Texas Instruments

LM3485MM/NOPB  

DC DC Switching Controllers

The LM3485MM/NOPB is a monolithic step-up/step-down switching regulator integrated circuit (IC) manufactured by Texas Instruments. It is designed to provide efficient and reliable power conversion in a wide range of applications.

Description:

The LM3485MM/NOPB is a versatile switching regulator that can operate in both step-up (boost) and step-down (buck) modes. It features a fixed frequency of 550kHz and is available in a compact 8-pin SOIC (Small Outline Integrated Circuit) package. The device is designed to accept input voltages ranging from 2.5V to 40V and can deliver output voltages ranging from 1.2V to the input voltage, depending on the mode of operation.

Features:

1. Dual-mode operation: The LM3485MM/NOPB can operate in both step-up (boost) and step-down (buck) modes, making it suitable for a wide range of applications.
2. Wide input voltage range: The device can accept input voltages from 2.5V to 40V, making it suitable for various power supply requirements.
3. Fixed switching frequency: The LM3485MM/NOPB operates at a fixed frequency of 550kHz, which simplifies the design of the external components and reduces EMI (Electromagnetic Interference).
4. High efficiency: The device offers high efficiency, with typical values ranging from 85% to 95% depending on the input and output voltages.
5. Low quiescent current: The LM3485MM/NOPB has a low quiescent current of typically 60µA, which helps to minimize power consumption during standby or low-load conditions.
6. External components: The device requires a minimum number of external components, simplifying the design and reducing the overall size of the power supply.
7. Protection features: The LM3485MM/NOPB includes various protection features such as over-current protection, over-temperature protection, and under-voltage lockout.

Applications:

1. Portable electronic devices: The LM3485MM/NOPB can be used in battery-powered devices such as smartphones, tablets, and wearable devices, providing efficient power conversion and regulation.
2. Power adapters: The device can be used in power adapters and chargers for various electronic devices, offering compact and efficient power conversion solutions.
3. LED lighting: The LM3485MM/NOPB can be used in LED lighting applications to provide efficient power conversion and regulation, extending the life of the LEDs and reducing energy consumption.
4. Industrial equipment: The device can be used in various industrial applications, such as motor drives and control systems, where efficient and reliable power conversion is required.
5. Medical equipment: The LM3485MM/NOPB can be used in medical devices, such as portable medical instruments and wearable medical devices, providing efficient power conversion and regulation.

In summary, the LM3485MM/NOPB is a versatile and efficient switching regulator IC from Texas Instruments, suitable for a wide range of applications, including portable electronic devices, power adapters, LED lighting, industrial equipment, and medical equipment. Its dual-mode operation, wide input voltage range, and various protection features make it an ideal choice for designing compact and reliable power conversion solutions.

LM3485MM/NOPB Documents

Download datasheets and manufacturer documentation for LM3485MM/NOPB

PCN Assembly/Origin :

Assembly Site 25/Sep/2020      

Datasheets :

LM3485      

Reference Design Library :

LM3485EVAL: 3.3V @ 1A, 7 ~ 28 Vin      

PCN Other :

Multiple Changes 12/Feb/2015      

Design Resources :

LM3485 Design with WEBENCH® Power Designer      

PCN Obsolescence/ EOL :

Cancel 15/Aug/2019      

PCN Design/Specification :

VSSOP Pkg Copper Wire 07/Jun/2013