LTC3884IRHE-1#TRPBF

Frequency - Switching:	200kHz ~ 1MHz
Base Part Number:	LTC3884
Supplier Device Package:	48-GQFN (6x5)
Package / Case:	48-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Phase Control, Power Good
Serial Interfaces:	I²C, PMBus
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Series:	PolyPhase®
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 38 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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LTC3884IRHE-1#TRPBF Application Field and Working Principle

PMIC – Voltage Regulators – DC DC Switching Controllers are devices that regulate the amount of current passing through an IC or component. The LTC3884IRHE-1#TRPBF is specifically a DC/DC controller with integrated high-side and low-side MOSFET drivers designed to provide adjustable, synchronous rectified step-down (buck) or step-up/step-down (buck-boost) voltage regulation. This device optimizes component count, solution size, and cost in DC/DC conversion applications.The main application for the LTC3884IRHE-1#TRPBF is to provide a synchronized output voltage that can be adjusted from a minimum of 0.6V to a maximum of 96V. It can be used to power all kinds of loads, from low power supplies to high power solutions. The device is optimized for a wide variety of DC to DC buck and buck-boost applications, and can be easily configure for single or multiple output topologies.The LTC3884IRHE-1#TRPBF uses a synchronous rectified fixed frequency switching topology to achieve high efficiency, fast transient response, excellent line and load regulation, and low ripple. Its fixed-frequency PWM architecture uses voltage or current mode control with 0.1% peak current to peak current accuracy in median operation over temperature. As an integrated MOSFET driver, the device offers fast turn- on and turn-off characteristics to eliminate excessive ringing and switching noise.The output voltage can be adjusted by monitoring the FB pin voltage via an external voltage sense resistor. An external compensation pin can be used to adjust the loop gain. Also, the device can be enabled/disabled via a logic input pin. This device is also equipped with a thermally-enhanced, exposed pad anodized alumina package, reducing the thermal impedance and increasing the power density, whilst also making it more reliable and shock-resistant.The LTC3884IRHE-1#TRPBF also offers protection features, such as short-circuit protection and over-temperature protection. The short-circuit protection limits the output current. The over-temperature protection limits the total power dissipation in the device by reducing the output voltage, in order to ensure that the device stays within its operating temperature range.In conclusion, the LTC3884IRHE-1#TRPBF is a DC/DC controller with integrated high-side and low-side MOSFET drivers designed to provide adjustable, synchronous rectified step-down (buck) or step-up/step-down (buck-boost) voltage regulation and is ideally suited for a variety of DC to DC buck and buck-boost applications. It is an integrated device with low power consumption, high efficiency and robustness in the widely used temperature range which makes it a great choice for most applications.

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