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Texas Instruments LM2766M6/NOPB
- Part No.:
- LM2766M6/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
LM2766M6/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 2VIN SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:989
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Product details
Overview
LM2766M6/NOPB from Texas Instruments is a CMOS switched-capacitor voltage doubler IC that converts 1.8 V–5.5 V input to up to 2×VIN output with 20 mA load capability, 200 kHz switching frequency, and 90% typical conversion efficiency at 20 mA. It operates in battery-powered portable electronics requiring compact, inductorless DC-DC voltage boosting.
For engineers reviewing the LM2766M6/NOPB datasheet, LM2766M6/NOPB pinout, LM2766M6/NOPB application, or LM2766M6/NOPB equivalent, key selection criteria include shutdown current (0.1 µA), output impedance (20 Ω typ), SOT-23-6 package compatibility, and charge-pump topology suitability for low-noise, space-constrained power rails.
Technical Context
The LM2766M6/NOPB implements a four-switch CMOS charge-pump architecture operating at 200 kHz nominal switching frequency (110–350 kHz range), enabling low-output-impedance voltage doubling without magnetic components. Its internal switch array transfers energy between two external capacitors to generate 2×VIN, with output regulation dependent on capacitor ESR and switch RDS(on).
Shutdown mode is controlled via the SD pin: pulling SD below 20% of VIN reduces quiescent current to 0.1 µA, while tying SD to VIN enables operation. The device lacks feedback regulation-output voltage drops linearly under load per its 20 Ω typical output resistance.
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 | 20 mA max at VIN ≥ 2.5 V - sufficient for biasing op-amps, interface ICs, or low-power analog circuitry. |
| Switching Frequency | 200 kHz typical (110–350 kHz) - balances capacitor size, ripple, and EMI; enables use of small 10 µF ceramic or tantalum caps. |
| Conversion Efficiency | 90% typical at 20 mA - minimizes power loss and thermal rise in thermally constrained handheld designs. |
| Shutdown Current | 0.1 µA typical - extends battery life during system sleep modes without requiring external power gating. |
| Output Impedance | 20 Ω typical - defines load-induced voltage drop (e.g., 400 mV drop at 20 mA); requires low-ESR external capacitors. |
| Ambient Temp Range | −40°C to +85°C - qualified for industrial and consumer portable equipment environments. |
Pinout & Package
SOT-23-6 (DBV) package: 2.90 mm × 1.60 mm body, 1.45 mm max height, JEDEC MO-178 compliant, tape-and-reel (1000 pcs/reel), RoHS-compliant Sn lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Power supply input | Primary positive rail connection; must be bypassed with low-ESR ceramic capacitor near pin. |
| 2 - GND | Ground reference | Common return for input, output, and flying capacitor paths; requires low-inductance layout tie to CIN/COUT ground pads. |
| 3 - CAP− | Flying capacitor negative terminal | Connects to negative side of external charge-transfer capacitor (C1); critical path for charge recycling. |
| 4 - SD | Shutdown control input | Active-high enable: tie to V+ for operation; pull ≤0.2×V+ to enter 0.1 µA shutdown state. |
| 5 - VOUT | Regulated-doubled output | Delivers ~2×VIN; output impedance dominates load regulation-requires local COUT decoupling. |
| 6 - CAP+ | Flying capacitor positive terminal | Connects to positive side of C1; forms charge-transfer loop with CAP−; sensitive to trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Voltage doubling topology | Eliminates inductors-reduces solution size, cost, and EMI vs. magnetic DC-DC converters. |
| Low quiescent current | 350 µA operating / 0.1 µA shutdown enables >1-year battery life in intermittent-use portable devices. |
| Integrated CMOS switch array | Four matched, low-RDS(on) switches replace discrete MOSFETs-improves reliability and simplifies layout. |
| Fixed 200 kHz switching | Optimized for 10 µF ceramic/tantalum capacitors-avoids audible noise and eases EMI filtering. |
| SOT-23-6 footprint | Standardized 6-pin package enables drop-in replacement and compatibility with automated assembly lines. |
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 data acquisition front-ends. IC Role / Device Role / Timing Role: Voltage-doubling charge pump providing clean, low-noise positive bias voltage for analog signal conditioning stages. Use Value: Enables dual-supply op-amp operation without inductors-reducing board area by >40% versus buck-boost solutions. |
Use Scenario: Powering RS-232 transceivers or USB PHYs requiring 3.3 V from a 1.8 V SoC I/O domain. IC Role / Device Role / Timing Role: Efficient step-up converter delivering regulated 3.3 V output for high-speed digital interface circuitry. Use Value: Supports level-shifting with <200 mV load regulation error at 15 mA-ensuring reliable signal integrity. |
| Handheld Instruments | Cellular Phones |
|
Use Scenario: Boosting 3.3 V battery voltage to 5 V for LCD bias or sensor excitation in portable multimeters. IC Role / Device Role / Timing Role: Compact, low-quiescent-current voltage doubler powering analog front-end peripherals during measurement cycles. Use Value: Delivers 20 mA at 90% efficiency-extending battery runtime by >25% versus linear regulators. |
