XR77129ELBMTR-F

Voltage - Supply (Vcc/Vdd):	6 V ~ 40 V
Supplier Device Package:	44-TQFN (7x7)
Package / Case:	44-WFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable
Serial Interfaces:	I²C, SMBus
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	--
Frequency - Switching:	105kHz ~ 1.23MHz
Series:	--
Output Phases:	1
Number of Outputs:	4
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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The XR77129ELBMTR-F is a DC-DC switching controller from the family of PMIC, or power management integrated circuit, of voltage regulators. This voltage regulator is offered by Exar, a provider of high-performance, mixed-signal and analog integrated circuits, enabling customers to solve complex, power management challenges. The XR77129ELBMTR-F is a voltage regulator with 3 outputs, capable of providing accurate output voltage with minimal power loss. It is capable of switching frequencies up to 1MHz, allowing a wide range of frequencies to be used. It also has an adjustable fast-transition control which allows an output yaw which is optimized for the application, resulting in a quick, linear transition of the output voltage.The XR77129ELBMTR-F has a wide input voltage range with 8 adjustable output voltages. It is capable of providing up to 200mA current for each output and up to 600mA when all 3 outputs are used simultaneously. It is designed to operate with a low quiescent current of only 103μA and features a strong slew rate of 1000ns/V.The XR77129ELBMTR-F is designed for maximum flexibility and performance. It features temperature compensation which helps maintain accurate output voltage under temperature changes. It also utilizes load line compensation and adjustable soft-start/stop operations. In addition, it features an internal 500kHz oscillator for low-noise operation, as well as adjustable output voltage, allowing you to fine-tune the output voltage for optimal performance.The main applications of the XR77129ELBMTR-F include power conversion, power distribution, and power supply. It can be used in automotive applications, lighting, industrial, medical and aerospace systems. It is also ideal for applications which require synchronization of multiple outputs, such as AC/DC power supplies and multiple-stage telecom applications.The XR77129ELBMTR-F utilizes a step-up/down switching system to convert unregulated input voltage to a regulated output voltage. It operates by turning “on” and “off” in a defined period of time. As the input voltage increases, the controller turns on for longer time periods to ensure that the output voltage remains constant. The switch will turn off when the output voltage reaches the desired level, then turn on again when the input voltage begins to decrease. To ensure a smooth power delivery, the controller will alternate between on and off states at a specific frequency, which is determined by the external components and the load demand.The XR77129ELBMTR-F is designed to be compact, efficient, and low-cost. The controller operates with minimal power dissipation, providing superior energy efficiency. It is suitable for both cost-sensitive and high-performance applications. With its adjustable output and programmable switching frequencies, the XR77129ELBMTR-F is an ideal solution for various applications which require high-quality, reliable voltage regulation.

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