LTC1148CN#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low Dropout Voltage - Adjustable Output Voltage - Current Limit Protection - Thermal Shutdown Protection

Package: DIP-8 (Dual In-Line Package)

Essence: The LTC1148CN#PBF is a voltage regulator IC that provides a stable output voltage with low dropout. It is commonly used in various electronic devices to regulate and control the voltage supplied to different components.

Packaging/Quantity: The LTC1148CN#PBF is available in a DIP-8 package, which consists of two rows of four pins each. It is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.7V to 10V
• Output Voltage Range: 1.25V to 9.5V
• Dropout Voltage: 300mV at 500mA
• Maximum Output Current: 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LTC1148CN#PBF has eight pins arranged as follows:

```

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| | --| Vout |-- --| Vin |-- --| GND |-- --| ADJ |-- --| NC |-- --| NC |-- --| Vref |-- |_______| ```

1. Vout: Output Voltage
2. Vin: Input Voltage
3. GND: Ground
4. ADJ: Adjustable Pin
5. NC: No Connection
6. NC: No Connection
7. Vref: Reference Voltage

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output voltage differentials.
• Adjustable output voltage allows for flexibility in various applications.
• Current limit protection prevents excessive current flow, protecting the IC and connected components.
• Thermal shutdown protection safeguards against overheating, ensuring reliable operation.

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient power conversion. - Adjustable output voltage provides versatility. - Current limit and thermal shutdown protection enhance reliability. - Compact DIP-8 package facilitates easy integration into circuit designs.

Disadvantages: - Limited maximum output current of 500mA may not be suitable for high-power applications. - DIP-8 package may require additional space compared to smaller surface-mount packages.

Working Principles

The LTC1148CN#PBF operates as a linear voltage regulator. It regulates the output voltage by maintaining a constant voltage drop across its internal pass transistor. The adjustable pin (ADJ) allows the user to set the desired output voltage within the specified range. The IC continuously monitors the input and output voltages, adjusting the pass transistor to maintain a stable output voltage despite variations in the input voltage or load conditions.

Detailed Application Field Plans

The LTC1148CN#PBF is widely used in various electronic devices and systems that require stable and regulated power supply. Some common application areas include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and portable audio players benefit from the LTC1148CN#PBF's low dropout voltage and adjustable output voltage, ensuring efficient power utilization and extended battery life.

2. Industrial Control Systems: The voltage regulator is suitable for powering microcontrollers, sensors, and other components in industrial control systems, providing stable and reliable operation.

3. Automotive Electronics: The LTC1148CN#PBF can be utilized in automotive applications, including infotainment systems, dashboard displays, and lighting control modules, where a stable power supply is crucial for proper functionality.

4. Communication Equipment: Wireless routers, modems, and other communication devices can benefit from the LTC1148CN#PBF's voltage regulation capabilities to ensure reliable data transmission and reception.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar characteristics and pin configuration.
2. LT1083: A high-current linear voltage regulator suitable for applications requiring higher output currents.
3. LM1117: A low dropout voltage regulator available in various fixed output voltage options.
4. LM7805: A widely used fixed 5V linear voltage regulator commonly found in many electronic devices.

These alternative models offer similar functionalities and can be considered as substitutes for the LTC1148CN#PBF depending on specific requirements and application constraints.

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