MAX6323GUT29-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Noise, High PSRR
• Package: SOT-23-6
• Essence: Precision Voltage Reference with Reset Output
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Options: 2.9V
• Output Current: 250mA
• Dropout Voltage: 120mV at 250mA
• Line Regulation: ±0.02% (typical)
• Load Regulation: ±0.05% (typical)
• Quiescent Current: 50µA (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The MAX6323GUT29-T has a total of 6 pins in the SOT-23 package:

1. GND: Ground connection
2. VCC: Input voltage supply
3. RESET: Active-low reset output
4. NC: No connect
5. BYP: Bypass capacitor connection
6. OUT: Regulated output voltage

Functional Features

• Precision voltage reference with a fixed output voltage of 2.9V
• Low dropout voltage allows operation with low input voltages
• Low noise and high power supply rejection ratio (PSRR) for stable performance
• Active-low reset output provides system reset capability
• Internal current limit and thermal shutdown protection

Advantages and Disadvantages

Advantages

• Precise and stable output voltage
• Low dropout voltage enables operation in low voltage conditions
• Low noise ensures clean power supply for sensitive applications
• Active-low reset output simplifies system reset implementation
• Internal protection features enhance reliability

Disadvantages

• Limited output current capability (250mA)
• Restricted input voltage range (2.5V to 5.5V)
• SOT-23 package may require additional PCB space

Working Principles

The MAX6323GUT29-T is a precision voltage reference with an integrated voltage regulator. It operates by comparing the internal reference voltage to the input voltage and generates a regulated output voltage of 2.9V. The device maintains a stable output voltage even when the input voltage drops close to the desired output voltage.

The active-low reset output provides a signal that can be used to reset the system when the input voltage falls below a certain threshold. This feature ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.

Internal protection mechanisms such as current limit and thermal shutdown safeguard the device from excessive current or temperature conditions, enhancing its reliability and longevity.

Detailed Application Field Plans

The MAX6323GUT29-T is commonly used in various electronic systems where a stable and precise voltage reference is required. Some potential application fields include:

1. Battery-powered devices: Portable electronics, IoT sensors, and wearables benefit from the low dropout voltage and low quiescent current of the MAX6323GUT29-T, extending battery life.
2. Industrial control systems: The precision voltage reference and reset output make it suitable for use in control circuits, ensuring accurate and reliable operation.
3. Automotive electronics: The wide operating temperature range and robust protection features make it suitable for automotive applications, such as engine control units and infotainment systems.
4. Communication equipment: The low noise and high PSRR characteristics are advantageous for maintaining clean power supply in communication devices, reducing interference and improving signal quality.

Detailed and Complete Alternative Models

1. LM317: Adjustable voltage regulator with a wide input voltage range and high output current capability. It requires external components for voltage selection.
2. LT1763: Low dropout linear regulator with adjustable output voltage and low quiescent current. It offers excellent line and load regulation.
3. TPS7A4700: Ultra-low noise, high PSRR voltage regulator with adjustable output voltage. It is suitable for noise-sensitive applications.

These alternative models provide similar functionality to the MAX6323GUT29-T but may have different specifications or package options. The choice depends on specific requirements and design constraints.

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