MAX5023SASA+

Current - Output:	150mA
Base Part Number:	MAX5023
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Reverse Polarity, Short Circuit
Control Features:	Enable, Hold, Reset, Watchdog
PSRR:	54dB (100Hz)
Current - Quiescent (Iq):	140µA
Series:	--
Voltage Dropout (Max):	1.5V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	65V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction to MAX5023SASA+

The MAX5023SASA+ is a low-power, low-noise, low-dropout (LDO) linear voltage regulator. It is designed to offer a highly accurate, low-power, versatile linear voltage regulator solution to meet the needs of increasingly power-hungry and sensitive applications. This voltage regulator offers two flexible design outputs, adjustable or fixed, enabling flexible choice of regulation voltage.

Applications of the MAX5023SASA+

The MAX5023SASA+ voltage regulator is ideal for applications requiring low power, low noise, and high accuracy such as LCD backlights, mobile handsets and portable audio players.The device is also suitable for powering microprocessors, DSPs, and memory used in power-sensitive applications. It integrates current sensing circuitry and offers programmable current limits along with extensive protection features. It features low ground current (5 µA in operational mode), low operating current (3.6 mA in operational mode), and a total power consumption of 33 mW in operational mode. The device also features an at-a-glance visual indicator of supply voltage and device status.The small 20-pin TSSOP package allows it to be easily integrated into very small form factor applications, while its low operating and standby current makes it an ideal choice for applications requiring long battery life.

Working Principle of the MAX5023SASA+

The MAX5023SASA+ follows the classic linear regulation scheme, which consists of two main components, a driver and an error amplifier.First, the driver circuit compares the output voltage with the reference voltage and amplifies the difference between the two. The driver then applies the amplified difference to the error amplifier stage, which compares the driver\'s output with a fixed reference voltage (Vref).The output of the error amplifier, known as the error signal, drives the error amplifier transistor, which controls the base drive current of the main pass transistor. The main pass transistor then controls the output current in accordance with the voltage level set by the reference voltage.The main advantage of this voltage regulator is that it produces low output noise and a low drop-out voltage, enabling it to regulate even very low input voltages.

Conclusion

The MAX5023SASA+ is a versatile, low-power, low-noise, high-accuracy linear voltage regulator. It is the ideal choice for powering microprocessors, DSPs, LCD backlights, and other power-sensitive applications in small form factor devices. Its low operating and standby current consumption allows for long battery life and at-a-glance visual indicator of supply voltage and device status. The classic linear regulation scheme provides low output noise and a low drop-out voltage for voltage regulation even at very low input voltages.

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