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LT3990EDD#TRPBF

Name: LT3990EDD#TRPBF
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ 350MA 10DFN

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資料表 LT3990EDD#TRPBF DataSheet
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規格

Part Status	Active
Function	Step-Down
Output Configuration	Positive
Topology	Buck
Output Type	Adjustable
Number of Outputs	1
Voltage - Input (Min)	4.2V
Voltage - Input (Max)	62V
Voltage - Output (Min/Fixed)	1.21V
Voltage - Output (Max)	25V
Current - Output	350mA
Frequency - Switching	210kHz ~ 2.3MHz
Synchronous Rectifier	No
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	10-WFDFN Exposed Pad
Supplier Device Package	10-DFN (3x3)
Base Product Number	LT3990

概述

Description

The LT3990EDD#TRPBF is a high-efficiency LED driver from Analog Devices (formerly Linear Technology). It is designed for powering multiple high-brightness LEDs with a wide input voltage range, typically from 4.5V to 60V. This device operates in constant current mode, ensuring uniform brightness across LED arrays, and can handle outputs up to 1A.
Key features include a built-in switch for boost, buck-boost, or buck configurations, making it versatile for various applications. The LT3990 includes integrated compensation and protection features, such as over-voltage protection and thermal shutdown, enhancing reliability. It also supports dimming via PWM or analog methods, allowing for greater control over brightness levels.
Designed for applications in automotive lighting, architectural lighting, and industrial lighting, the LT3990EDD#TRPBF excels in efficiency and performance. Its compact package and ease of integration make it a popular choice for engineers seeking a robust LED driving solution.

Features

The LT3990EDD#TRPBF is a high-efficiency, constant-current LED driver designed for driving multiple LEDs in series. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various power sources.
2. High Efficiency: Typically achieves efficiency over 90% to minimize heat generation.
3. Constant Current Control: Delivers a stable output current, adjustable from 10mA to 1.5A, ensuring uniform brightness in LED applications.
4. Thermal Protection: Includes thermal shutdown features to prevent damage in case of overheating.
5. Simple Dimming Control: Supports PWM dimming, allowing for easy brightness adjustments.
6. Built-in Soft Start: Reduces inrush current during startup, enhancing circuit reliability.
7. Small Package Size: Available in a compact 16-lead TSSOP package, facilitating space-saving designs.
These features make the LT3990EDD#TRPBF suitable for various applications, including automotive, industrial, and general lighting.

Package

The LT3990EDD#TRPBF is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) format.

Pinout

The LT3990EDD#TRPBF is a high-voltage, step-down LED driver with a total of 16 pins. It is designed for driving high-power LEDs efficiently. Key functions of the pins include:
1. VIN: Input voltage supply for the driver.
2. GND: Ground connection.
3. SW: Switch node connecting to the inductor.
4. VOUT: Output voltage to the LED load.
5. COMP: Compensation pin for stability of the control loop.
6. CSN/ CSP: Current sense pins for monitoring the LED current.
7. Rset: Resistor connection to set the output current.
8. ILIM: Current limit pin for overcurrent protection.
9. ENABLE: Enable/disable the device.
10. FAULT: Fault indication output.
11. CT: Capacitor connection for timing.
12. SYNC/SS: Synchronization or soft-start function.
For detailed specifications, refer to the manufacturer's datasheet.

Manufacturer

The LT3990EDD#TRPBF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company that specializes in designing and manufacturing analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). The company serves a wide range of industries, including automotive, telecommunications, healthcare, and industrial automation, offering solutions for various applications such as data conversion, signal processing, and power management. Analog Devices is known for its innovative technologies and high-performance components, catering to both consumer and industrial markets.

Application

The LT3990EDD#TRPBF is a high-voltage, synchronous step-down regulator primarily used in applications such as automotive power supplies, industrial equipment, and communication systems. It is suitable for powering microcontrollers, sensors, and other low-voltage devices from higher voltage sources. Its features include high efficiency, low output ripple, and a wide input voltage range, making it ideal for battery management and energy-efficient designs.

Equivalent

The LT3990EDD#TRPBF is a high-efficiency LED driver. Equivalent products include the TPS92641-Q1 from Texas Instruments, the MAX16832 from Maxim Integrated, and the ISL79985 from Renesas. Always verify specifications such as voltage range, current ratings, and features to ensure compatibility for your specific application.