STM6321LWY6F

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: Low Dropout Voltage Regulator
• Package: SOT-23-5
• Essence: Regulates voltage with low dropout
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.0V
• Output Voltage Range: 1.2V to 5.5V
• Dropout Voltage: 200mV (typical)
• Maximum Output Current: 150mA
• Quiescent Current: 45µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The STM6321LWY6F is a 5-pin integrated circuit with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. EN: Enable pin
4. FB: Feedback pin
5. VOUT: Output voltage pin

Functional Features

• Low dropout voltage: The STM6321LWY6F has a low dropout voltage of only 200mV, ensuring efficient regulation even when the input voltage is close to the desired output voltage.
• Low quiescent current: With a typical quiescent current of only 45µA, this regulator minimizes power consumption in standby or low-load conditions.
• Enable pin control: The EN pin allows for easy on/off control of the regulator, enabling power-saving features in applications where the regulator is not required at all times.
• Short-circuit protection: The STM6321LWY6F incorporates short-circuit protection, safeguarding the device and the connected circuitry from damage in case of a fault.

Advantages and Disadvantages

Advantages: - Low dropout voltage ensures efficient regulation. - Low quiescent current minimizes power consumption. - Enable pin control allows for easy on/off operation. - Short-circuit protection enhances device reliability.

Disadvantages: - Maximum output current limited to 150mA, may not be suitable for high-power applications. - Limited input voltage range (2.5V to 6.0V) may restrict compatibility with certain systems.

Working Principles

The STM6321LWY6F is a low dropout voltage regulator that operates by comparing the feedback voltage (FB) with a reference voltage. It adjusts the pass transistor's resistance to maintain a stable output voltage (VOUT) regardless of variations in the input voltage (VIN) or load conditions. The enable pin (EN) controls the regulator's operation, allowing it to be turned on or off as needed.

Detailed Application Field Plans

The STM6321LWY6F is well-suited for various applications that require stable voltage regulation with low dropout. Some potential application fields include:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices can benefit from the low dropout voltage and low quiescent current of the STM6321LWY6F, extending battery life.
2. IoT devices: Internet of Things (IoT) sensors and modules often operate on low voltages and have strict power constraints. This regulator can provide reliable voltage regulation in such applications.
3. Automotive electronics: With its wide operating temperature range (-40°C to +85°C), the STM6321LWY6F can be used in automotive applications where temperature fluctuations are common.

Detailed and Complete Alternative Models

1. LM1117: A popular alternative with similar specifications and package options.
2. XC6206: Another low dropout voltage regulator available in various package options.
3. AP2112: A high-precision, low dropout voltage regulator suitable for demanding applications.

These alternative models offer similar functionality and can be considered as substitutes for the STM6321LWY6F based on specific requirements.

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