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LTC1625IS

Name: LTC1625IS
Rating: 4.7 (12 reviews)

Switching Voltage Regulators LTC1625 - No RSENSE Current Mode Synchronous Step-Down Switching Regulator

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データシート LTC1625IS DataSheet
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仕様

概要

Description

The LTC1625IS is a high-performance voltage regulator chip designed for DC-DC conversion applications. It belongs to the family of switching regulators and features a built-in synchronous rectifier, which enhances efficiency by minimizing power loss during operation. The device can deliver a wide output voltage range and is capable of handling high load currents, making it suitable for various applications in communications, computing, and industrial equipment.
Key features include adjustable output voltage, low supply current, and a wide input voltage range, typically from 4.5V to 36V. The LTC1625IS also offers integrated protection mechanisms such as overvoltage and overcurrent protection, ensuring reliable operation. Its compact 20-lead TSSOP package allows for easy integration into space-constrained designs. Overall, the LTC1625IS is ideal for designers seeking efficient, robust, and flexible power management solutions.

Features

The LTC1625IS is a high-performance, step-down (buck) switching regulator designed for high-efficiency power conversion. Key features include:
1. Input Voltage Range: 4.5V to 60V, allowing for versatile applications.
2. Output Voltage: Adjustable output voltage, typically ranging from 1.25V to 55V.
3. High Efficiency: Typically up to 95%, reducing heat and improving reliability.
4. Switching Frequency: Adjustable frequency up to 1MHz, enabling the use of small external components.
5. Current Limit: Built-in current limiting for enhanced protection.
6. Thermal Shutdown: Integrated thermal protection to prevent overheating.
7. Power Good Signal: Output voltage monitoring for system feedback.
8. Soft-Start Feature: Reduces inrush current during startup.
9. Compact Package: Available in an SO-8 package for space-saving designs.
The LTC1625IS is suitable for a variety of applications, including industrial, automotive, and telecommunications, where efficiency and reliability are critical.

Package

The LTC1625IS is packaged in an 8-lead SOIC (Small Outline Integrated Circuit) format.

Pinout

The LTC1625IS is a 16-pin integrated circuit (IC) used primarily as a voltage regulator controller. It features a voltage mode architecture designed for high-performance power supply applications.
The pin functions include:
1. VIN: Input voltage.
2. GND: Ground reference.
3. VOUT: Output voltage feedback.
4. CSN: Current sense negative input.
5. CSP: Current sense positive input.
6. SW: Switch node connection to the inductor.
7. COMP: Compensation network connection.
8. RAMP: Ramp generator connection for PWM.
9. SS: Soft-start input.
10. RT: Timing resistor input for frequency setting.
11. PGND: Power ground.
12. SYNC: Synchronization input.
13. SLOPE: Slope compensation input.
14. EN: Enable input.
15. ILIM: Current limit setting.
16. FAULT: Fault indication output.
These functionalities allow for precise control of output voltage and current in various applications, enhancing power efficiency and stability.

Manufacturer

The LTC1625IS is manufactured by Analog Devices, Inc. Analog Devices is a global company that specializes in designing and producing high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). Founded in 1965, the company primarily serves sectors such as communications, automotive, industrial automation, healthcare, and consumer electronics. Analog Devices is known for its innovative solutions in precision signal processing and has a strong emphasis on research and development to meet the evolving needs of its diverse customer base. The LTC1625IS specifically is a high-efficiency, step-down (buck) switching regulator, indicating the company's focus on power management solutions.

Application

The LTC1625IS is a high-performance voltage regulator primarily used in applications such as digital signal processors (DSPs), field-programmable gate arrays (FPGAs), and microcontrollers. It is ideal for powering communications equipment, portable devices, and battery-operated systems due to its low quiescent current and high efficiency. Additionally, it is suitable for point-of-load regulation in complex power management systems and can be used in automotive and industrial applications for reliable voltage regulation under varying load conditions.

Equivalent

The LTC1625IS is a high-speed, dual-channel voltage regulator controller. Equivalent products include:
1. TPS40051 (Texas Instruments)
2. LM2596 (Texas Instruments)
3. LTC1621 (Analog Devices)
4. LM2675 (Texas Instruments)
These alternatives may have different specifications, so verify compatibility based on your application's requirements.