the PMIC - Voltage Regulators - DC DC Switching Regulators family. It is a highly integrated, high efficiency, multi-output Synchronous buck regulator that offers many features for powering devices with a single, compact package.It includes a high-side switch, current-sense amplifier, current-limit circuit, feedback circuitry, and a low-side switch. The LT3973HDD#PBF is designed to provide up to 6A of continuous output current over a wide range of input voltage. It is also capable of delivering up to 6A of current at a peak load of 12A, ensuring that the system can deliver sufficient power to meet peak-load requirements.The LT3973HDD#PBF is suitable for applications where high efficiency is required, such as powering high-end graphics cards and other electronics within a system. It offers a variable voltage output ranging from 0.8V to the input voltage and is capable of delivering a peak load efficiency of up to 95%. It also includes an over-temperature protection circuitry, allowing it to protect against potential system damage should the temperature of the system rise too high.The LT3973HDD#PBF has a wide operating temperature range of -40°C to 85°C and is able to operate over a wide range of input voltages. The wide operating temperature range makes it suitable for use in demanding environments. The output voltage is adjustable and synchronized to reduce switching noise and electromagnetic interference.The LT3973HDD#PBF uses a current-mode control architecture to optimize efficiency, reduce external component count and to provide a fast transient response to load variations. It also uses an internal PLL to provide synchronous rectification and an adjustable current-sharing feature to allow multiple ICs to be used in parallel. The LT3973HDD#PBF also provides a wide range of features for protection against over-voltage, over-current and thermal protection. It includes a temperature-shutdown feature that disables the supply output when the die temperature exceeds a preset threshold. The Over-Voltage (OVP), Over-Temperature (OTP), and Over-Current Protection (OCP) features protect the LT3973HDD#PBF and the system from damage due to over-voltage and over-current conditions.The LT3973HDD#PBF is a high-performance, low-cost solution that is ideal for powering demanding applications. It can provide up to 6A of continuous output current, offers adjustable output voltage, and is capable of delivering peak loads of up to 12A. The flexible protection features provide effective system protection, while the wide operating temperature range makes it suitable for wide range of environments. at a peak load of 12A, ensuring that the system can deliver sufficient power to meet peak-load requirements.

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