TPS2145IPWP

Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - Low-dropout voltage regulator - Adjustable output voltage - Overcurrent and thermal protection - Wide input voltage range - Small package size

Package: TSSOP (Thin Shrink Small Outline Package)

Essence: The TPS2145IPWP is an integrated circuit that provides power management functions, specifically as a low-dropout voltage regulator.

Packaging/Quantity: The TPS2145IPWP is available in a TSSOP package. It is typically sold in reels or tubes containing multiple units.

Specifications

The TPS2145IPWP has the following specifications:

• Input Voltage Range: 2.7V to 6.5V
• Output Voltage Range: 0.8V to 5.5V
• Dropout Voltage: 200mV at 100mA load current
• Maximum Output Current: 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The TPS2145IPWP has the following pin configuration:

1. EN (Enable)
2. GND (Ground)
3. FB (Feedback)
4. VIN (Input Voltage)
5. VOUT (Output Voltage)
6. PG (Power Good)
7. SS (Soft Start)
8. BST (Bootstrap)

Functional Features

The TPS2145IPWP offers the following functional features:

1. Low-Dropout Voltage Regulator: Provides a stable output voltage even when the input voltage is close to the desired output voltage.
2. Adjustable Output Voltage: Allows the user to set the desired output voltage within the specified range.
3. Overcurrent and Thermal Protection: Safeguards the circuit by limiting the output current and preventing overheating.
4. Wide Input Voltage Range: Accepts a wide range of input voltages, making it suitable for various applications.
5. Small Package Size: The TSSOP package enables compact designs and saves board space.

Advantages and Disadvantages

Advantages: - Stable output voltage - Adjustable voltage range - Protection against overcurrent and thermal issues - Versatile input voltage compatibility - Compact package size

Disadvantages: - Limited maximum output current (500mA) - Quiescent current may affect power efficiency in low-power applications

Working Principles

The TPS2145IPWP operates as a low-dropout voltage regulator. It regulates the output voltage by maintaining a constant voltage difference between the input and output terminals. This is achieved through an internal feedback mechanism that adjusts the pass transistor's resistance to maintain the desired output voltage.

When the enable pin (EN) is high, the regulator is active, and the output voltage is regulated according to the feedback voltage at the FB pin. The PG pin indicates the status of the output voltage, providing a signal when the voltage is within the specified range.

The TPS2145IPWP also incorporates protection features such as overcurrent and thermal protection. These mechanisms ensure the safe operation of the device and protect it from damage under abnormal conditions.

Detailed Application Field Plans

The TPS2145IPWP can be used in various applications, including but not limited to:

1. Battery-powered devices: Provides stable voltage regulation for portable electronics, such as smartphones, tablets, and wearable devices.
2. Industrial automation: Suitable for powering sensors, actuators, and control systems in industrial environments.
3. Automotive electronics: Used in automotive applications, such as infotainment systems, lighting controls, and engine management systems.
4. Communication equipment: Enables reliable power management in routers, switches, and other network devices.
5. Medical devices: Provides regulated power for medical equipment, such as patient monitors, infusion pumps, and diagnostic devices.

Detailed and Complete Alternative Models

1. TPS2147IPWP: Similar to TPS2145IPWP but with a higher maximum output current of 1A.
2. TPS2148IPWP: Offers additional features like adjustable soft start and power sequencing capabilities.
3. TPS2149IPWP: Provides enhanced thermal protection and higher input voltage range compared to TPS2145IPWP.

These alternative models offer similar functionality to the TPS2145IPWP but may have different specifications or additional features that cater to specific application requirements.

In conclusion, the TPS2145IPWP is an integrated circuit belonging to the power management category. It serves as a low-dropout voltage regulator with adjustable output voltage, overcurrent and thermal protection, wide input voltage range, and a compact package size. Its versatile applications include battery-powered devices, industrial automation, automotive electronics, communication equipment, and medical devices. Alternative models such as TPS2147IP