LM3485MM/NOPB

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LM3485MM/NOPB

IC REG CTRLR BUCK 8VSSOP

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
OutputType Transistor Driver
Function Step-Down
OutputConfiguration Positive
Topology Buck
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 4.5V ~ 35V
DutyCycle(Max) 100%
SynchronousRectifier No
ClockSync No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

概述

Description

The LM3485MM/NOPB is a high-efficiency, step-down DC-DC switching regulator designed by Texas Instruments. It is part of the LM3485 series and is used primarily for converting a higher DC input voltage to a lower DC output voltage with improved efficiency. Key features include a wide input voltage range, typically from 4.5V to 35V, making it suitable for various applications like consumer electronics, industrial, and automotive systems.
The device operates on a constant frequency current mode control, which simplifies external loop compensation and provides fast transient response. It also features an adjustable output voltage, set via external resistors, and a switching frequency of up to 1 MHz, allowing for smaller external components and compact design.
The LM3485MM/NOPB includes built-in protection features such as thermal shutdown, cycle-by-cycle current limit, and under-voltage lockout, ensuring reliable operation under various conditions. It is encapsulated in an 8-pin VSSOP package, which provides a compact form factor suitable for space-constrained applications.

Features

The LM3485MM/NOPB is a step-down DC-DC controller designed for high-efficiency power conversion applications. Key features include:
1. Wide Input Voltage Range: Operates from 3.0V to 30V, making it versatile for various power supply applications.
2. Adjustable Output Voltage: Allows for flexible output voltage settings, optimized for different loads.
3. High Efficiency: Designed to maximize power efficiency, reducing heat generation and improving performance.
4. PWM Control: Utilizes pulse-width modulation for precise control of output voltage and current.
5. Low Quiescent Current: Minimizes power consumption when the device is in standby mode.
6. Current Limit Protection: Protects against over-current conditions to prevent damage to the device and connected components.
7. Thermal Shutdown: Automatically disables the device in case of overheating, ensuring safety and reliability.
8. Compact Packaging: Available in a small MSOP-8 package, suitable for space-constrained applications.
These features make the LM3485MM/NOPB ideal for use in battery-powered devices, consumer electronics, and other applications requiring efficient voltage regulation.

Package

The LM3485MM/NOPB is a DC-DC converter controller packaged in an 8-pin Mini Small Outline Package (MSOP-8).

Pinout

The LM3485MM/NOPB is an 8-pin IC. It is a high-efficiency, step-down DC-DC controller designed for applications requiring a simple, efficient, and low component count solution. Its primary function is to convert a higher input voltage to a lower output voltage efficiently, using an external inductor, diode, and capacitor.
The key features include adjustable output voltage, current mode control, and a wide input voltage range. The chip supports a maximum switching frequency of up to 1 MHz, allowing for smaller external components and faster transient response. It is commonly used in applications like point-of-load converters, distributed power systems, and battery-powered devices.
The pin configuration is as follows:
1. SW - Switch pin, connected to the external inductor/diode.
2. GND - Ground pin, reference for the IC.
3. FB - Feedback pin, used for setting the output voltage.
4. Comp - Compensation pin, for loop stabilization.
5. Vin - Input voltage pin.
6. Vcc - Internal supply voltage pin.
7. EN - Enable pin, to turn the IC on or off.
8. ISEN - Current sense pin, for current mode control.
This concise overview provides the essential information about the LM3485MM/NOPB's pin count and primary function.

Manufacturer

The LM3485MM/NOPB is manufactured by Texas Instruments. Texas Instruments (TI) is an American technology company headquartered in Dallas, Texas. It is one of the largest semiconductor companies in the world and focuses on designing and manufacturing semiconductors and integrated circuits. These components are used in a wide range of electronic devices and systems, including industrial equipment, consumer electronics, and automotive applications. TI is known for its innovation and has a significant impact on the electronics industry.

Application

The LM3485MM/NOPB is a non-synchronous step-down DC-DC controller used in various applications. It is commonly applied in power management systems for telecommunications, networking equipment, and consumer electronics. Additionally, it is suitable for industrial power supplies, distributed power systems, and battery-powered devices due to its efficiency and compact design. Its ability to regulate voltage in low-power applications makes it a versatile choice in systems requiring efficient power conversion.

Equivalent

The LM3485MM/NOPB is a step-down DC-DC controller. Equivalent products include the TPS40210 from Texas Instruments, the LTC1772 from Analog Devices (formerly Linear Technology), and the MC34063 from ON Semiconductor. These alternatives offer similar functionality, such as adjustable output and current-mode control, but may differ in terms of specific features like input voltage range and switching frequency. Always check the datasheets for compatibility with your specific application requirements.

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