ISL6521CB-T

Voltage/Current - Output 3:	Adjustable, 120mA
Base Part Number:	ISL6521
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C
Voltage - Supply:	4.5 V ~ 5.5 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	Adjustable, 120mA
Voltage/Current - Output 1:	Controller
Frequency - Switching:	300kHz
Number of Outputs:	4
Function:	Any Function
Topology:	Step-Down (Buck) Synchronous (1), Linear (LDO) (3)
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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ISL6521CB-T is a dual device that combines a linear voltage regulator and a switching voltage regulator. It is designed to fulfill a variety of applications, such as automotive and industrial, where both of these modes of power supply are required. This versatile integrated circuit is ideal for systems that need efficient power management of multiple power sources, often powered from low voltage DC sources. The ISL6521CB-T integrates two separate regulators together on a single chip; one is a linear voltage regulator and the other is a switching voltage regulator. The linear regulator is responsible for providing a stable, noise-free output voltage with fast response time to changes in input voltage and load demand. The switching regulator is responsible for providing high-efficiency power conversion to multiple power sources. The ISL6521CB-T\'s linear regulator is designed to accept low voltage DC inputs and produce fixed or adjustable output voltages up to 40V. Output voltage is typically set by changing the external resistive divider ratio or through a digital interface. The device also has short-circuit protection and a thermally enhanced package to ensure safe operation. The ISL6521CB-T\'s switching regulator is optimized for high-efficiency operation, providing a wide range of output voltages and currents at low input voltage. The voltage regulator contains an on-chip switch that is driven by a high-frequency oscillator and a high-current low-side MOSFET power switch. It also has an input voltage regulator section which helps improve efficiency and reliability under varying load conditions. The device operates in discontinuous conduction mode and is optimized for up to 93% efficiency. The ISL6521CB-T is highly configurable and can be used to support different topologies such as buck, boost, flyback, and buck-boost, along with step-down, step-up, and bidirectional configurations. The device\'s switching frequency and high-side MOSFET driver current can be programmed during production, allowing users to customize the device to meet their specific requirements. In summary, the ISL6521CB-T is a dual voltage regulator device that combines a high-efficiency switching regulator and a linear voltage regulator for efficient power management. The device is ideal for automotive and industrial applications that require multiple output voltages and currents. Its high-performance and configurability make it a great choice for any application that needs both linear and switching power supplies.

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