LT3437IDD#PBF

Voltage - Output (Min/Fixed):	1.25V
Base Part Number:	LT3437
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz
Current - Output:	500mA (Switch)
Voltage - Output (Max):	57V
Series:	--
Voltage - Input (Max):	60V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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PMIC - Voltage Regulators - DC DC Switching Regulators

The LT3437IDD#PBF is a buck converter designed for supplying power at high efficiency in situations requiring densely packed circuits. It is an updated version of the LT1834 device, featuring a variety of enhancements that improve efficiency, reduce power consumption, and increase the number of switching frequency options.The LT3437IDD#PBF is a member of Linear Technology’s family of DC-DC switching regulators. It utilizes a buck converter topology which boosts efficiency by regulating input voltage to a lower output voltage. The buck converter can support input voltages up to 24V while maintaining the output in the range of 0.6V to 5.5V. It possesses an internal oscillator with an adjustable switching frequency between 200kHz to 1MHz. The part features fast transient response, low quiescent current of just 425µA, and a shutdown current of 25µA. Output accuracy of ±2.3%, coupled with comprehensive error correction allow for maximum accuracy and reliability.The LT3437IDD#PBF has a wide range of practical applications, be it industrial or consumer applications. The device can be used in any situation that needs a neatly packed circuit that promotes energy efficiency, most inspiringly in applications where small form factor and higher power efficiency are paramount, such as laptop adapters, mobile phones, tablets, and other mobile applications. It is also ideal for applications where extended battery life is desired, such as wearable electronics, wireless peripherals, and in wireless charging systems. The LT3437IDD#PBF also pairs well with high voltage/high current sources, such as in automotive and automotive telematics systems.The operating principle behind the LT3437IDD#PBF is based on the buck converter topology. The buck converter regulates the input voltage to a lower output voltage. The basic idea behind this type of converter is the use of a switch to periodically connect and disconnect the input voltage from the output in order to regulate the voltage levels. In a buck converter, when the switch is in the ON state, a voltage-drop is induced across the switch, resulting in the input voltage having a lower level than the output voltage. When the switch is in the OFF state, current is instead fed through the inductor and diode, thus allowing the output voltage to maintain its level.The LT3437IDD#PBF buck converter features an adjustable switching frequency from 200 kHz to 1 MHz, allowing for faster response times and more control over noise generation. The device also features an adjustable voltage output range of 0.6V to 5.5V, and comes with an accurate output voltage ±2.3%. The LT3437IDD#PBF is able to provide an output accuracy of up to ±2.3%, thanks to its comprehensive error correction system, as well as to its low quiescent current of 425µA, which helps increase overall efficiency. Additionally, the device comes with a shutdown current of just 25μA, enabling longer battery life and lower power consumption in all applications. The switching frequency can be adjusted to match the load requirements of any application. The LT3437IDD#PBF also features a variety of protection features to prevent damage due to excessive current or temperature, making it an ideal choice for safety-critical applications.In conclusion, the LT3437IDD#PBF is an ideal solution for densely packed circuits requiring energy efficient power supplies. Featuring an adjustable switching frequency from 200kHz to 1MHz and an adjustable output range from 0.6V to 5.5V, the device provides an output accuracy of up to ±2.3%, as well as comprehensive protection features and an ultra-low quiescent current of 425µA. With all these features and more, the LT3437IDD#PBF fits a wide range of industrial and consumer applications, including laptop adapters, mobile phones, tablets and other mobile devices, wireless peripherals, wireless charging systems, and automotive telematics systems.

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