ISL6557ACBZ-T

Frequency - Switching:	80kHz ~ 1.5MHz
Base Part Number:	ISL6557A
Supplier Device Package:	24-SOIC
Package / Case:	24-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Current Limit, Enable, Power Good
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	--
Duty Cycle (Max):	75%
Series:	--
Voltage - Supply (Vcc/Vdd):	4.75 V ~ 5.25 V
Output Phases:	4
Number of Outputs:	4
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	PWM Signal
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to ISL6557ACBZ-T

The ISL6557ACBZ-T is a type of DC/DC switching controller manufactured by Intersil Corporation which belongs to the family of PMIC (Power Management ICs). This voltage regulator is designed to be used in systems that require accurate and precise voltage regulation. The main applications of this device make use of its excellent power supply flexibility, requiring the specific application field and working principle of the DC-DC switching controller.

Applications of ISL6557ACBZ-T

The ISL6557ACBZ-T is suitable for use in a wide range of applications as a power supply controller. As an example, it has been extensively used in the laptop field for battery saving or power management applications or for providing precise levels of control in vehicles, industrial applications and medical devices. In laptops and power management systems, it is used to boost the low voltage of a single battery or multiple battery cell. This helps in extending the lifetime of the laptop and battery by controlling the voltage levels precisely.In vehicles, it is used to monitor both the current and voltage levels of the main power supply. It has been used to provide precise levels of control and to regulate the current flow to the starter motor and alternator.In industrial applications and medical devices, the ISL6557ACBZ-T plays an important role as a voltage regulator. It is used to precisely regulate the voltage of the motor and key components such as fans and motors.

How the ISL6557ACBZ-T Work

The ISL6557ACBZ-T is designed to be used as a DC/DC switching controller, which means that it can regulate the current or voltage between two or more power sources. This controller works by switching the voltage levels between two or more power sources as needed. The controller is powered by an internal voltage reference, and the power supply signal is split into two parts using a differential amplifier.The first part is used to compare the output voltage level and the reference voltage level and calculate the difference between them. This difference is then used to adjust the duty cycle of the powerMosfet switches. The duty cycle of the switches is used to control the voltage level of the output signal. The feedback process is then repeated until the output voltage reaches a stable level.

Conclusion

The ISL6557ACBZ-T is a powerful and precise DC/DC switching controller developed by Intersil Corporation. It is suitable for use in a variety of applications including laptops, vehicles, industrial applications and medical devices. The controller works by regulating the current and voltage between two or more sources, and it is powered by an internal voltage reference. By switching the voltage levels between two or more sources, the controller can easily provide the precise levels of control that certain applications require.

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