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LT3491EDC

Name: LT3491EDC
Rating: 4.7 (12 reviews)

LED Lighting Driver ICs LT3491 - White LED Driver in SC70 with Integrated Schottky

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データシート LT3491EDC DataSheet
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仕様

概要

Description

The LT3491EDC is a high-efficiency, step-down (buck) DC-DC converter designed by Analog Devices, specifically for powering devices that require a regulated output voltage from a higher input voltage. It features a wide input voltage range, typically from 4.5V to 60V, making it suitable for various applications, including industrial and automotive systems.
Key features include a high switching frequency, which allows for smaller external components and reduced PCB area. The LT3491EDC also offers excellent load and line regulation, low quiescent current, and a variety of protection features, such as over-voltage and over-temperature protection, ensuring reliable operation across different conditions.
It supports a variety of output voltages, adjustable via external resistors, and has a built-in soft-start function to minimize inrush current during startup. Overall, the LT3491EDC is ideal for designers seeking a robust and efficient power management solution in compact applications.

Features

The LT3491EDC is a high-performance, low-noise, boost converter designed specifically for powering LED applications. Key features include:
1. Input Voltage Range: Operates from a wide input voltage range of 2.5V to 30V.
2. Output Current: Capable of delivering up to 1A output current.
3. Efficiency: High efficiency (up to 95%) reduces heat generation and improves battery life.
4. Adjustable Output Voltage: Output voltage can be adjusted to match specific LED requirements.
5. Low Quiescent Current: Minimizes power consumption in standby mode.
6. Soft-Start: Integrated soft-start feature to prevent inrush current during startup.
7. Compact Package: Available in a compact DFN or TSSOP package for space-constrained designs.
8. Short-Circuit Protection: Includes protection features to safeguard against short circuits and overload conditions.
These features make the LT3491EDC an excellent choice for portable and battery-operated LED lighting applications.

Package

The LT3491EDC is available in a 10-lead MSOP (Mini Small Outline Package) type. This compact package is designed for space-constrained applications while providing effective thermal performance.

Pinout

The LT3491EDC is a high-performance, low-power, triple output DC/DC converter from Analog Devices. It comes in a 16-lead LFCSP (Lead Frame Chip Scale Package) with a pin count of 16.
### Pin Functions:
1. VIN: Input supply voltage.
2. GND: Ground reference.
3. SW: Switch node for the boost converter.
4. BOOST: Boost voltage for the switching converter.
5. VOUT1: Output voltage for the first channel.
6. VOUT2: Output voltage for the second channel.
7. VOUT3: Output voltage for the third channel.
8. COMP: Compensation network for stability.
9. FB1: Feedback for the first output voltage.
10. FB2: Feedback for the second output voltage.
11. FB3: Feedback for the third output voltage.
12. ISET: Current setting resistor connection.
13. RTP: Remote temperature sensing.
14. SYNC: Synchronization input for external clock.
15. RUN: Enable pin to turn the device on/off.
16. PGND: Power ground for the switching node.
These functions enable the LT3491EDC to efficiently manage multiple output voltages in various applications.

Manufacturer

The LT3491EDC is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in data conversion, signal processing, and amplification technologies. Founded in 1965, the company develops a wide range of analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) for various applications, including telecommunications, automotive, industrial, and consumer electronics. Analog Devices is known for its high-performance components that enable efficient processing of real-world signals, making it a key player in the semiconductor industry.

Application

The LT3491EDC is a high-efficiency, low-power boost converter typically used in portable devices, battery-powered applications, and energy harvesting systems. It is suitable for driving LED backlights, powering RF transmitters, and supplying voltage to sensors and microcontrollers in wearable technology, IoT devices, and mobile gadgets. Its ability to operate efficiently at low input voltages makes it ideal for applications where battery life is critical.

Equivalent

The LT3491EDC is a low-noise, high-performance operational amplifier. Equivalent products include:
1. OPA2134 (Texas Instruments)
2. AD8510 (Analog Devices)
3. LMV324 (Texas Instruments)
4. TLV2371 (Texas Instruments)
5. MCP6002 (Microchip)
These alternatives may vary in specifications, so be sure to check for specific parameters like bandwidth, noise, and power supply requirements.