MAX8842ELT+T

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MAX8842ELT+T is an extremely low-dropout (LDO) linear regulator. This device offers a typical dropout voltage of 40 mV, and with system transients below 100 mV. This makes the MAX8842ELT+T suitable for powering DSPs, FPGAs, and ASICs in system requiring the most stringent dropout specifications. Its low quiescent current, of 435µA, makes the MAX8842ELT+T an ideal choice for powering portable and battery-powered applications.

The MAX8842ELT+T is a fixed-output, P-channel MOSFET linear regulator with a fixed-output voltage of 1.8V. The input/output (VIO) voltage range is 0.8V to 5.5V, and the maximum output current is 250mA. The output is adjustable through an external resistor divider. It features on-chip ESD protection and can operate over an operating temperature range of -40°C to +125°C. In addition, the MAX8842ELT+T is designed to meet the stringent requirements of commercial products. The MAX8842ELT+T is available in a tiny TDFN-8 package.

The working principle of MAX8842ELT+T is that it uses a P-channel, power MOSFET as a pass element. It consists of a standard feedback loop with an error amplifier, compensation circuit and P-channel MOSFET pass element. The error amplifier compares the output voltage and the reference voltage and provides the gate voltage to the P-channel MOSFET that is required to maintain the required output voltage. This device also provides over-current protection by current-limiting the output MOSFET.

MAX8842ELT+T is designed primarily for use in portable devices, such as digital cameras, MP3 players, and PDAs, as well as any other system that requires ultra-low dropout performance and minimal power consumption. In addition to its low quiescent current and ultra low dropout voltage, the MAX8842ELT+T provides excellent load and line regulation, as well as output ripple and noise performance. The combination of these factors makes it an ideal choice for powering sensitive loads and for applications in harsh environments.

The MAX8842ELT+T is an extremely versatile power management device which offers a low quiescent current, a very low dropout voltage, excellent load and line regulation, and outstanding thermal performance. The combination of these features allows it to be used in a wide range of applications that require an ultra-low dropout linear regulator. The MAX8842ELT+T is an especially attractive choice for portable, battery-powered applications that require ultra-low power consumption, minimal size, and superior performance.

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