LTC3880EUJ#TRPBF

Frequency - Switching:	--
Base Part Number:	LTC3880
Supplier Device Package:	40-QFN (6x6)
Package / Case:	40-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 105°C (TA)
Control Features:	Enable, Frequency Control
Serial Interfaces:	I²C, PMBus
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	PolyPhase®
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 24 V
Output Phases:	2
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The LTC3880EUJ#TRPBF is a DC-DC switching controller IC that provides an extremely low output voltage ripple, a very high power efficiency, and supports a wide range of inputvoltages. It is designed for use in the latest applications such as handheld electronics, battery-powered systems, and power management ICs.

Application Field

LTC3880EUJ#TRPBF can provide extremely low output ripple and high power efficiency, making it the ideal choice for highly portable applications. The wide input voltage range and the integrated power switch design make the LTC3880EUJ#TRPBF suitable for use in designs that require a reliable output in a variety of conditions. The controller can be used in battery-powered applications, as well as automotive and aerospace applications, where reliable operations are required in harsh and potentially unstable conditions.

Working Principle

The LTC3880EUJ#TRPBF DC-DC switching controller monitors the output voltage and adjusts its power switch duty cycle automatically in order to maintain the desired output voltage. A built-in peak current detector monitors the current of the synchronous rectified output switch and, if necessary, the flyback inductor current. A high efficiency current mode architecture is used to accurately regulate the output voltage. The circuit has power-on reset and undervoltage lockout circuitry that ensures safe operation.

Features

The LTC3880EUJ#TRPBF has several features that make it an ideal choice for many applications. The wide input voltage range (5.5V to 42V) helps to ensure reliable operation even in the presence of unstable input voltage sources. The adjustable switching frequency (from 200kHz to 1.5MHz) can be adjusted to accommodate a variety of applications. It also features adaptive MOSFET gate drive, current sensing, and control loop compensation to ensure reliable operation.

Conclusion

The LTC3880EUJ#TRPBF is an ideal DC-DC switching controller for applications where low output voltage ripple, high power efficiency, and a wide input voltage range are needed. The integrated current monitor, power-on reset, and undervoltage lockout circuitry ensure safe operation in a variety of environments. The adjustable switching frequency, adaptive MOSFET gate drive, and current sensing make the LTC3880EUJ#TRPBF a reliable and effective choice for power management.

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