ISL95831CHRTZ-T

Series:	Robust Ripple Regulator™ (R3)
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Converter, Intel IMVP-7, VR12™
Voltage - Input:	4.5 V ~ 25 V
Number of Outputs:	2
Voltage - Output:	0.25 V ~ 1.52 V
Operating Temperature:	-10°C ~ 100°C
Mounting Type:	Surface Mount
Package / Case:	48-WFQFN Exposed Pad
Supplier Device Package:	48-TQFN (6x6)
Base Part Number:	ISL95831

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The ISL95831CHRTZ-T is a programmable high voltage linear regulator that provides accurate micropower voltage regulation for a variety of applications. The device is designed to operate with an adjustable output voltage ranging up to 22.0 V, with a maximum input voltage of 24 V. It is suitable for applications with very low quiescent current requirements and provides an efficient and cost-effective solution for applications that require a precision voltage regulator.The ISL95831CHRTZ-T is a low-dropout (LDO) high-voltage linear regulator that integrates an adjustable reference and error amplifier with a low-noise voltage regulator to provide a single-channel, high-accuracy system power supply design. The combination of high accuracy and low quiescent current, makes the ISL95831CHRTZ-T ideal for applications requiring ultra-efficient power management.The output voltage of the ISL95831CHRTZ-T is adjustable via an external reference and error amplifier. The output voltage can be set accurately by selecting the appropriate reference voltage and gain setting. The accuracy of the output voltage is typically a few millivolts regardless of the load current or line conditions. The maximum current output is measured at 12 A, with a maximum output voltage of 22.0 V, with an input voltage of up to 24 V.The ISL95831CHRTZ-T is an efficient, low quiescent current, high accuracy linear regulator and is ideal for applications that require very low quiescent current, together with high accuracy voltage control. This combination of high accuracy and low quiescent current makes the ISL95831CHRTZ-T an ideal solution for applications such as hand held radios, ultrasonic imaging systems, medical equipment, etc.The circuit topology of the ISL95831CHRTZ-T is a two-stage High Voltage Low Dropout (HVLDO) regulator. In the first stage, an external reference voltage is compared with a voltage across a reference resistor. The output of the first stage is then connected to an error amplifier. The output of the error amplifier is then compared to a reference voltage that represents the required setpoint voltage of the regulator. The output of the second stage amplifier is connected in series to the enable input of a series pass transistor which functions as a constant current source.The series pass transistor is the main component of the ISL95831CHRTZ-T and its function is to provide a constant current source so that the output voltage remains constant regardless of the load current applied. The output voltage of the ISL95831CHRTZ-T is stabilized by the error amplifier and the feedback voltage from the series pass transistor. The main features of the ISL95831CHRTZ-T are low dropout voltage, low quiescent current and high accuracy. The device offers a wide adjustable voltage range, from 0.8 V to 22 V, which is suitable for many applications. The quiescent current is extremely low (1 μA typ.), making it suitable for battery powered applications, and the accuracy is typically ±1% over the full temperature range of -40°C to 85°C.The ISL95831CHRTZ-T is a low cost, high accuracy linear regulator for applications requiring very low quiescent current and a wide adjustable voltage range. The device is suitable for use in a variety of applications, such as hand held radios, ultrasonic imaging systems, medical equipment, etc. The low dropout voltage and low quiescent current make it ideal for battery powered applications, and the high accuracy makes it an attractive solution for applications requiring precise voltage regulation.

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