L6739TR

Voltage - Supply (Vcc/Vdd):	4.75 V ~ 13.2 V
Supplier Device Package:	16-VFQFN (3x3)
Package / Case:	16-VFQFN Exposed Pad
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control, Phase Control, Power Good
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Frequency - Switching:	200kHz
Series:	--
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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PMIC - Voltage Regulators - DC DC Switching Controllers

The L6739TR is a high-performance, adjustable, low-dropout (LDO) voltage regulator used to regulate a wide range of input voltages. It is a two-terminal, integrated, highly reliable, low-noise, low-dropout switch-mode regulator capable of providing up to 2000 mA of current. The L6739TR is ideal for portable devices, automotive audio systems, and automotive power converters and can be used as a power source for a range of applications.The main features of the L6739TR include a wide range of input voltages (2.3V to 24V DC) and a wide output voltage range (from 1V to 7V DC). The maximum output current is 2000 mA and the maximum quiescent current is 0.5 mA. It is designed to operate with a minimum on-state resistance (Rdson) of 400 mΩ. The device has a high efficiency of up to 95%.The L6739TR uses a P-channel FET as its main switch and a P channel driver for its internal circuitry. The P channel FET is used for controlling the output of the device in response to changes in the input voltage. Its main advantage is the low power consumption and minimal heat dissipation. The output voltage is maintained by a series of resistors, which can be adjusted to regulate the output voltage range, and can be further adjusted with an external feedback loop circuit.In addition to the P-channel FET, the L6739TR also contains an integrated N-channel FET. This is used for controlling the on-time and off-time of the device, thus providing enhanced control of the output current.The L6739TR also contains a built-in comparator which is used to detect under-voltage and over-voltage conditions. This ensures the device is continually operating at optimum conditions, and makes it suitable for applications where a wide range of input voltages is encountered.In terms of its working principle, the L6739TR is a closed-loop, switch-mode regulator that works by comparing the input and output voltages. When the output voltage drops, the comparator will trigger the P-channel FET, turning it on and allowing current to flow through the circuit. The current will be regulated by the resistors and the feedback loop circuit. As the output voltage rises, the P-channel FET will be turned off and the current flow will be stopped. This process is repeated until the output voltage is stabilized. The L6739TR is a versatile, adjustable, low-dropout voltage regulator that is suitable for a wide variety of applications. It provides a high level of performance, low-power consumption and reliable operation. With its wide range of input voltages and its low-dropout adjustable output voltage range, it is capable of regulating voltage from 1V to 7V DC. This makes it suitable for a wide range of applications, including portable devices, automotive audio systems, and automotive power converters.

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