MAX8511EXK89+T

Current - Output:	120mA
Base Part Number:	MAX8511
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	72dB ~ 46dB (1kHz ~ 100kHz)
Current - Quiescent (Iq):	90µA
Series:	--
Voltage Dropout (Max):	0.135V @ 120mA (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.9V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

MAX8511EXK89+T is a high-performance, voltage-mode Pulse Width Modulation (PWM) control linear regulator with low dropout, low quiescent current, and high accuracy output. It is used for a wide range of DC to DC applications, from automotive systems to laptop computers and other high-power applications. Through the combination of low-cost MOSFETs, power-saving sleep mode, linear current-limit circuit, ultra-low quiescent current, and a wide-range input voltage from 2.7V to 25V, this device is ideal for driving various power devices. The MAX8511EXK89+T uses a low-cost PWM control scheme with a small output capacitor that contributes to the reduction of system cost and power consumption.

Application Fields

The MAX8511EXK89+T is suitable for a wide range of mobile applications. It can be used for high efficiency DC/DC converters in laptops and notebooks, cellular phones and smartphones, as well as automotive systems. It is also useful for other consumer electronics applications, such as gaming consoles and wearables.

Features

The MAX8511EXK89+T provides several features that are ideal for low-power, DC-to-DC power regulation. It is designed with very low quiescent current, which means it consumes less power when in idle mode and thus has improved battery life. Additionally, it provides up to 5A maximum load current and features a wide input voltage range that allows it to handle up to 25V, making it suitable for automotive applications. The low-cost PWM control scheme with a small output capacitor allows for a reduction in system cost and power consumption. Other features include power-saving sleep mode, linear current-limit circuit, and thermal shutdown.

Working Principle

The MAX8511EXK89+T uses a voltage-mode Pulse Width Modulation (PWM) control linear regulator to regulate the output voltage. It does this by controlling the ON-time of the MOSFETs between the input voltage source and the output voltage. The PWM control uses a single or two small-value external capacitors to set the output voltage, as well as one or two resistors for setting the current limit.The device also features power-saving sleep mode, which ensures low-power operation, and linear current-limit circuit, which prevents the device from over-current conditions. Additionally, the MAX8511EXK89+T features an ultra-low quiescent current, reducing the system power consumption. Finally, the device has thermal protection to ensure its safe operation and protection from thermally damaging events.

Conclusion

The MAX8511EXK89+T provides reliable power regulation in a wide range of mobile, automotive, and consumer electronics applications. Through its features including low quiescent current, high load current, wide input voltage range, power-saving sleep mode, linear current-limit circuit and thermal protection, it offers a high-performance, cost-effective solution for power regulation.

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