LM2647MTC - Texas Instruments

Manufacturer Part Number

LM2647MTC

Manufacturer

Texas Instruments

Introduction

The LM2647MTC is a dual output, controller integrated circuit designed for Power Management (PMIC) applications, specifically in DC DC Switching Controllers. It is tailored for stepping down voltage with high efficiency.

Product Features and Performance

Dual output configuration allowing for multiple voltage rails from a single IC.

Supports step-down (buck) topology for efficient voltage conversion.

Positive output configuration.

Capable of operating with a supply voltage range of 5.5V 28V.

Switching frequency is adjustable between 200kHz and 500kHz, offering flexibility in balancing efficiency and component size.

Maximum duty cycle of 75% enables a wide range of output voltages.

Incorporates synchronous rectification for improved efficiency.

Features include Current Limit, Enable, Frequency Control, Power Good, and Soft Start for enhanced control and protection.

Operational over a wide temperature range of -5°C to 125°C.

Product Advantages

Dual output capability reduces the need for additional components.

Adjustable switching frequency allows for optimization between efficiency and external component size.

Synchronous rectifier feature significantly increases power efficiency.

Comprehensive control features ensure stable and protected operation.

Key Technical Parameters

Voltage Supply (Vcc/Vdd): 5.5V ~ 28V

Frequency Switching: 200kHz ~ 500kHz

Duty Cycle (Max): 75%

Output Phases: 2

Operating Temperature: -5°C ~ 125°C (TJ)

Quality and Safety Features

Current Limiting for over-current protection.

Soft Start function reduces inrush current at startup.

Compatibility

Surface mount package (28-TSSOP) compatible with modern PCB technology.

Application Areas

Power supply modules.

Portable devices requiring efficient power management.

Industrial equipment.

Networking and telecom equipment.

Product Lifecycle

The LM2647MTC is classified as obsolete, signaling the end of its production lifecycle. Users should look for replacements or upgrades for new designs.

Several Key Reasons to Choose This Product

High flexibility in design given its dual output and adjustable parameters.

Efficiency enhancements through synchronous rectification and adjustable switching frequencies.

Comprehensive protection and control features ensure reliable operation under various conditions.

Obsolescence may favor legacy systems in need of specific replacement parts, but alternatives should be considered for new designs.