ISL9011AIRJBZ

Current - Output:	150mA, 300mA
Base Part Number:	ISL9011A
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	--
Current - Supply (Max):	60µA
Current - Quiescent (Iq):	40µA
Series:	--
Voltage Dropout (Max):	0.2V @ 150mA, -
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V, 1.5V
Voltage - Input (Max):	6.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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ISL9011AIRJBZ Application Field and Working Principle

The ISL9011AIRJBZ is a Linear Voltage Regulator PMIC (power management IC) offered by Intersil Corporation. The primary application field for this device is handheld and consumer electronic products, including digital cameras, PDAs, DVD/DVRs, MP3 players, and mobile phones. The ISL9011AIRJBZ provides a wide range of efficient, integrated solution regulators with high power density and noise immunity.The ISL9011AIRJBZ contains an integrated two-phase buck regulator, a voltage supervisor IC, an adjustable high-side switch, and linear voltage and current shunt regulators. The buck regulator, supervisor, and switch can be independently controlled by system-level logic signals. The internal linear voltage regulator is configured as a high-performance low-dropout (LDO) voltage regulator with a small external pass element and offers a wide range of output ranges. The internal current shunt regulator is used to monitor output current and to detect various faults.The ISL9011AIRJBZ is primarily suitable for use with 3.0V to 5.5V input and can produce outputs between 0.7V and 6.5V. It can operate at power levels up to 30W, with an output current capability of 2A. The operating frequency is variable from 250kHz up to 1.2MHz, with average power efficiency ratings of over 90%. The output voltage is accurate to less than 1.5% over the entire operating range.The ISL9011AIRJBZ also features a fast transient response time of less than 1µs and a soft start time of less than 20µs. It also offers a power-saving sleep mode, in which the device typically consumes less than 1µA of current. The device has on-chip protection circuits including programmable output current limiter, UVLO, thermal protection circuitry, overvoltage protection, undervoltage lockout (UVLO), line feed forward overcurrent protection, and overcurrent detection.The device can be controlled through the integrated I2C interface, which provides current and voltage monitoring and control. The I2C interface can be used for writing data, reading back data, and programming the device parameters, such as output voltage, current limit, and power-saving mode.The ISL9011AIRJB’s working principle is similar to that of other power management devices. It converts an AC or DC input voltage into a regulated DC output voltage. The input voltage is regulated using a buck regulator, which essentially reduces the input voltage to a lower level. The output voltage is then regulated using the adjustable voltage regulator, which is essentially a variable gain amplifier with an adjustable gain based on external components. The linear shunt regulator is used to sense the output current, and the adjustable high-side switch is used to protect the output load against excessive current. The ISL9011AIRJB is also a cost-effective solution for applications requiring good regulation accuracy and noise suppression. It has protection features that ensure safe operation and protection of the device, while its wide input voltage range and output voltage allows it to be used in a variety of applications. Furthermore, the device’s onboard I2C interface allows it to be controlled remotely. This makes the ISL9011AIRJB an attractive solution for applications requiring a compact and versatile power management IC with a wide range of features.

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