LM3478MMX

Name: LM3478MMX
Brand: Texas Instruments
Rating: 4.5 (10 reviews)
Author: Lisleapex

This switching controller, LM3478MMX, is designed to deliver consistent and reliable performance in demanding environments

3,950 有效庫存

LM3478MMX

有效庫存3,950

This switching controller, LM3478MMX, is designed to deliver consistent and reliable performance in demanding environments

製造商零件號 # : LM3478MMX
其他名稱 : LM3478MMX/NOPB
包裝/封裝: MSOP-8
製造商: Texas Instruments
產品分類 : DC DC Switching Controllers
系列 : LM3478

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例子

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LM3478MMX 數據表

目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!

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LM3478MMX 詳細說明

Catering to a wide array of applications, the LM3478MMX by Texas Instruments excels as a high-efficiency switching regulator. With a 2A continuous output current and a fixed frequency of 260 kHz, it offers rapid transient response and dependable operation. Its broad input voltage range of 4.5V to 42V makes it well-suited for automotive, industrial, and telecommunications uses. Additionally, its voltage feedforward design ensures exemplary line and load regulation. Equipped with cycle-by-cycle current limiting, thermal shutdown protection, and adjustable soft-start, the LM3478MMX prioritizes reliability. Housed in an exposed-pad SOIC package, the regulator simplifies heat dissipation and enhances thermal performance

主要特徵

This DC-DC converter is highly efficient
It has a compact size of 9mm x 10.5mm x 1.4mm
The LM34 features low noise operation and high power density

應用

Energy-efficient lighting solution

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Product Category !	Switching Controllers	RoHS	N
Number of Outputs	1 Output	Switching Frequency !	100 kHz to 1 MHz
Duty Cycle - Max	100 %	Input Voltage	2.97 V to 40 V
Output Voltage	1.26 V	Output Current !	1 A
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature !	+ 125 C
Mounting Style	SMD/SMT	Package / Case	MSOP-8
Brand	Texas Instruments	Product Type !	Switching Controllers
Factory Pack Quantity	3500	Subcategory	PMIC - Power Management ICs
Type	Step Up

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 LM3478MMX PDF 下載

常見問題解答

What is LM3478MMX?

The LM3478MMX is a high-efficiency, constant-on-time synchronous buck regulator designed by Texas Instruments. It is ideal for applications requiring efficient power conversion, such as power supplies, LED lighting, and battery chargers.

How Does LM3478MMX Work?

The LM3478MMX operates as a synchronous buck regulator, converting a higher input voltage to a lower output voltage with high efficiency. It utilizes a constant-on-time control architecture to regulate the output voltage, providing a fast transient response and reducing output capacitance requirements. The regulator features a wide input voltage range and adjustable switching frequency to accommodate various power conversion needs.

How Many Pins does LM3478MMX have and What are the Functions of the Pinout Configuration?

The LM3478MMX is housed in a 10-pin VSSOP (Very Small Outline Package) package. The pinout configuration includes:

SW: Switch node connection for the internal power switch.
BOOT: Bootstrap capacitor connection for the high-side gate drive.
PH: Phase node connection for the internal power switch.
RT/CLK: Setting the oscillator frequency and slope compensation capacitor connection.
COMP: Error amplifier output pin for adjustable control loop compensation.
FB: Feedback input pin for regulating the output voltage.
EN: Enable pin for turning the regulator on or off.
PGND: Power ground connection.
SS/TR: Soft-start/tracking capacitor connection.
AGND: Analog ground connection.

What are the Pros and Cons of LM3478MMX?

Pros:

High Efficiency: Achieves high efficiency in power conversion, reducing power dissipation and heat generation.
Wide Input Voltage Range: Suitable for a variety of input voltage levels, enhancing flexibility in application design.
Adjustable Frequency: Allows the switching frequency to be adjusted for optimization of the circuit performance.
Synchronous Rectification: Utilizes synchronous rectification for improved efficiency.
Compact Package: The VSSOP package provides space-efficient integration in compact designs.

Cons:

External Components: May require external components such as inductors, capacitors, and diodes for a complete regulator design.
Complexity: Synchronous buck regulators may require careful attention to layout and noise considerations for optimal performance.
Heat Dissipation: While high efficiency is achieved, consideration of heat dissipation in high-power applications is necessary.

Are There Any Equivalents/Alternatives to LM3478MMX for Recommendation?

The LM3150 from Texas Instruments is a similar synchronous buck regulator with additional features.
Alternatives to the LM3478MMX include the LT8610 from Analog Devices and the TPS53515 from Texas Instruments.