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The LM2767M5X/NOPB is a miniature, high-efficiency switched-capacitor charge pump voltage converter from Texas Instruments. Featuring a ratiometric output architecture with an input voltage range of 1.8V to 5.5V, it generates a stable output voltage that is a fixed multiple of the input voltage via an internal charge pump. Requiring only a few external capacitors and no inductor, and operating at a low frequency of 11kHz, it provides simple voltage boosting or level shifting while generating minimal electromagnetic interference. It is specifically designed for space-constrained, noise-sensitive portable and battery-powered devices requiring simple power conversion.
Category:Integrated Circuits (ICs);Power Management (PMIC);Voltage Regulators - DC DC Switching Regulators
Mfr:Texas Instruments
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Function:Ratiometric
Output Configuration:Positive
Topology:Charge Pump
Number of Outputs:1
Voltage - Input (Min):1.8V
Voltage - Input (Max):5.5V
Frequency - Switching:11kHz
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:SC-74A, SOT-753
Supplier Device Package:SOT-23-5
Base Product Number:LM2767
Inductorless Charge Pump Design:Utilizing switched-capacitor (charge pump) technology, it operates with only two external flying capacitors, simplifying circuit design, saving PCB space and cost, and eliminating magnetic interference associated with inductors.
Ratiometric Output Mode:The output voltage is a fixed multiple (e.g., 1.5x or 2x, depending on variant) of the input voltage. This linear relationship simplifies design for powering certain sensors or for level translation.
Ultra-Low Switching Frequency & Low Noise:Its low 11kHz operating frequency places switching noise spectra far below that of most high-frequency switchers, drastically reducing EMI. This makes it ideal for noise-sensitive areas like analog circuits, sensors, and RF modules.
Wide Input Voltage Range:Supports a wide input range from 1.8V to 5.5V, compatible with single-cell Li-ion, multi-cell alkaline/NiMH batteries, and standard 3.3V/5V power rails.
Miniature Package & Simple Layout:Housed in a tiny SOT-23-5 package with minimal external components, the overall solution size is extremely compact and easy to integrate into space-constrained products.
Low Quiescent Current:Maintains low self-power consumption while performing voltage conversion, helping to extend battery life in portable devices.
Portable Electronics Power Generation:Provides the required boosted voltage for specific chips (e.g., displays, audio amplifiers) in devices powered by a single Li-ion cell or a 3V system, such as Bluetooth headsets or smartwatches.
Sensor & Analog Front-End Power Supply:Provides clean, low-noise bias voltage for sensors (e.g., certain MEMS, chemical sensors) or their analog conditioning circuits that require a voltage higher than the system's main supply.
Display Panel Bias Voltage:Generates the required negative or positive bias voltage for the driver circuits of OLED modules or LCD displays.
Interface Level Shifting:Used for simple voltage translation between 1.8V, 3.3V, and 5V logic levels, providing appropriate voltage for GPIO or communication interfaces.
Low-Noise Module Auxiliary Power:Serves as a local power supply for RF modules, precision ADCs/DACs, or low-noise amplifiers, isolating sensitive circuits from the noise of the main switching power supply.
The LM2767M5X/NOPB stands out as a charge pump voltage converter due to its minimalist design and ultra-low noise characteristics. It skillfully avoids the complexity and EMI challenges of traditional inductive DC-DC converters, offering designers an almost “invisible” power solution. For applications requiring compact size, low noise, and simple, reliable voltage boosting or level shifting—especially in portable devices, sensor interfaces, and precision analog systems—it presents a highly attractive and ideal choice.
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