TC1303B-ZA0EMF

Product Overview

• Category: Integrated Circuit
• Use: Power Management
• Characteristics: Low Dropout Voltage Regulator
• Package: SOT-23-5
• Essence: Regulates input voltage to a lower output voltage with minimal power loss
• 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 at 100mA load current
• Maximum Output Current: 250mA
• Quiescent Current: 45µA typical
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC1303B-ZA0EMF has a total of five pins:

1. VIN - Input voltage pin
2. GND - Ground pin
3. EN - Enable pin (active high)
4. FB - Feedback pin for setting the output voltage
5. VOUT - Output voltage pin

Functional Features

• Low dropout voltage: The TC1303B-ZA0EMF has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Low quiescent current: The device consumes minimal current when in standby mode, resulting in improved efficiency and extended battery life.
• Thermal shutdown protection: The regulator includes built-in thermal shutdown protection, preventing damage due to excessive temperature.
• Short-circuit protection: The device is designed to withstand short-circuit conditions without causing any harm.

Advantages and Disadvantages

Advantages

• Small package size: The SOT-23-5 package is compact, making it suitable for space-constrained applications.
• Wide input voltage range: The TC1303B-ZA0EMF can accept a wide range of input voltages, providing flexibility in various power supply designs.
• Low dropout voltage: The low dropout voltage ensures efficient regulation even with small voltage differentials.

Disadvantages

• Limited output current: The maximum output current of 250mA may not be sufficient for high-power applications.
• No adjustable output voltage: The output voltage is fixed and cannot be adjusted externally.

Working Principles

The TC1303B-ZA0EMF is a linear voltage regulator that operates by comparing the feedback voltage (FB) with a reference voltage. It adjusts the pass transistor to maintain a constant output voltage regardless of changes in the input voltage or load conditions. The enable pin (EN) allows the device to be turned on or off as needed.

Detailed Application Field Plans

The TC1303B-ZA0EMF is commonly used in battery-powered devices, such as portable electronics, IoT devices, and wireless sensors. It is suitable for applications where a stable and regulated voltage is required, such as microcontrollers, sensors, and other low-power components.

Detailed and Complete Alternative Models

1. TC1303A-ZA0EMF: Similar to TC1303B-ZA0EMF but with a lower quiescent current of 30µA.
2. TC1303C-ZA0EMF: Similar to TC1303B-ZA0EMF but with a higher maximum output current of 500mA.
3. TC1303D-ZA0EMF: Similar to TC1303B-ZA0EMF but with an adjustable output voltage feature.

These alternative models offer variations in terms of quiescent current, output current, and adjustable output voltage, providing options to suit different application requirements.

In conclusion, the TC1303B-ZA0EMF is a low dropout voltage regulator integrated circuit used for power management. It offers advantages such as a small package size, wide input voltage range, and low dropout voltage. However, it has limitations in terms of output current and lack of adjustable output voltage. The device finds applications in battery-powered devices and can be replaced by alternative models with varying specifications.