LTC1682IMS8#TRPBF

Voltage - Output (Min/Fixed):	2.5V
Base Part Number:	LTC1682
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	550kHz
Current - Output:	50mA
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	4.4V
Voltage - Input (Min):	1.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to the LTC1682IMS8#TRPBF

The LTC1682IMS8#TRPBF is a low-cost, high-performance DC-DC switching regulator. It offers a broad range of features, including adjustable output voltage and current, low average output voltage ripple, active current limiting, and short circuit protection circuitry. The LTC1682IMS8#TRPBF provides an economical solution for portable, battery-operated applications, such as notebook and laptop computer and PDA power management, as well as industrial and automotive electronics.

Application Field and Working Principle

The LTC1682IMS8#TRPBF is a switching regulator designed for applications needing a low-power, low noise, and efficient power supply solution. It is suitable for use in notebook and laptop computers, PDAs, and other portable battery-powered devices. The device features an adjustable output voltage, low output ripple, low minimum load current and active current limiting for added protection.The LTC1682IMS8#TRPBF features an adjustable switching frequency of up to 750KHz and a wide input voltage of up to 42V. It has an output voltage adjustable from 0.6V to 6V and an output current ranging from 0 to 5A. A built-in active current limitation circuit can support short-circuit protection, while the synchronous rectifier architecture enables high efficiency with low input and output noise.The LTC1682IMS8#TRPBF utilizes a switching frequency control circuit to allow the output voltage, switching frequency and output current to be adjusted via external resistors. This allows the user to fine-tune the output voltage and set the current limit that is necessary for maximum efficiency in the given application.The LTC1682IMS8#TRPBF uses a variable frequency, fixed-duty cycle synchronous PWM converter architecture. A bipolar PNP transistor is used to provide the switching element and a pair of dedicated comparators are used to limit the output voltage. An external resistor is used to set the output voltage as well as to program the switching frequency and the output current limit.

Features and Benefits

The LTC1682IMS8#TRPBF offers several advantages, including an adjustable output voltage, low-ripple output, active current limiting, and short-circuit protection circuitry. The adjustable output voltage enables the device to be used in a wide range of applications and the output current limit provides over-current protection. The low-ripple output voltage helps to reduce audible noise and EMI emitted from the device, making it suitable for applications with stringent noise requirements.The LTC1682IMS8#TRPBF also features a wide input voltage range of up to 42V, and is capable of delivering up to 5A of continuous output current. The low minimum load current ensures the robust operation of the device and the efficiency of the device is well maintained even at very light load current.

Conclusion

The LTC1682IMS8#TRPBF is an ideal solution for applications that require low-cost, high performance switching regulator. Its adjustable output voltage and active current limiting capabilities make it suitable for use in a wide range of portable, battery-operated applications, such as notebook and laptop computer and PDA power management, as well as industrial and automotive electronics. The wide input voltage range, low-ripple output voltage, and short-circuit protection ensure robust operation and provide protection in the event of over-current.

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