LT1373CS8#TRPBF

Voltage - Output (Min/Fixed):	1.245V
Base Part Number:	LT1373
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	250kHz
Current - Output:	1.5A (Switch)
Voltage - Output (Max):	35V (Switch)
Series:	--
Voltage - Input (Max):	30V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Cuk, Flyback, Forward Converter, SEPIC
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LT1373CS8#TRPBF is a member of the Linear Technology family of DC-DC switching regulators, designed for voltage regulation and control of power systems. It offers ultra-low quiescent current and low operating temperature, features that make it an ideal choice for portable and industrial applications. This section discusses the application field of the LT1373CS8#TRPBF and the working principle behind its operation.

Application Field

The LT1373CS8#TRPBF is an excellent choice for portable and industrial applications that require voltage regulation and control of power systems. The ultra-low quiescent current (IQ) of 1μA allows the regulator to maintain a smaller footprint and improved efficiency at low-load. Combined with its low operating temperature, the LT1373CS8#TRPBF is an ideal solution for power management in products with limited space, such as mobile handheld devices and embedded systems.The LT1373CS8#TRPBF can also be used in automotive and sensor-based applications, as the low quiescent current allows for optimal operation even when the input supply voltage is fluctuating. The device can also be used in adverse conditions and operates at an ambient temperature of up to +125°C and is available in a 6-lead SOT-23 package and a 6-pin ThinSOT-23 package, making it suitable for a wide range of automotive, industrial and consumer applications.

Working Principle

The LT1373CS8#TRPBF is a step-down switching regulator that features a fixed frequency nominal 1.2MHz switching frequency. The device employs a current mode topology, employing an internal voltage reference, an error amplifier and a comparator to regulate the output voltage.During operation, the device monitors the output voltage of the power supply and compares it to the internal reference voltage to detect a voltage discrepancy. If the detected voltage discrepancy reaches a predefined threshold, the internal control circuitry will then switch between an ON and OFF state, thus changing the current inside the power supply and allowing it to regulate the output voltage. The LT1373CS8#TRPBF is designed such that the ON and OFF time of the switch is matched to the output current and to the enable output voltage. This allows the device to ensure the desired output regulation and minimal power losses due to switching losses, as the output voltage is regulated within the predefined voltage range.

Conclusion

The LT1373CS8#TRPBF is a member of the Linear Technology family of DC-DC switching regulators, designed for voltage regulation and control of power sytsems. It offers ultra-low quiescent current and low operating temperatures which make it an ideal choice for portable and industrial applications, automotive and sensor-based applications. The device operates at an ambient temperature of up to +125°C and is available in a 6-lead SOT-23 package and a 6-pin ThinSOT-23 package, making it suitable for a wide range of automotive, industrial and consumer applications. The LT1373CS8#TRPBF employs a current mode topology, using an internal voltage reference, an error amplifier and a comparator to regulate the output voltage. The device is designed such that the ON and OFF time of the switch is matched to the output current and to the enable output voltage, thus allowing the device to ensure the desired output regulation and minimal power losses.

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