LTC1625CS

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LTC1625CS

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

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Spécifications

Vue d'ensemble

Description

The LTC1625CS is a high-performance voltage regulator specifically designed for step-down (buck) applications. It operates with a wide input voltage range (typically 4.5V to 30V) and provides adjustable output voltages down to 1.25V. The device features a current-mode control architecture, which enhances stability and transient response.
Key characteristics include a 1.5A continuous output current capability, high efficiency (up to 95%), and a switching frequency that can be programmed between 100kHz to 1MHz, allowing for optimization of the inductor size and efficiency. The LTC1625CS also incorporates protection features like overcurrent protection and thermal shutdown, ensuring reliable operation under various conditions.
This regulator is suitable for applications in telecommunications, automotive, and industrial systems, where efficient power conversion is crucial. Its compact package and easy-to-use design make it a popular choice for engineers seeking reliable power solutions in their designs.

Features

The LTC1625CS is a high-performance, synchronous step-down (buck) DC-DC converter designed for efficient power regulation. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power supply configurations.
2. Output Current Capability: Delivers up to 2A of continuous output current, suitable for many applications.
3. High Efficiency: Achieves efficiencies up to 95%, minimizing heat generation and improving thermal performance.
4. Adjustable Output Voltage: Output voltage adjustable from 0.8V to 60V, allowing flexibility for different applications.
5. Synchronous Operation: Uses synchronous rectification to enhance efficiency and reduce component count.
6. Integrated MOSFETs: Internal high-side and low-side MOSFETs reduce the need for external components.
7. Low Quiescent Current: Ensures minimal power consumption during idle states, ideal for battery-operated devices.
8. Short-Circuit Protection: Incorporates features to protect against output short circuits and thermal overload.
9. Available Packages: Offered in a compact 16-lead SOIC package for space-constrained applications.
These features make the LTC1625CS ideal for automotive, industrial, and consumer electronics applications.

Package

The LTC1625CS is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package). This surface-mount package type is designed for space-constrained applications, offering a compact footprint and efficient thermal performance.

Pinout

The LTC1625CS is a high-performance switching regulator controller with a pin count of 16. Its primary function is to regulate output voltage with high efficiency in DC-DC converter applications.
Key pin functions include:
1. VIN - Input voltage supply.
2. GND - Ground reference.
3. SW - Switch node for the power stage.
4. COMP - Compensation network connection for stability.
5. RAMP - Ramp generator input for PWM control.
6. CSN/ CSP - Current sense inputs for overcurrent protection.
7. RT - Timing resistor for setting oscillator frequency.
8. SYNC - Synchronization input for external clocking.
9. VREF - Reference voltage output for feedback.
10. FB - Feedback input for voltage regulation.
11. SS - Soft-start control for gradual output voltage increase.
12. ILIM - Current limit setting.
13. TRK - Tracking control for output voltage sequencing.
14. PWM - Pulse-width modulation control.
15. SLOPE - Slope compensation input.
16. PGND - Power ground for high-current paths.
This versatile chip is commonly used in power supply designs for its efficiency and flexibility.

Manufacturer

The LTC1625CS is manufactured by Analog Devices, Inc. Analog Devices is a global company specializing in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company is headquartered in Norwood, Massachusetts, and serves various industries, including communications, consumer electronics, automotive, and industrial applications. Their products are widely used for signal processing, data conversion, and power management solutions.

Application

The LTC1625CS is a high-performance voltage mode PWM controller primarily used in applications such as DC-DC converters, power supplies, voltage regulation for microprocessors, and battery chargers. It is suitable for high-frequency switching applications, providing features like adjustable output voltage, overcurrent protection, and soft-start capabilities. Its efficiency and precision make it ideal for telecom, industrial, and automotive power management solutions.

Equivalent

The LTC1625CS is a high-performance, synchronous step-down (buck) DC-DC converter. Equivalent products include:
1. LM2675 - Texas Instruments
2. RT8206 - Richtek
3. TPS563201 - Texas Instruments
4. MICREL MIC4504 - Microchip
5. LT1763 - Analog Devices (for specific applications)
Always check datasheets for specifications to ensure compatibility with your application.

Expédition

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FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.

EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.

Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.

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