MAX761CSA+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, High Efficiency
• Package: 8-SOIC (Small Outline Integrated Circuit)
• Essence: Regulates input voltage to a desired output voltage level
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Maximum Output Current: 150mA
• Dropout Voltage: 200mV at 100mA
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX761CSA+T has a total of 8 pins:

1. GND: Ground reference for the IC.
2. IN: Input voltage pin.
3. EN: Enable pin to control the regulator's operation.
4. FB: Feedback pin to set the desired output voltage.
5. VOUT: Output voltage pin.
6. SS/TR: Soft-start/Tracking pin for controlling the startup behavior.
7. COMP: Compensation pin for stability optimization.
8. VCC: Power supply pin for internal circuitry.

Functional Features

• Low dropout voltage ensures efficient regulation even with low input-output voltage differentials.
• High efficiency design minimizes power dissipation.
• Soft-start feature allows gradual ramp-up of the output voltage during startup.
• Adjustable output voltage through external resistor divider connected to the feedback pin.
• Overcurrent and thermal protection mechanisms ensure safe operation.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows flexibility in various applications. - Low quiescent current enables power-saving operation. - Small package size makes it suitable for space-constrained designs. - Excellent line and load regulation characteristics ensure stable output voltage.

Disadvantages: - Limited maximum output current may restrict usage in high-power applications. - Dropout voltage may cause a significant voltage drop across the regulator.

Working Principles

The MAX761CSA+T is a linear voltage regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with an internal reference voltage. The error amplifier adjusts the pass transistor's base-emitter voltage to maintain the desired output voltage level. The enable pin (EN) controls the regulator's operation, allowing it to be turned on or off as required.

Detailed Application Field Plans

The MAX761CSA+T finds applications in various fields, including:

1. Battery-Powered Devices: Provides regulated voltage for portable electronics such as smartphones, tablets, and wearable devices.
2. Industrial Control Systems: Used in control circuitry to ensure stable power supply for sensors, actuators, and microcontrollers.
3. Automotive Electronics: Regulates voltage for automotive systems like infotainment units, lighting modules, and engine control units.
4. Communication Equipment: Enables reliable power supply for routers, switches, and wireless access points.
5. Medical Devices: Used in medical equipment to provide precise and stable voltage levels for critical components.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and package type.
2. LT1763-5: Offers higher maximum output current and lower dropout voltage.
3. ADP3339AKCZ-2.5: Provides adjustable output voltage and higher input voltage range.

These alternative models offer comparable functionality and can be considered based on specific application requirements.

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