LT1176CSW#PBF

Series:	--
Packaging:	Tube
Part Status:	Active
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Output Configuration:	Positive or Negative
Topology:	Buck, Flyback
Output Type:	Adjustable
Number of Outputs:	1
Voltage - Input (Min):	8V
Voltage - Input (Max):	35V
Voltage - Output (Min/Fixed):	2.21V
Voltage - Output (Max):	31.5V
Current - Output:	1.2A (Switch)
Frequency - Switching:	100kHz
Synchronous Rectifier:	No
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SOIC
Base Part Number:	LT1176

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Introduction

LT1176CSW#PBF, from Linear Technology, is an adjustable step-down DC-DC converter with up to 1.8 A continuous load current and capable of supplying output power up to 14 W. It’s very suitable for driving low voltage differential signs(LVDS) where the input voltage needs to be stepped down significantly. It’s mainly used to regulate output voltage in the range of 4.75V and 14V.

Application Field

LT1176CSW#PBF is typically used in low power step-down applications such as FPGAs and microprocessors, but also finds its application field in point-of-load (POL) converters and power supply systems. The output voltage of the converter is adjustable, it can be programmed anywhere in the range of 0.5V to the VIN value, allowing the user to select an optimal value for the application.

Working Principle

LT1176CSW#PBF works by switching the input voltage on and off to create a regulated output voltage. When the voltage is switched on, the DC-DC converter works as a step-down voltage regulator, allowing the user to control the output voltage. When the voltage is switched off, it works as an inverter and provides up to 36V output voltage with up to 18A of current.The DC-DC converter uses Pulse Width Modulation (PWM) to control the output voltage of the converter. This is done by controlling the duty cycle of the PWM signal, thus changing the on-time of the converter, resulting in a regulated output voltage. The LT1176CSW#PBF also provides overvoltage protection, further enhancing its power management capabilities.

Conclusion

LT1176CSW#PBF is a key component recommended by Linear Technology to regulate output voltage in low power step-down applications. It can be used to regulate voltage in the range of 4.75V and 14V, work as a step-down DC-DC converter or an inverter, depending on the input voltage. It works by switching the input voltage on and off to create a regulated output voltage, using Pulse Width Modulation (PWM). This DC-DC converter also provides overvoltage protection, further enhancing its power management capabilities.

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