ISL6341BCRZ-T

Frequency - Switching:	600kHz
Base Part Number:	ISL6341
Supplier Device Package:	10-TDFN-EP (3x3)
Package / Case:	10-WFDFN Exposed Pad
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Enable, Phase Control, Power Good, Power on Reset
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	75%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.5 V ~ 14.4 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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Editorial Note：This article aims to introduce the application fields and the working principle of ISL6341BCRZ-T. Moreover, this article belongs to the category of PMIC - Voltage Regulators - DC DC Switching Controllers. Please do not show the title. Output in HTML format is appreciated.

The ISL6341BCRZ-T is a synchronous buck-boost controller that is designed for automotive production applications. It uses a tiny package, allowing for improved design flexibility and low power dissipation. The device can be used to regulate voltages between 1.2V and 5.5V, within an input voltage range of 2.5V to 10V. It can deliver up to 3A of output current and is capable of switching at frequencies of up to 2MHz.

The ISL6341BCRZ-T is suitable for a variety of automotive applications and can be used to regulate electronic power supplies in engine control units, steering systems, lighting systems and more. One of the primary advantages of this controller is its ability to operate smoothly in buck and boost configurations simultaneously. This capability is especially useful for applications that require output voltages that fluctuate between an upper and a lower limit.

The ISL6341BCRZ-T can also be used in start-stop applications, allowing the system to switch from direct current (DC) to alternating current (AC) and back again. This feature can reduce fuel consumption and improve safety by allowing the system to shut down quickly in the event of an emergency. Additionally, the device has advanced protection features built in, including thermal shutdown, undervoltage lockout, cycle-by-cycle current limit, and soft start.

The working principle of the ISL6341BCRZ-T is quite simple. The device monitors the output current and adjusts the switching frequency accordingly. The peak current of the switched output is then compared to the limit and if necessary the pulse width is modified. This ensures constant output current while also protecting the device from current overload. In addition, the device also monitors the output voltage and adjusts the switching frequency accordingly. This ensures an active regulation of the output voltage, providing a constant and stable output.

Overall, the ISL6341BCRZ-T is a highly efficient and versatile synchronous buck-boost controller that offers superior performance for a wide variety of automotive applications. It integrates several advanced protection features, including thermal and current protection, to provide safe, reliable operation. Moreover, its small package size and high switching frequency make it ideally suited for crowded automotive PCBs. This device is an excellent choice for automotive power supply applications that require stable and reliable power.

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