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Texas Instruments LM2664M6X/NOPB
- Part No.:
- LM2664M6X/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
LM2664M6X/NOPB.pdf
- Description:
- IC REG CHRG PUMP INV 40MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:17,241
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Product details
Overview
LM2664M6X/NOPB from Texas Instruments is a CMOS switched-capacitor voltage inverter IC that converts 1.8 V to 5.5 V positive input into −1.8 V to −5.5 V negative output, delivers up to 40 mA load current, operates at 160-kHz oscillator frequency, and features 12-Ω typical output impedance - used in portable instrumentation and op-amp dual-supply generation.
For engineers reviewing the LM2664M6X/NOPB datasheet, LM2664M6X/NOPB pinout, LM2664M6X/NOPB application, or LM2664M6X/NOPB equivalent, key selection criteria include input voltage range (1.8–5.5 V), shutdown current (1 µA), conversion efficiency (91% at 40 mA), SOT-23-6 package compatibility, and charge-pump capacitor requirements (two 3.3 µF).
Technical Context
The LM2664M6X/NOPB implements a two-phase, four-switch CMOS charge-pump topology with internal MOSFETs having 4 Ω typical RDS(on) sum. It uses external flying (CAP+, CAP−) and output (OUT, GND) capacitors to invert voltage without inductors.
Its 160-kHz oscillator drives switching at 80 kHz, minimizing output resistance and ripple; shutdown mode disables internal oscillator and reduces supply current to 1 µA while preserving pin-level control via SD pin referenced to V+.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, alkaline, or regulated 3.3 V/5 V rails |
| Output Current | Up to 40 mA - sufficient for biasing op-amps, RS-232 drivers, or sensor interfaces |
| Oscillator Frequency | 160 kHz - enables compact 3.3 µF ceramic or tantalum capacitors and low ESR ripple |
| Conversion Efficiency | 91% typical at 40 mA - minimizes power loss in battery-critical applications |
| Shutdown Current | 1 µA typical - extends battery life during system sleep modes |
| Output Impedance | 12 Ω typical at 40 mA - defines voltage droop under load; includes switch RDS(on) and capacitor ESR |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable consumer environments |
Pinout & Package
LM2664M6X/NOPB is housed in a 6-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm × 1.45 mm max height, with gull-wing leads and RoHS-compliant matte tin (Sn) lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Power ground reference | Common return path for V+, OUT, CAP−, and SD; must be low-inductance connection to minimize noise |
| 2 - OUT | Negative voltage output | Delivers inverted voltage (−V+) to load; connects to output capacitor cathode and system ground-referenced negative rail |
| 3 - CAP− | Flying capacitor negative terminal | Connects to negative side of external flying capacitor (C1); switches between GND and OUT during charge-transfer phases |
| 4 - SD | Shutdown control input | Logic-level enable: >2 V (≥40% V+) for active mode; <0.8 V (≤20% V+) for 1 µA shutdown state |
| 5 - V+ | Positive supply input | Accepts 1.8–5.5 V input; powers internal oscillator and switches; requires local 1-µF bypass capacitor |
| 6 - CAP+ | Flying capacitor positive terminal | Connects to positive side of external flying capacitor (C1); switches between V+ and GND during charge-transfer phases |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless voltage inversion | Eliminates magnetic components and EMI concerns; enables ultra-thin PCB designs using only two external capacitors |
| Low quiescent current | 220 µA operating current enables >1000-hour runtime on coin-cell batteries in standby instrumentation |
| Integrated MOSFET switch array | Four matched CMOS switches with 4 Ω total RDS(on) reduce conduction loss and simplify layout versus discrete charge-pump solutions |
| Controlled shutdown interface | SD pin accepts direct connection to microcontroller GPIO without level-shifting, enabling precise power sequencing |
| Stable operation across voltage range | Maintains ≥90% efficiency from 1.8 V to 5.5 V input, supporting wide-battery-voltage applications like handheld medical devices |
Applications
| Portable Instrumentation Power | Op-Amp Dual-Supply Generation |
|---|---|
|
Use Scenario: Handheld multimeters and portable oscilloscopes require isolated ±3.3 V or ±5 V rails from a single 3.3 V or 5 V battery source. IC Role / Device Role / Timing Role: LM2664M6X/NOPB acts as a compact, low-noise negative rail generator synchronized to its internal 160-kHz oscillator. Use Value: Enables true bipolar analog front-end operation without inductors, reducing board area by >40% versus transformer-based solutions. |
Use Scenario: Rail-to-rail op-amps in sensor signal conditioning circuits need symmetric ±2.5 V supplies from a 5 V system rail. IC Role / Device Role / Timing Role: LM2664M6X/NOPB provides regulated negative voltage referenced to system ground, with output impedance limiting voltage droop under dynamic load. Use Value: Delivers stable −2.5 V at 20 mA with <15 mV droop, supporting 12-bit ADC accuracy without additional LDO post-regulation. |
| RS-232 Interface Supply | Low-Power Display Bias |
|
Use Scenario: Microcontroller-based IoT nodes implement RS-232 communication using minimal external components and no dedicated ±12 V supplies. IC Role / Device Role / Timing Role: LM2664M6X/NOPB generates −5.5 V from 3.3 V to meet RS-232 driver voltage swing requirements (±3 V to ±15 V). Use Value: Achieves compliant RS-232 output levels with 3.3 µF OS-CON capacitors and <50 mV p-p ripple at 10 mA load. |
