ISL6534CRZ-T

Voltage/Current - Output 3:	Controller
Base Part Number:	ISL6534
Supplier Device Package:	32-QFN (5x5)
Package / Case:	32-VFQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	3.3 V ~ 12 V
w/Sequencer:	Yes
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	Controller
Voltage/Current - Output 1:	Controller
Frequency - Switching:	300kHz ~ 1MHz
Number of Outputs:	3
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (2), Linear (LDO) (1)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ISL6534CRZ-T Application Field and Working Principle

The ISL6534CRZ-T is a high-efficiency step-down regulator from Intersil, belonging to the family of PMIC - Voltage Regulators - Linear + Switching. Its main applications include powering of FPGAs, ADC, DSP, MCU, and ASICs. This high-performance integrated circuit is designed to provide a regulated output voltage regardless of the input voltage, thus allowing the processor, or host system, to have regulated voltage to work all the time even when input voltage is not enough, unstable, or is varying over a wide range. The ISL6534CRZ-T utilizes a switching regulator as its primary source of power, as opposed to the more common linear regulator, providing a highly efficient power solution for applications requiring higher output currents, such as FPGAs and ASICs. Its switching frequency is adjustable between 300KHz and 2.2MHz, thus allowing for further increased efficiency over a wide range of output currents. The output voltage of the switching regulator is then regulated by an advanced linear regulator, which senses the output of the switching regulator and provides a low-noise and low-ripple output current. The linear regulator is usually configured as a “tracking” linear regulator, which allows for it to track the input voltage and provide a stable output voltage across a wide range of input voltages. This tracking feature makes it very useful for applications that require a constant, low-noise output voltage regardless of input voltage variations and load variations, such as those found in FPGAs and ASICs. The ISL6534CRZ-T also includes on-chip voltage protection circuitry, which is used to protect the IC from excessively high input and output voltages. The on-chip protection circuitry can detect when the input or output voltage has exceeded its allowable range and will shut down the regulator to protect the IC from further damage. The ISL6534CRZ-T also includes an over-temperature protection circuit, which will shut down the regulator if the temperature of the IC has exceeded a certain threshold. In summary, the ISL6534CRZ-T allows for efficient and reliable power delivery across a wide range of input voltages and load currents, making it an ideal power solution for a number of applications, including FPGAs, ASICs, MCUs, and DSPs. Its on-chip protection circuitry ensures the IC is not damaged by high input or output voltages, and its adjustable switching frequency allows for further increased efficiency when high output currents are required.

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