LTC3612IUDC

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LTC3612IUDC

IC REG BUCK ADJ 3A 20QFN

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規格

Part Status Obsolete
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 2.25V
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 0.6V
Voltage - Output (Max) 5.5V
Current - Output 3A
Frequency - Switching 300kHz ~ 4MHz
Synchronous Rectifier Yes
Operating Temperature -55°C ~ 150°C (TJ)
Mounting Type Surface Mount
Package / Case 20-WFQFN Exposed Pad
Supplier Device Package 20-QFN (3x3)
Base Product Number LTC3612

概述

Description

The LTC3612IUDC is a high-efficiency, step-down DC/DC converter designed by Analog Devices (formerly Linear Technology). It operates over a wide input voltage range of 4.5V to 15V and is capable of delivering up to 2A of output current. The device features a synchronous architecture, which enhances efficiency by minimizing switching losses and improving thermal performance.
Key characteristics include a high switching frequency of up to 3MHz, allowing for the use of small external components and compact designs. The LTC3612IUDC supports adjustable output voltages, which can be set within a range of 0.8V to 5V, making it versatile for various applications. It also includes features like an internal compensation loop, soft-start, and short-circuit protection, which enhance reliability and ease of use.
Overall, the LTC3612IUDC is suitable for applications in portable devices, telecom equipment, and industrial systems where space and efficiency are critical.

Features

The LTC3612IUDC is a high-efficiency buck regulator designed for applications requiring a compact power solution. Key features include:
1. Input Voltage Range: 3V to 15V, making it suitable for various power sources.
2. Output Current: Up to 3A continuous output current with low dropout.
3. High Efficiency: Up to 95% efficiency, reducing heat generation and improving thermal performance.
4. Programmable Output Voltage: Adjustable output voltage down to 0.6V with an external resistor divider.
5. Low Quiescent Current: Typically 2.5mA, allowing for better performance in battery-powered applications.
6. Fast Transient Response: Enables stable operation under load changes.
7. I2C Interface: For configuration and monitoring, providing flexibility in design.
8. Thermal Protection and Short-Circuit Protection: Enhances reliability and safety.
9. Small Package Size: Available in a compact 3mm x 4mm QFN package, helping to save board space.
These features make the LTC3612IUDC ideal for a wide range of applications, including portable devices and industrial systems.

Package

The LTC3612IUDC is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) with a 4mm x 4mm footprint.

Pinout

The LTC3612IUDC is a high-performance synchronous buck regulator from Analog Devices. It features a 20-pin 3mm × 3mm LQFN package.
The pin functions are as follows:
1. VIN - Input supply voltage.
2. SW - Switch node.
3. GND - Ground.
4. VOUT - Output voltage.
5. COMP - Compensation network connection.
6. FB - Feedback voltage input for regulation.
7. SS - Soft-start pin.
8. MODE - Mode selection for operation.
9. SENSE+ - Positive input for current sense.
10. SENSE- - Negative input for current sense.
11. RBIAS - Bias resistor connection.
12. PG - Power good indicator.
13. ILIM - Current limit setting.
14-20. Additional pins for various functions such as clock synchronization, frequency setting, and additional control/feedback features.
For detailed information, refer to the specific datasheet of LTC3612IUDC.

Manufacturer

The LTC3612IUDC is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in data conversion, signal processing, and power management solutions. Founded in 1965 and headquartered in Norwood, Massachusetts, the company serves a wide range of industries, including automotive, communications, industrial, and consumer electronics. They are known for their high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in various applications, from precision instrumentation to advanced telecommunications.

Application

The LTC3612IUDC is a high-efficiency step-down DC/DC converter primarily used in applications such as powering FPGA, DSP, and other digital processors, as well as in battery-powered devices, industrial equipment, and telecommunications. It is suitable for systems requiring high output current, low ripple, and precise voltage regulation, often found in consumer electronics, medical devices, and automotive applications.

Equivalent

Equivalent products to the LTC3612IUDC include the LTC3614, LTC3615, and the LM22673. These alternatives provide similar functionalities in step-down (buck) converter applications with comparable voltage and current specifications. Always verify specific parameters such as input/output voltage range, efficiency, and package type to ensure compatibility.

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