Use Scenario: Supplying 5 V to camera modules or audio codecs in space-constrained smartphone mainboards. IC Role / Device Role / Timing Role: Space-optimized charge-pump IC generating auxiliary rail from shared system VBAT domain. Use Value: SOT-23-6 footprint fits within 3 mm² PCB area-enabling integration without compromising RF layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-doubling applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Higher 1.5 V min input (vs. 1.8 V), 120 kHz switching, 100 mA output capability, SO-8 package. | Supports heavier loads but requires larger board area and higher input voltage margin. | Choose when >20 mA output or lower input voltage (<1.8 V) is not required and SO-8 layout is acceptable. |
| TPS60205DGSR | 3.3 V fixed output (non-adjustable), 250 kHz switching, 60 mA output, 1.6 V–5.5 V input, MSOP-8 package. | Delivers regulated 3.3 V-not scalable to other voltages-and uses different pinout and external component count. | Prefer when fixed 3.3 V rail is needed and MSOP-8 footprint aligns with existing design constraints. |
Compared with MAX680ESA+ and TPS60205DGSR, the LM2766M6/NOPB offers the lowest profile (SOT-23-6), widest input range down to 1.8 V, and optimal balance of efficiency, size, and simplicity for 20 mA-class portable voltage doubling.
Availability
LM2766M6/NOPB is available at Aetrix Electronics and suitable for cellular phones, handheld instruments, and operational amplifier power supplies requiring stable component supply across production lifecycles.
Supply support for LM2766M6/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 company specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in industrial, automotive, and consumer electronics.
The LM2766 belongs to TI's switched-capacitor DC-DC converter product line, engineered specifically for ultra-compact, inductorless voltage boosting in battery-powered portable systems where board space and quiescent power are critical.
FAQ
What is the minimum input voltage supported by the LM2766M6/NOPB?
The LM2766M6/NOPB supports a minimum input voltage of 1.8 V, enabling operation from single-cell lithium polymer or NiMH batteries. This specification is guaranteed across the full −40°C to +85°C ambient temperature range and is validated per TI's Electrical Characteristics table in the SNVS071C datasheet.
Does the LM2766M6/NOPB require an external diode in the voltage doubler circuit?
Yes-the LM2766M6/NOPB requires an external Schottky diode (e.g., 1N5817 or MBR0520LT1) during startup to prevent parasitic latch-up and reduce start-up time. The diode is placed between VIN and VOUT and is not needed during steady-state operation, but omission risks device damage under fast input ramps.
Can multiple LM2766M6/NOPB ICs be paralleled to increase output current?
Yes-multiple LM2766M6/NOPB units can be paralleled to reduce effective output resistance and increase total output current capacity. Each device requires its own flying capacitor (C1), while a single shared output capacitor (COUT) suffices. The composite output resistance follows ROUT(total) = ROUT(individual) / N, where N is the number of paralleled devices.
What is the recommended capacitor type and value for the LM2766M6/NOPB flying capacitor (C1)?
Texas Instruments recommends 10 µF ceramic or low-ESR tantalum capacitors for C1, with maximum ESR ≤ 0.3 Ω. Ceramic chip capacitors from Murata, Taiyo Yuden, or Tokin are preferred for minimal output resistance and ripple; aluminum electrolytics (e.g., Nichicon PL/PF series) are acceptable if size constraints permit higher-profile solutions.
Is the LM2766M6/NOPB RoHS-compliant and lead-free?
Yes-the LM2766M6/NOPB is RoHS-compliant and features a lead-free Sn (tin) lead finish. It meets JEDEC MSL Level-1 moisture sensitivity requirements and is rated for peak reflow temperatures up to 260°C, making it compatible with standard lead-free PCB assembly processes.
LM2766M6/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
LM2766M6/NOPB FAQ
1.How can I place an order for LM2766M6/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2766M6/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 LM2766M6/NOPB reliable?
The price and inventory of LM2766M6/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2766M6/NOPB is usually 5 days.
3.What payment methods are accepted for LM2766M6/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2766M6/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2766M6/NOPB?
LM2766M6/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2766M6/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 LM2766M6/NOPB?
For technical support, including LM2766M6/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2766M6/NOPB requirements.
6.How does Aetrix verify that LM2766M6/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2766M6/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 LM2766M6/NOPB meets industry standards.
7.What is the process for return or replacement of LM2766M6/NOPB?
All LM2766M6/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2766M6/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 LM2766M6/NOPB part is unused and in its original packaging.
Return procedure for LM2766M6/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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