LTC1771EMS8#TRPBF

Frequency - Switching:	--
Base Part Number:	LTC1771
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Enable, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	2.8 V ~ 18 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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DC DC Switching Controllers – LTC1771EMS8#TRPBF

The DC/DC switching controller LTC1771EMS8#TRPBF has become increasingly popular in the Power Management Integrated Circuit (PMIC) industry as more of the world’s communication, data center and computing applications rely on distributed power systems. DC/DC switching controllers are efficient devices used to regulate the output power of a dc power supply. The LTC1771EMS8#TRPBF DC/DC switching controller is a high speed, low-voltage PWM controller providing excellent transient response while efficiently regulating output voltage and current. This DC/DC switching controller is designed to operate in a wide-input voltage range and provides a high speed voltage and current loop responses to different load conditions.

Application Field

The LTC1771EMS8#TRPBF is an ideal solution for non-isolated, high-current, high-density power conversion applications in high-power density power systems including telecommunications, automotive, avionics, and industrial applications. This DC/DC switching controller provides a cost-effective, compact solution for point-of-load regulation, where extremely fast transient response and tight line and load regulation are required. The LTC1771EMS8#TRPBF DC/DC switching controller has a wide input voltage range, low quiescent current, and low gate drive capacitance, which makes it incredibly efficient for low power applications. In addition, this switching controller provides an accurate, selectable peak current slewing rate to protect the power supply from inductor core saturations. The LTC1771EMS8#TRPBF is also designed to provide high-efficiency ripple free operation at single-ended and dual-ended configurations.

Working Principle

The LTC1771EMS8#TRPBF DC/DC switching controller operates on a two-phase PWM control technique. The two phases are equal in frequency, but in opposite directions to provide a low ripple PWM drive output. A two-phase design also reduces the stress on power MOSFETs by lowering their switching losses. This DC/DC switching controller has an adjustable switching frequency of up to 800kHz, allowing it to optimize the transient response in varying load conditions and provide higher efficiency. This switching frequency can be externally programmed to ensure the optimal frequency of power MOSFETs for noise reduction. The LTC1771EMS8#TRPBF DC/DC switching controller incorporates a high-bandwidth voltage loop for accurate regulation of the output voltage, and a programmable current-limit circuit for over-current protection. Additionally, the device provides a temperature-compensated regulate that automatically adjusts the switching frequency in response to temperature changes for improved power supply performance over temperature across a wide range of operating conditions.

Conclusion

The LTC1771EMS8#TRPBF DC/DC switching controller is an ideal solution for distributed power systems with high-current loads, providing an efficient, reliable, and cost-effective solution. This DC/DC switching controller offers high-speed operation with a wide input voltage range and low gate drive capacitance to ensure exceptional performance in various power management systems. The temperature-compensated regulate provides an additional level of protection against over temperature conditions. As more and more applications rely on distributed power systems, the need for efficient, high-performance DC/DC switching controllers will continue to increase. The LTC1771EMS8#TRPBF is an ideal solution for these applications and as such is quickly becoming a popular choice for power supply design and implementation.

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