Use Scenario: OLED or LCD displays in wearables require small negative bias voltages (e.g., −3 V) for contrast control and gate driving. IC Role / Device Role / Timing Role: LM2664M6X/NOPB supplies low-current negative bias with fast startup (<100 µs) and automatic shutdown during display sleep. Use Value: Reduces display subsystem quiescent power by 99% versus always-on linear inverters, extending wearable battery life by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Higher 125-kHz switching frequency; 100 mA output; requires 1 µF capacitors; ±5 V fixed output only | Fixed-output use cases where higher current and tighter regulation are needed, but input range limited to 4.5–6.5 V | Select MAX680ESA+ when ≥100 mA negative current is required and input voltage exceeds 4.5 V |
| TPS60403DBVR | Lower 500-kHz switching frequency; 60 mA output; integrated soft-start; 1.6–5.5 V input; 94% efficiency at 20 mA | Battery-powered systems requiring lower output ripple and better light-load efficiency than LM2664M6X/NOPB offers | Choose TPS60403DBVR for improved transient response and reduced capacitor count in space-constrained designs |
Compared with MAX680ESA+ and TPS60403DBVR, LM2664M6X/NOPB offers the widest input range (1.8–5.5 V), lowest shutdown current (1 µA), and smallest footprint (SOT-23-6), making it optimal for ultra-low-power, wide-input portable systems where 40 mA output suffices.
Availability
LM2664M6X/NOPB is available at Aetrix Electronics and suitable for portable instrumentation, op-amp dual-supply generation, RS-232 interface power, low-power display bias, and handheld medical device applications requiring stable component supply and long-term manufacturability.
Supply support for LM2664M6X/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 digital signal processing technologies, with over 50 years of leadership in power management innovation.
The LM2664M6X/NOPB belongs to TI's switched-capacitor DC/DC converter product line, engineered specifically for compact, inductorless voltage inversion in battery-powered portable electronics.
FAQ
What input voltage range does the LM2664M6X/NOPB support?
The LM2664M6X/NOPB supports an input voltage range of 1.8 V to 5.5 V, enabling direct operation from single-cell Li-ion, NiMH, alkaline, or regulated 3.3 V/5 V system rails. This range is validated across the full −40°C to +85°C operating temperature and ensures ≥90% conversion efficiency at nominal loads.
How much output current can the LM2664M6X/NOPB deliver?
The LM2664M6X/NOPB delivers up to 40 mA of continuous output current into a negative rail, with output voltage tracking −V+ (e.g., −3.3 V from 3.3 V input). At 40 mA, typical output impedance is 12 Ω, resulting in ≤480 mV droop - verified per Electrical Characteristics table in SNVS005E Rev E.
What is the shutdown current specification for LM2664M6X/NOPB?
The LM2664M6X/NOPB exhibits 1 µA typical shutdown current when the SD pin is pulled below 0.8 V (≤20% of V+). This ultra-low quiescent draw is confirmed across −40°C to +85°C and enables multi-year battery life in infrequently powered systems such as portable data loggers.
Which external capacitors are required for proper LM2664M6X/NOPB operation?
The LM2664M6X/NOPB requires two external capacitors: a 3.3 µF flying capacitor (C1) between CAP+ and CAP−, and a 3.3 µF output capacitor (C2) between OUT and GND. Low-ESR types - such as OS-CON aluminum polymer, TPS-series tantalum, or X7R ceramic - are recommended to maintain ≤12 Ω output impedance and <50 mV ripple at 40 mA.
Is the LM2664M6X/NOPB pin-compatible with other TI charge-pump inverters?
The LM2664M6X/NOPB uses a standard 6-pin SOT-23 (DBV) footprint with GND, OUT, CAP−, SD, V+, and CAP+ pin assignments. It is not pin-compatible with TI's LM277x series or TPS604xx family due to differing pin functions (e.g., EN vs SD logic polarity, different capacitor node placements), requiring PCB redesign for substitution.
LM2664M6X/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 or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 40mA
- Frequency - Switching:
- 80kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LM2664M6X/NOPB FAQ
1.How can I place an order for LM2664M6X/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2664M6X/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 LM2664M6X/NOPB reliable?
The price and inventory of LM2664M6X/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2664M6X/NOPB is usually 5 days.
3.What payment methods are accepted for LM2664M6X/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2664M6X/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2664M6X/NOPB?
LM2664M6X/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2664M6X/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 LM2664M6X/NOPB?
For technical support, including LM2664M6X/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2664M6X/NOPB requirements.
6.How does Aetrix verify that LM2664M6X/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2664M6X/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 LM2664M6X/NOPB meets industry standards.
7.What is the process for return or replacement of LM2664M6X/NOPB?
All LM2664M6X/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2664M6X/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 LM2664M6X/NOPB part is unused and in its original packaging.
Return procedure for LM2664M6X/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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