LT1373CS8

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Switching Voltage Regulators LT1373 - 250kHz Low Supply Current High Efficiency 1.5A Switching Regulator

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Description

The LT1373CS8 is a high-efficiency step-up switching regulator IC designed by Linear Technology (now part of Analog Devices). It is typically used in applications requiring the conversion of a low input voltage to a higher output voltage, making it suitable for devices like battery-powered gadgets, LCD bias supplies, or other portable electronics.
Key features of the LT1373CS8 include:
1. Output Voltage: Adjustable output voltage, typically ranging from 3.3V to 12V.
2. Efficiency: High efficiency, often above 80%, which is critical for battery-powered applications.
3. Current Capability: Can deliver significant output currents, usually up to 1A depending on external components and input/output voltage conditions.
4. Package: Comes in an 8-pin SOIC package, making it compact for space-constrained designs.
5. Switching Frequency: Operates at a fixed 550 kHz frequency, which helps reduce external component size.
6. Protection Features: Includes features like thermal shutdown and overcurrent protection to enhance reliability and safety.
The LT1373CS8 is favored for its ease of use, reliability, and ability to maintain a stable output over a wide range of conditions.

Equivalent

The LT1373CS8 is a step-up/step-down switching regulator. Equivalent products may include the following:
1. Texas Instruments: TPS61093, which is also a boost converter.
2. Microchip Technology: MCP1640, a similar DC-DC converter.
3. Analog Devices: ADP1613, offering boost capability.
While these products offer similar functionalities, it's essential to verify the specifications and pin compatibility for exact equivalency in your application.

Features

The LT1373CS8 is a step-up switching regulator designed by Linear Technology (now part of Analog Devices). Key features include:
1. Input Voltage Range: Operates efficiently with a wide input voltage range.
2. Output Voltage: Capable of producing higher output voltages than the input, useful for boosting applications.
3. Switching Frequency: Typically around 570kHz, allowing for smaller external components and efficient operation.
4. Output Current: Delivers up to 1.5A, suitable for powering moderate loads.
5. Efficiency: High efficiency, often over 80%, which reduces heat and power loss.
6. Shutdown Pin: Includes a shutdown feature to minimize power consumption when not in use.
7. Package: Available in an 8-pin SOIC (Small Outline Integrated Circuit) package, ensuring ease of use in compact designs.
8. Protection Features: Built-in current limiting and thermal shutdown to protect against overloads and overheating.
These features make the LT1373CS8 suitable for applications like battery-powered devices, portable electronics, and any system requiring a stable, boosted power supply.

Pinout

The LT1373CS8 is a step-up/step-down switching regulator integrated circuit. It comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a concise description of its pin functions:
1. SW (Pin 1): This is the switch output pin. It connects to the inductor and is the point where the converter output is switched.
2. GND (Pin 2): Ground pin for the device.
3. FB (Pin 3): Feedback pin used to sense the output voltage. It is connected to a resistor divider network from the output.
4. VC (Pin 4): Compensation pin. This is used to stabilize the control loop of the regulator.
5. SHDN (Pin 5): Shutdown pin. A low signal disables the regulator, reducing the input current to a low standby level.
6. VIN (Pin 6): Input voltage pin. Supplies power to the device.
7. SENSE (Pin 7): Current sense pin. Used for current limiting and regulation.
8. VSW (Pin 8): This is the collector of the internal NPN power switch, connected to the inductor.
These functions allow the LT1373CS8 to efficiently manage voltage conversion in power supply applications.

Manufacturer

The LT1373CS8 is manufactured by Linear Technology Corporation. Linear Technology was a company specializing in designing and manufacturing analog integrated circuits for a wide range of applications such as power management, data conversion, signal conditioning, and more. It was known for its high-performance analog products used in telecommunications, automotive, industrial, and consumer electronics sectors. In 2017, Linear Technology was acquired by Analog Devices, Inc., another prominent company in the semiconductor industry. Analog Devices continues to offer products originally developed by Linear Technology and is known for its comprehensive portfolio of analog, mixed-signal, and digital signal processing (DSP) integrated circuits.

Application

The LT1373CS8 is a switching regulator IC designed for efficient power conversion in various applications. Key application areas include battery-powered devices, where its high efficiency extends battery life; portable electronics, such as smartphones and tablets, for compact and reliable power management; and automotive electronics, where it supports stable voltage regulation despite fluctuating supply conditions. Additionally, it can be used in industrial control systems, telecommunications equipment, and any application requiring step-up, step-down, or inverting power conversion. Its small footprint and versatility make it suitable for space-constrained designs, providing reliable performance in demanding environments.

Package

The LT1373CS8 is typically housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. This package is compact and commonly used for surface-mount technology, making it suitable for applications where space is limited.

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