LT3692AIFE#TRPBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LT3692
Supplier Device Package:	38-TSSOP-EP
Package / Case:	38-TFSOP (0.173", 4.40mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	110kHz ~ 2.5MHz
Current - Output:	3.5A
Voltage - Output (Max):	34.2V
Series:	--
Voltage - Input (Max):	36V
Voltage - Input (Min):	3V
Number of Outputs:	2
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT3692AIFE#TRPBF DC DC Switching Regulators Application Field and Working Principle

DC-DC switching regulators are widely used to convert an unregulated DC input voltage to a regulated output voltage, regardless of the input voltage. The LT3692AIFE#TRPBF is a versatile switching regulator device that is designed and optimized for wearables and other portable devices. It features various topologies to meet the various needs of portable devices. This article will give a brief introduction to the application field and working principle of the LT3692AIFE#TRPBF DC-DC switching regulators.

Application Field

DC-DC switching regulators such as the LT3692AIFE#TRPBF have a wide range of applications. They are used in a variety of portable devices such as smartphones, tablets, wearable devices, smart home products, and car navigation systems. Additionally, they are used in high power output applications, such as electric vehicles, Unmanned aerial vehicles, and industrial systems.The LT3692AIFE#TRPBF switching regulators provide reliability under demanding environmental conditions. They are highly efficient and consume lower quiescent current. What’s more, it has wide input range and high switching frequency, allowing it to be used in a range of applications.

Working Principle

When a DC voltage input is applied to the LT3692AIFE#TRPBF switching regulator, the device monitors the output voltage, and adjusts its internal parameters according to the feedback voltage. The switching frequency of the regulator can be set between of 500kHz and 3MHz, depending on the application.The LT3692AIFE#TRPBF switching regulator operates in two distinct modes. The first mode is the pulse width modulation (PWM) mode, which is used for DC voltage conversions that require high fidelity output voltage. The second mode is the pulse frequency modulation (PFM) mode, which is used for DC voltage conversions that require very light load efficiency.In the PWM mode, the internal voltage reference and error amplifier compared the input voltage and output voltage, and generate a control signal for the power switch by a PWM circuit. When the control signal is received, the power switch turns on and drain energy from the input to the output. When the power switch turns off, the current flows from the output to the input by a diode, called the synchronous rectification control. This process is conducted continually to maintain the output voltage.In the PFM mode, the internal circuitry compares the output voltage and the reference voltage, and generate a control signal for the power switch by a PFM circuit. The PFM circuit has a unique feature which allows it to turn off the power switch when the current is low. This reduces the loss of the circuit, thereby increasing the efficiency of the converted voltage. The PFM mode is ideal for power supply applications that require low quiescent current. The LT3692AIFE#TRPBF switching regulator also implements several other features, such as over-temperature protection, short circuit protection and over-voltage protection. All these features improve the reliability and robustness of the application.

Conclusion

The LT3692AIFE#TRPBF DC-DC switching regulators are designed for portable and high power output applications. It features very high switching frequency and wide input voltage range to meet the needs of different applications. The internal circuitry implements various working modes to regulate the output voltage. The device also has several protection features to ensure reliable operation in any kind of environment.

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