LT1109CN8-12#PBF

Voltage - Output (Min/Fixed):	12V
Base Part Number:	LT1109
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	120kHz
Current - Output:	1.2A (Switch)
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	20V
Voltage - Input (Min):	5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tube

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<p>The LT1109CN8-12#PBF is an integrated DC-DC switching regulator that is part of a family of voltage regulators within the PMIC category of circuits. This device is specifically designed to provide accurate and low-noise power supply regulation in a variety of applications. It features a high-speed pulse width modulation (PWM) control system, adjustable output voltage setting and over-voltage protection of up to 35 volts.</p><p>The LT1109CN8-12#PBF is a non-inverting buck switching regulator with a regulated current output of up to 4 A and can operate from an input voltage range of 3-30 V. To keep the output voltage constant, even when the loading is changed, the device uses a high-gain error amplifier with an internal adjustable reference voltage. This ensures a stable output voltage over a wide range of load current.</p><p>The LT1109CN8-12#PBF device is ideal for providing a well-regulated supply voltage in a variety of applications, including automotive, consumer electronics, industrial, lighting, and audio products. The device offers low output ripple noise, fast response to load changes, and a wide input voltage range. It provides excellent design flexibility with its adjustable output voltage, selectable switching frequency, and adjustable loop compensation.</p><p>The working principle of the LT1109CN8-12#PBF is that it uses a high-gain error amplifier to compare its reference voltage to the output voltage. If the output voltage rises above the set point, the error amplifier will reduce the pulse-width duty cycle of the switch, thereby reducing the output voltage. Similarly, if the output voltage falls below the set point, the error amplifier will increase the duty cycle to compensate and raise the output voltage. This comparison results in an output voltage that remains steady regardless of input and output conditions.</p><p>The LT1109CN8-12#PBF is packaged in an 8-pin SOIC package and operates at a temperature range of – 40°C to + 125°C. It is suitable for surface-mount applications and has an extended operating temperature range. It provides a cost-effective, reliable power supply solution for a variety of industrial, automotive, communication, and computer applications.</p>

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