MAX1921EUT33+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low Dropout Linear Regulator
• Package: SOT-23-6
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.8V to 3.3V
• Maximum Output Current: 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: ±0.02%/V
• Load Regulation: ±0.05%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1921EUT33+T has a total of six pins arranged as follows:

___________ | | VOUT| 1 6 | VIN GND | 2 5 | BYP EN | 3 4 | FB |___________|

1. VOUT: Output Voltage Pin
2. GND: Ground Pin
3. EN: Enable Pin
4. FB: Feedback Pin
5. BYP: Bypass Capacitor Pin
6. VIN: Input Voltage Pin

Functional Features

• Low dropout voltage for efficient power conversion.
• Wide input voltage range allows flexibility in power supply selection.
• Adjustable output voltage to meet various application requirements.
• Low quiescent current for power-saving operation.
• Excellent line and load regulation for stable output voltage.
• Thermal shutdown and current limit protection for device safety.

Advantages and Disadvantages

Advantages

• Low dropout voltage ensures efficient power conversion.
• Wide input voltage range provides flexibility in power supply selection.
• Adjustable output voltage allows customization for different applications.
• Low quiescent current enables power-saving operation.
• Excellent line and load regulation ensures stable output voltage.
• Thermal shutdown and current limit protection enhance device safety.

Disadvantages

• Limited maximum output current of 150mA may not be suitable for high-power applications.
• SOT-23-6 package may require additional thermal management for certain operating conditions.

Working Principles

The MAX1921EUT33+T is a low dropout linear regulator that regulates the output voltage based on the feedback received from the FB pin. The EN pin controls the enable/disable state of the regulator. When enabled, the regulator maintains a stable output voltage by adjusting the pass transistor's resistance to compensate for changes in input voltage and load conditions. The BYP pin is used to connect an external bypass capacitor for improved stability and noise reduction.

Detailed Application Field Plans

The MAX1921EUT33+T is commonly used in various battery-powered applications, such as portable devices, handheld instruments, and wireless communication devices. It can also be utilized in automotive electronics, industrial control systems, and other low-power applications requiring a stable and efficient voltage regulator.

Detailed and Complete Alternative Models

• MAX1921ESA+: SOIC-8 package, adjustable output voltage
• MAX1921ETC+: TDFN-6 package, fixed output voltage options
• MAX1921EUT25+T: SOT-23-6 package, fixed 2.5V output voltage
• MAX1921EUT50+T: SOT-23-6 package, fixed 5.0V output voltage

(Note: This list is not exhaustive and there may be other alternative models available from the manufacturer.)

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