LM3100MH

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LM3100MH

IC REG BUCK ADJ 1.5A 20HTSSOP

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  • 包 HTSSOP (PWP)-20
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規格

Package Tube
Series SIMPLE SWITCHER®
ProductStatus Not For New Designs
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 4.5V
Voltage-Input(Max) 36V
Voltage-Output(Min/Fixed) 0.8V
Voltage-Output(Max) 7.2V
Current-Output 1.5A
Frequency-Switching Up to 1MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 20-PowerTSSOP (0.173, 4.40mm Width)

概述

Description

The LM3100MH is a synchronous buck regulator from Texas Instruments, designed for efficient step-down DC-DC conversion. It is part of the SIMPLE SWITCHER® family, known for ease of use and reliability in power management applications. This device operates with an input voltage range of 4.5V to 42V and can deliver output currents up to 1.5A.
Key features include a fixed-frequency operation of 300 kHz, which helps in minimizing external component size, and an adjustable output voltage via an external resistor divider. The LM3100MH also offers protection features like thermal shutdown, current limiting, and undervoltage lockout to enhance system reliability.
Typical applications for the LM3100MH include automotive, industrial, and computing systems where space efficiency and power performance are crucial. Its high efficiency, typically over 90% in many applications, makes it suitable for battery-powered devices as well. The package type is an 8-Pin SO PowerPAD (MH), which helps in thermal performance and compact design.

Features

The LM3100MH is a step-down switching voltage regulator designed by Texas Instruments. Key features include:
1. Wide Input Voltage Range: It supports an input voltage range from 4.5V to 42V, making it suitable for various applications.
2. Adjustable Output Voltage: The device allows for an adjustable output voltage ranging from 0.8V to 37V, providing flexibility for different voltage requirements.
3. High Efficiency: The LM3100MH boasts efficiency up to 95%, which helps in reducing power loss and heat generation.
4. Synchronous Rectification: This feature enhances efficiency by reducing the diode conduction losses.
5. Fixed Frequency Operation: It operates at a fixed frequency, which simplifies the design of the input and output filters.
6. Integrated MOSFETs: It includes integrated MOSFETs to minimize the number of external components, reducing overall system cost and complexity.
7. Current Mode Control: This ensures stable operation over a wide range of input voltage and load conditions.
8. Protection Features: The device includes features like overcurrent protection, thermal shutdown, and undervoltage lockout to ensure robust operation.
These features make the LM3100MH ideal for powering a wide range of applications, including automotive, industrial, and consumer electronics.

Package

The LM3100MH is a buck switching regulator IC from Texas Instruments. It comes in a surface-mount package known as TO-PMOD-7 (also referred to as PFM-7). This package type is designed for efficient heat dissipation and compactness, suitable for high-performance power management applications.

Pinout

The LM3100MH is a 14-pin High Output Synchronous Buck Regulator designed by Texas Instruments. Its primary function is to convert a higher voltage input to a lower voltage output with high efficiency, typically used in applications requiring high current and low output voltage, such as in point-of-load power supplies for processors and other digital ICs.
Here is a brief description of its pin functions:
1. SGND: Signal Ground
2. EN: Enable Pin
3. VIN: Input Voltage
4. PGND: Power Ground
5. VCC: Internal VCC
6. RON: Frequency Adjust Pin
7. SW: Switch Node
8. BOOT: Bootstrap Pin
9. FB: Feedback Pin
10. COMP: Compensation Pin
11. SS: Soft-Start Control
12-14. Additional pins used for various control and performance functions.
These pins collectively enable the LM3100MH to regulate the output voltage, control the switching frequency, and provide other necessary control functionalities. For exact pin assignments and operations, consulting the specific datasheet is recommended.

Manufacturer

The LM3100MH is manufactured by Texas Instruments. Texas Instruments (TI) is a technology company based in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits. TI is one of the largest semiconductor companies in the world and provides products for a wide range of applications, including industrial, automotive, personal electronics, and communications equipment. The company is known for its innovations in analog and embedded processing, which help drive advancements in electronic systems.

Application

The LM3100MH is a synchronous buck regulator designed for step-down voltage conversion. It is used in applications requiring efficient power management, such as computing devices, telecommunications equipment, consumer electronics, and industrial systems. Its compact design and high efficiency make it suitable for space-constrained applications like embedded systems and portable devices. Additionally, its wide input voltage range and high output current capability are advantageous for powering microprocessors, FPGAs, ASICs, and other digital circuits.

Equivalent

The LM3100MH is a buck regulator produced by Texas Instruments. Equivalent products would include buck regulators with similar specifications, such as output voltage, current capability, switching frequency, and efficiency. Some alternatives could be the LM2596, LM2675, or TPS54331 from Texas Instruments. Other manufacturers like STMicroelectronics offer similar parts, such as the L4970 or L5970. Always check the datasheets for compatibility in terms of electrical characteristics and package type.

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