LT1913EDD#PBF

Voltage - Output (Min/Fixed):	0.79V
Base Part Number:	LT1913
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	230kHz ~ 2.45MHz
Current - Output:	3.5A
Voltage - Output (Max):	24.25V
Series:	--
Voltage - Input (Max):	25V
Voltage - Input (Min):	3.6V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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DC DC Switching Regulators - LT1913EDD#PBF Application Field and Working Principle

DC DC switching regulators, such as the LT1913EDD#PBF, are designed to provide an efficient and reliable means of regulating the output voltage to an adjustable or fixed voltage with an adjustable current limit. Honing this technology has enabled the regulators to offer a wide range of features while staying highly cost-effective and reliable.The LT1913EDD#PBF is a low dropout, constant-current switching regulator designed to support a wide range of applications and operational requirements. It operates in an adjustable 4V to 30V input voltage range, providing an adjustable 0.8V to 25V output voltage range with a maximum output current up to 5.5A. Its wide input voltage tolerance and adjustable output current limit makes it a great candidate for applications like industrial and consumer electronics, as well as being suitable for automotive and other situations where reliable power delivery is a must.The LT1913EDD#PBF operates in a buck configuration with PWM control, using a CMOS based pulse-width modulator to maintain the output voltage and current limit setpoints. This reduces the need for external components to maintain the output voltage and keeps losses within an acceptable range.When the input voltage drops or the output load increases, the LT1913EDD#PBF switches to a zero voltage (zero current) operating mode which helps ensure reliable operation, while keeping the voltage regulation loop independent from the current limit setting. This helps prevent the output voltage from collapsing and improves the regulator’s ability to maintain the output stability under varying conditions.The PWM control also features a fast transient response, with a 6.5ns minimum turn-on and turn-off delay, providing instant response to sudden load or line dips. This helps ensure that the output voltage is regulated in realtime, even under the most strenuous operating conditions.Other features of the LT1913EDD#PBF include an adjustable soft start for ramping up the output voltage, as well as a UVLO (Under Voltage Lockout) and TSD (Thermal Shutdown) functions which shut down the regulator when the input voltage drops to 6V and the junction temperature exceeds 150°C respectively. These features keep the regulator in safe operating conditions and help protect itself and the connected components from over-stressing.In conclusion, the LT1913EDD#PBF is a cost-effective and reliable DC DC switching regulator from Linear Technology, suitable for use in various applications where reliable voltage regulation is a must. Its features, such as soft start, UVLO and TSD, make it an ideal choice for a variety of industrial and consumer electronics.

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