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Texas Instruments LM2766M6X/NOPB
- Part No.:
- LM2766M6X/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
LM2766M6X/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 2VIN SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,126
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Product details
Overview
LM2766M6X/NOPB from Texas Instruments is a CMOS switched-capacitor voltage doubler IC that converts 1.8 V–5.5 V input to ~2×VIN output with up to 20 mA load current, 20 Ω typical output impedance, 90%+ conversion efficiency at 20 mA, and 0.1 µA shutdown current - used in portable battery-powered systems requiring compact, inductorless DC-DC voltage boosting.
For engineers reviewing the LM2766M6X/NOPB datasheet, LM2766M6X/NOPB pinout, LM2766M6X/NOPB application, or LM2766M6X/NOPB equivalent, key selection criteria include input voltage range (1.8–5.5 V), SOT-23-6 package compatibility, shutdown control via SD pin, output impedance sensitivity to external capacitor ESR, and absence of magnetic components.
Technical Context
The LM2766M6X/NOPB implements a four-switch charge-pump topology operating at 200 kHz nominal switching frequency (400 kHz oscillator), using two external capacitors to double the input supply without inductors. Its internal CMOS switches are sequenced to alternately charge and transfer energy between flying and output capacitors.
It features a dedicated shutdown pin (SD) that reduces quiescent current to 0.1 µA when pulled below 20% of V+, and delivers regulated-doubled output only under load - no feedback regulation - making output voltage dependent on input, load, capacitor ESR, and switch RDS(on).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, NiMH, and 3.3 V/5 V logic rails without external regulators. |
| Output Current | Up to 20 mA at VIN ≥ 2.5 V - sufficient for biasing op-amps, interface ICs, or low-power analog circuitry. |
| Switching Frequency | 200 kHz (typical) - enables use of small ceramic capacitors while limiting EMI and ripple. |
| Output Impedance | 20 Ω (typical at 15 mA) - determines load-induced voltage drop: ΔV = ILOAD × 20 Ω. |
| Shutdown Current | 0.1 µA (typical) - extends battery life in standby mode without external power gating. |
| Conversion Efficiency | 90% (typical at 20 mA) - minimizes power loss versus linear regulators or discrete charge pumps. |
| Package | SOT-23-6 (DBV) - 2.9 mm × 1.6 mm footprint, surface-mount compatible with standard reflow profiles. |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 1.45 mm max height, lead pitch 0.95 mm, RoHS-compliant matte tin (SN) finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Power input | Primary positive supply rail connection; must be bypassed with low-ESR capacitor near pin. |
| 2 - GND | Ground reference | Common return for input, output, and internal switches; requires low-inductance layout to minimize noise. |
| 3 - CAP− | Flying capacitor negative terminal | Connects to negative side of external flying capacitor (C1); critical path for charge transfer timing. |
| 4 - SD | Shutdown control input | Active-low enable: tie to V+ for operation; pull ≤0.2×V+ to enter 0.1 µA shutdown mode. |
| 5 - VOUT | Regulated-doubled output | Delivers ~2×VIN under load; output impedance dominates voltage droop at higher currents. |
| 6 - CAP+ | Flying capacitor positive terminal | Connects to positive side of external flying capacitor (C1); forms charge-transfer node with CAP−. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage doubling architecture | Inductorless 2×VIN generation eliminates magnetic components, reducing BOM cost and board area. |
| Low quiescent current | 350 µA operating current enables >1000-hour runtime on coin cells in intermittent-use applications. |
| Integrated switch array | Four matched CMOS switches eliminate external MOSFETs and timing control logic. |
| Shutdown control | Dedicated SD pin allows system-level power sequencing without external FETs or logic gates. |
| Capacitor-driven design | Relies on low-ESR ceramic/tantalum capacitors (C1, C2) - simplifies layout vs. inductor-based converters. |
Applications
| Operational Amplifier Power Supplies | Interface Power Supplies |
|---|---|
|
Use Scenario: Generating ±5 V rails from a single 5 V supply for rail-to-rail op-amps in portable test equipment. IC Role / Device Role / Timing Role: Voltage doubler providing positive boosted rail; no timing-critical interface - operates asynchronously. Use Value: Eliminates need for dual-output DC-DC or transformer-based solutions, cutting solution size by >40%. |
Use Scenario: Supplying 3.3 V logic interface voltage from a 1.8 V microcontroller I/O rail in IoT sensor nodes. IC Role / Device Role / Timing Role: Level-shifting power source for SPI/I²C buffers; independent of data timing or clock domains. Use Value: Enables direct interfacing between low-voltage MCUs and legacy 3.3 V peripherals without level translators. |
| Handheld Instrumentation | Cellular Phone Peripherals |
|
Use Scenario: Biasing LCD contrast voltage or analog front-end circuitry in handheld multimeters with single-cell batteries. IC Role / Device Role / Timing Role: Compact, low-noise auxiliary supply generator; no synchronization required with measurement cycles. Use Value: Maintains stable display contrast and ADC reference over full battery discharge (1.8–5.5 V input range). |
Use Scenario: Powering camera module analog circuitry or RF front-end bias in feature phones with tight space constraints. IC Role / Device Role / Timing Role: Standby-ready voltage booster activated only during camera capture bursts. Use Value: 0.1 µA shutdown current preserves standby battery life while enabling rapid wake-up for imaging functions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage doubler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Fixed 200 kHz switching; ±5 V dual-output capable; higher 1.2 mA quiescent current. | Supports dual-rail generation; less suitable for ultra-low-power shutdown scenarios. | Choose for dual-output needs where 0.1 µA shutdown is not required. |
| TPS60205DGSR | 2.5 V–6 V input; integrated Schottky diode; 92% efficiency at 60 mA; SOT-23-6 pinout. | Higher output current capability but larger solution size due to integrated diode footprint. | Choose when >20 mA load or simplified start-up (no external diode) is prioritized. |
Compared with MAX680ESA+ and TPS60205DGSR, the LM2766M6X/NOPB offers the lowest shutdown current (0.1 µA) and smallest external component count (only two capacitors + optional Schottky), making it optimal for space- and battery-constrained voltage doubling where dual outputs or >20 mA loads are unnecessary.
