LM2662MX/NOPB: A High-Efficiency DC/DC Charge Pump Voltage Converter

Product Overview:

LM2662MX/NOPB is a high-efficiency DC/DC charge pump voltage converter manufactured by Texas Instruments (TI). It is designed to convert a positive input voltage within the range of 1.5V to 5.5V into a corresponding negative output voltage. This device is ideal for applications requiring a negative power supply, such as sensors, medical equipment, and communication devices.

Key Features:

Voltage Conversion:

• LM2662MX/NOPB can invert the input voltage to produce a negative output voltage, making it suitable for applications where a negative power supply is necessary.

High Efficiency:

• The converter operates with high efficiency, typically greater than 90% under most loads. This high efficiency helps to extend battery life in portable devices.

Output Current Capability:

• It can provide an output current of up to 200mA, sufficient for many low-power applications.

Frequency Selection:

• The device offers a selectable oscillator frequency of either 20kHz or 150kHz, allowing users to optimize performance based on their specific application needs.

Low-Cost Components:

• LM2662MX/NOPB uses two low-cost capacitors to provide the required output current, eliminating the need for inductor-based converters and their associated costs, size, and electromagnetic interference (EMI) issues.

Compact Package:

• The device is available in a small SOIC-8 package, making it easy to integrate into compact electronic designs.

Wide Operating Temperature Range:

• LM2662MX/NOPB can operate over a wide temperature range of -40°C to +85°C, ensuring reliable performance in various environmental conditions.

Shutdown Mode:

• The converter features a low-current shutdown mode, which can be used to disable the device and reduce static current consumption to as low as 10μA when not in use.

Protection Features:

• The device includes overvoltage protection and short-circuit protection features to protect the load and the converter itself from damage.

Applications:

LM2662MX/NOPB is suitable for a wide range of applications, including:

• Power management in portable devices.
• Communication and networking equipment.
• Computers and computer peripherals.
• Consumer electronics.

Conclusion:

LM2662MX/NOPB is a high-efficiency DC/DC charge pump voltage converter that offers many advantages for applications requiring a negative power supply. Its high efficiency, compact package, and wide operating temperature range make it an ideal choice for many electronic designs. Additionally, its protection features and shutdown mode provide added safety and power-saving benefits.