Overview
The Texas Instruments LM2664M6X/NOPB is a switched capacitor voltage converter designed to invert a positive input voltage to a corresponding negative output voltage. This device is part of the LM2664 series and is packaged in a 6-pin SOT-23 package. It operates within an input voltage range of 1.8 V to 5.5 V and can produce an output voltage range of -1.8 V to -5.5 V. The LM2664M6X/NOPB is ideal for battery-powered systems due to its high efficiency and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Brand | Texas Instruments | |
| Mounting Type | Surface Mount | |
| Package Type | SOT-23 | |
| Pin Count | 6 | |
| Maximum Switching Frequency | 160 kHz | |
| Input Voltage Range | 1.8 V to 5.5 V | |
| Output Voltage Range | -1.8 V to -5.5 V | |
| Output Current | Up to 40 mA | |
| Typical Output Impedance | 12 Ω | |
| Typical Conversion Efficiency | 91% at 40 mA | |
| Operating Current | 220 µA | |
| Shutdown Current | 1 µA | |
| Operating Temperature Range | -40°C to 85°C |
Key Features
- Inverts a positive input voltage to a corresponding negative output voltage within the range of 1.8 V to 5.5 V.
- Operates at a 160 kHz oscillator frequency to reduce output resistance and voltage ripple.
- High conversion efficiency, typically greater than 91% with most loads.
- Low operating current of 220 µA and shutdown current of 1 µA, making it suitable for battery-powered systems.
- Uses two low-cost external capacitors for energy transfer and storage.
- Typical output impedance of 12 Ω.
- Available in a compact 6-pin SOT-23 package.
Applications
- Cellular phones and pagers.
- Personal Digital Assistants (PDAs).
- Handheld instruments.
- Operational amplifier power suppliers.
- Interface power suppliers.
- Battery-powered systems requiring negative voltage supplies.
Q & A
- What is the primary function of the LM2664M6X/NOPB?
The primary function of the LM2664M6X/NOPB is to invert a positive input voltage to a corresponding negative output voltage.
- What is the input voltage range for the LM2664M6X/NOPB?
The input voltage range is from 1.8 V to 5.5 V.
- What is the maximum output current of the LM2664M6X/NOPB?
The maximum output current is up to 40 mA.
- At what frequency does the LM2664M6X/NOPB operate?
The device operates at a 160 kHz oscillator frequency.
- What is the typical conversion efficiency of the LM2664M6X/NOPB?
The typical conversion efficiency is greater than 91% at 40 mA.
- What is the operating current and shutdown current of the LM2664M6X/NOPB?
The operating current is 220 µA, and the shutdown current is 1 µA.
- What type of package is the LM2664M6X/NOPB available in?
The device is available in a 6-pin SOT-23 package.
- What are some common applications for the LM2664M6X/NOPB?
Common applications include cellular phones, pagers, PDAs, handheld instruments, and battery-powered systems requiring negative voltage supplies.
- How many external capacitors are required for the LM2664M6X/NOPB to operate?
The device requires two low-cost external capacitors for energy transfer and storage.
- What is the typical output impedance of the LM2664M6X/NOPB?
The typical output impedance is 12 Ω.
