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LT3990IDD#PBF

Name: LT3990IDD#PBF
Rating: 4.7 (12 reviews)

IC REG BUCK ADJ 350MA 10DFN

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Mfr.부분 #LT3990IDD#PBF
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데이터시트 LT3990IDD#PBF DataSheet
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사양

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

개요

Description

The LT3990IDD#PBF is a high-efficiency step-down (buck) switching regulator designed by Analog Devices, specifically optimized for automotive and industrial applications. It features an input voltage range of 4V to 60V, making it suitable for a variety of power sources. The device can deliver output currents up to 2A and offers adjustable output voltages with high accuracy.
Key features include a built-in low RDS(ON) switch to improve efficiency, a wide operating temperature range, and various protection mechanisms such as overcurrent and thermal shutdown. The LT3990 also supports a frequency range that can be configured to optimize performance in different applications.
Its compact package and integrated design make it ideal for space-constrained environments, while its robust performance ensures reliability in demanding conditions. The LT3990IDD#PBF is commonly used in applications like automotive power supplies, industrial automation, and communication equipment.

Features

The LT3990IDD#PBF is a high-performance LED driver from Analog Devices designed for high-brightness LED applications. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power sources.
2. High Efficiency: Up to 95% efficiency helps minimize heat generation and power loss.
3. Constant Current Regulation: Provides precise control of LED current, ensuring uniform brightness.
4. Switching Frequency: Adjustable frequency up to 1MHz allows optimization for size and efficiency.
5. Integrated Power MOSFETs: Reduces external component count and simplifies design.
6. Thermal Protection: Built-in thermal shutdown protects against overheating.
7. Dimming Control: Supports PWM dimming with a wide range of dimming ratios.
8. Compact Package: Available in a thermally-enhanced TSSOP-20 package for space-constrained applications.
These features make the LT3990IDD#PBF suitable for a variety of applications, including automotive lighting, architectural lighting, and general illumination.

Package

The LT3990IDD#PBF is packaged in a 16-lead TSSOP (Thin Shrink Small Outline Package) type.

Pinout

The LT3990IDD#PBF is a high-voltage LED driver manufactured by Analog Devices. It features a 16-pin TSSOP (Thin Shrink Small Outline Package) configuration.
Key functions of its pins include:
1. VIN: Input voltage supply for the driver.
2. GND: Ground reference.
3. SW: Switch node for the internal power MOSFET.
4. CSN/ CSP: Current sense inputs for LED current regulation.
5. COMP: Compensation network connection for stability.
6. Rset: Resistor connection to set output current.
7. LX: Inductor connection for boost or buck-boost configurations.
8. Iref: Reference current output.
9. EN: Enable pin to turn the IC on or off.
10. PWM: Pulse width modulation control for dimming.
11. FAULT: Output for fault detection.
This device is designed for efficient driving of high-brightness LEDs in various applications, such as automotive and industrial lighting.

Manufacturer

The LT3990IDD#PBF is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a multinational company that designs and manufactures a wide range of analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). Founded in 1965, the company is known for its innovative solutions in various sectors, including communications, consumer electronics, automotive, industrial automation, and healthcare. ADI's products are widely used in applications that require high-performance signal processing and precision measurement.

Application

The LT3990IDD#PBF is a high-efficiency, synchronous step-down regulator designed for applications such as automotive, industrial, and telecommunications. It is suitable for powering microcontrollers, FPGAs, and other digital loads, as well as providing bias supplies for RF and analog circuits. Its features enable efficient conversion in space-constrained designs, making it ideal for battery-operated devices and high-performance applications needing precise voltage regulation.

Equivalent

The LT3990IDD#PBF is a high-power LED driver. Equivalent products include the following:
1. MAX16834 - LED driver with PWM dimming.
2. TPS92641-Q1 - Automotive LED driver with diagnostics.
3. LTC3702 - High-efficiency LED driver.
4. LM3405 - Constant current LED driver.
Always verify specifications and compatibility for your particular application.