LM2731XMFX

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LM2731XMFX

IC REG BOOST ADJ 1.8A SOT23-5

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仕様

Part Status Obsolete
Function Step-Up
Output Configuration Positive
Topology Boost
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 2.7V
Voltage - Input (Max) 14V
Voltage - Output (Min/Fixed) 2.7V
Voltage - Output (Max) 22V (Switch)
Current - Output 1.8A (Switch)
Frequency - Switching 1.6MHz
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-23-5
Base Product Number LM2731

概要

Description

The LM2731XMFX is a high-efficiency, step-up (boost) DC-DC converter designed for portable power applications. It features a wide input voltage range of 2.3V to 5.5V, making it suitable for powering devices from single-cell lithium-ion batteries or other low-voltage sources. The device can deliver output voltages up to 28V, enabling it to drive a variety of loads, including LEDs and RF power amplifiers.
Key features include a built-in switch, adjustable output voltage, and high efficiency (up to 95%). It operates in a PWM mode, allowing for reduced output ripple and improved transient response. The LM2731XMFX also includes over-current protection and thermal shutdown for enhanced reliability. Its compact package makes it ideal for space-constrained designs.
This converter is suitable for applications in portable electronics, battery-powered devices, and energy harvesting systems, where efficient power conversion is critical. Overall, the LM2731XMFX is a versatile and efficient solution for boosting voltage in low-power applications.

Features

The LM2731XMFX is a high-efficiency step-up (boost) DC-DC converter designed for portable applications. Key features include:
1. Input Voltage Range: Operates from 2.5V to 5.5V, suitable for Li-ion and Li-polymer batteries.
2. Output Voltage: Adjustable output voltage up to 28V, making it versatile for various applications.
3. Max Output Current: Delivers up to 1A output current, ensuring sufficient power for demanding loads.
4. Efficiency: High efficiency (up to 95%) to maximize battery life.
5. Switching Frequency: Operates at a fixed frequency of 1.2 MHz, allowing for smaller external components.
6. Integrated Components: Includes internal switch and compensation, reducing the number of external parts required.
7. Protection Features: Offers over-voltage protection (OVP) and thermal shutdown for enhanced reliability.
8. Package: Available in a compact 6-pin SOT-23 package, ideal for space-constrained designs.
These features make the LM2731XMFX suitable for applications like LED drivers, battery-powered devices, and portable electronics.

Package

The LM2731XMFX is packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package) format.

Pinout

The LM2731XMFX is a high-frequency, step-up (boost) voltage regulator with a pin count of 8. Its primary functions include:
1. VIN (Pin 1): Input voltage supply.
2. SW (Pin 2): Switch node for connecting to the inductor.
3. GND (Pin 3): Ground reference.
4. COMP (Pin 4): Compensation node for controlling the feedback loop stability.
5. FB (Pin 5): Feedback pin for setting the output voltage.
6. Rset (Pin 6): Resistor connection for setting the output voltage.
7. EN (Pin 7): Enable pin to turn the device on or off.
8. VOUT (Pin 8): Output voltage.
The LM2731 is designed for applications requiring voltage boosting, efficiency, and compact size, making it suitable for battery-powered devices.

Manufacturer

The LM2731XMFX is manufactured by Texas Instruments (TI), a leading semiconductor company. Texas Instruments designs and produces a wide range of electronics, including analog and embedded processing chips. Established in 1930, the company is well-known for its innovations in analog, digital signal processing, and microcontroller technologies. TI serves various industries, including automotive, industrial, communications, and consumer electronics, providing solutions for power management, signal processing, and data conversion. The LM2731XMFX specifically is a DC-DC switching regulator used for efficient power conversion in electronic devices.

Application

The LM2731XMFX is a high-efficiency step-up (boost) voltage regulator primarily used in portable devices. Key application areas include battery-powered electronics, LED drivers, and power management for handheld devices, portable audio systems, and wireless communication devices. Its compact design and adjustable output make it suitable for various consumer electronics requiring voltage boosting from lower battery levels.

Equivalent

The LM2731XMFX is a step-up DC-DC converter. Equivalent products include the TPS61030, LTC6105, and MAX860. Each offers similar voltage boost capabilities, but check specifications like input/output voltage range, current capacity, and package type for compatibility in your application.

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出荷料参照(DHL/FedEx):

DHL の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は2〜5営業日です。

フェデックス: 配送費は25ドル〜40ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。

UPS の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。

TNT社: 配送費は25ドル〜65ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。

EMS: 配送料金は30〜50ドル(0.5kg)の範囲で、推定配送時間は7〜15営業日です。

登録航空郵便: 配送費は2〜4ドル(0.1kg)で、推定配送時間は5〜20営業日です。

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