Availability
LM2766M6X/NOPB is available at Aetrix Electronics and suitable for cellular phones, handheld instruments, and operational amplifier power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LM2766M6X/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in precision power conversion and low-power design.
The LM2766 belongs to TI's switched-capacitor DC-DC converter product line, engineered specifically for compact, inductor-free voltage boosting in battery-powered portable electronics where size, efficiency, and shutdown leakage are critical.
FAQ
What is the maximum continuous output current specification for the LM2766M6X/NOPB?
The LM2766M6X/NOPB supports up to 20 mA continuous output current when the input voltage is between 2.5 V and 5.5 V. At lower input voltages (1.8 V–2.5 V), the rated output current drops to 10 mA. Absolute maximum output current is 40 mA, but sustained operation above 20 mA may exceed thermal limits or degrade output regulation depending on PCB layout and ambient conditions. The LM2766M6X/NOPB datasheet specifies these limits under recommended operating conditions.
Does the LM2766M6X/NOPB require an external Schottky diode in all applications?
The LM2766M6X/NOPB does not require an external Schottky diode for basic voltage doubling operation, but TI recommends one (e.g., 1N5817) during start-up to prevent latch-up via internal parasitic diodes and reduce start-up time. If the input voltage ramp rate is below 10 V/ms, a smaller diode like MBR0520LT1 may be used. The LM2766M6X/NOPB functions without the diode but risks reliability issues under fast-ramp or fault conditions.
Can multiple LM2766M6X/NOPB devices be paralleled to increase output current capacity?
Yes, multiple LM2766M6X/NOPB devices can be safely paralleled to reduce effective output resistance and increase total output current capability. Each device requires its own flying capacitor (C1), while a shared output capacitor (C2) suffices. The composite output resistance is ROUT_total = ROUT_single / N, where N is the number of paralleled devices. No synchronization or feedback is needed, as the LM2766M6X/NOPB operates open-loop.
What is the recommended capacitor type and value for stable operation of the LM2766M6X/NOPB?
Texas Instruments recommends 10 µF ceramic or low-ESR tantalum capacitors for both flying (C1) and output (C2) positions in the LM2766M6X/NOPB circuit. Ceramic capacitors (e.g., X5R/X7R) are preferred for low ESR (< 0.3 Ω) and minimal voltage coefficient. High-ESR capacitors increase output resistance and ripple; the LM2766M6X/NOPB datasheet explicitly warns against using high-ESR electrolytics unless derated per application notes.
Is the LM2766M6X/NOPB pin-compatible with other members of the LM2766 family?
Yes, the LM2766M6X/NOPB shares identical SOT-23-6 (DBV) pinout and electrical functionality with all LM2766 variants including LM2766M6/NOPB and LM2766M6X/NOPB.A. Differences are limited to reel quantity (3000 vs 1000), part marking suffixes, and packaging logistics - not electrical or mechanical specifications. The LM2766M6X/NOPB may be substituted on existing designs without layout changes.
LM2766M6X/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LM2766M6X/NOPB FAQ
1.How can I place an order for LM2766M6X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2766M6X/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM2766M6X/NOPB reliable?
The price and inventory of LM2766M6X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2766M6X/NOPB is usually 5 days.
3.What payment methods are accepted for LM2766M6X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2766M6X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2766M6X/NOPB?
LM2766M6X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2766M6X/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM2766M6X/NOPB?
For technical support, including LM2766M6X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2766M6X/NOPB requirements.
6.How does Aetrix verify that LM2766M6X/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2766M6X/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM2766M6X/NOPB meets industry standards.
7.What is the process for return or replacement of LM2766M6X/NOPB?
All LM2766M6X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2766M6X/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM2766M6X/NOPB part is unused and in its original packaging.
Return procedure for LM2766M6X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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