Overview
The LM2611AMF/NOPB is a 1.4-MHz Cuk converter integrated circuit designed by Texas Instruments. This device is part of the DC-DC switching regulators family and is particularly useful for applications requiring efficient voltage conversion. The LM2611AMF/NOPB operates from a supply voltage range of 2.7V to 14V and can produce a regulated output voltage ranging from -1.23V to -36V. It is packaged in a compact 5-pin SOT-23 package, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | 5-Pin SOT-23 (SC-74A, SOT-753) |
| Input Voltage Range | 2.7V to 14V |
| Output Voltage Range | -1.23V to -36V |
| Output Current | Up to 1.2A (Grade A), Up to 0.9A (Grade B) |
| Switching Frequency | 1.4 MHz |
| RDS(ON) | 0.5 Ω (Grade A), 0.7 Ω (Grade B) |
| Output Ripple | 1 mVp-p |
| Shutdown Current | <1 µA |
Key Features
- High-efficiency 1.4-MHz Cuk converter topology
- Low RDS(ON) DMOS FET for reduced power loss
- Adjustable output voltage using a simple resistor divider
- Cycle-by-cycle current limiting and internal compensation
- Low shutdown current (<1 µA) to conserve battery life
- Compact 5-pin SOT-23 package for space-saving designs
Applications
- MR Head Bias
- Digital Camera CCD Bias
- LCD Bias
- GaAs FET Bias
- Positive to Negative Voltage Conversion
Q & A
- What is the input voltage range of the LM2611AMF/NOPB?
The input voltage range is from 2.7V to 14V.
- What is the output voltage range of the LM2611AMF/NOPB?
The output voltage range is from -1.23V to -36V.
- What is the switching frequency of the LM2611AMF/NOPB?
The switching frequency is 1.4 MHz.
- How do I set the output voltage of the LM2611AMF/NOPB?
The output voltage can be set using a simple resistor divider connected to the negative feedback (NFB) pin.
- What is the shutdown current of the LM2611AMF/NOPB?
The shutdown current is less than 1 µA.
- What package type is the LM2611AMF/NOPB available in?
The LM2611AMF/NOPB is available in a 5-pin SOT-23 package.
- What are the typical applications of the LM2611AMF/NOPB?
Typical applications include MR Head Bias, Digital Camera CCD Bias, LCD Bias, GaAs FET Bias, and Positive to Negative Voltage Conversion.
- How do I activate the shutdown mode of the LM2611AMF/NOPB?
The shutdown mode can be activated by grounding the SHDN pin.
- What is the RDS(ON) of the LM2611AMF/NOPB?
The RDS(ON) is 0.5 Ω for Grade A and 0.7 Ω for Grade B.
- What is the output current limit of the LM2611AMF/NOPB?
The output current limit is up to 1.2A for Grade A and up to 0.9A for Grade B.
