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Texas Instruments LM2663M/NOPB
- Part No.:
- LM2663M/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2663M/NOPB.pdf
- Description:
- IC REG CHRG PUMP INV 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,467
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Product details
Overview
LM2663M/NOPB from Texas Instruments is a CMOS switched-capacitor voltage inverter IC that converts 2.5 V–5.5 V positive input to corresponding negative output, delivers up to 200 mA, features 150 kHz fixed oscillator frequency, 3.5 Ω typical output resistance, and 10 μA shutdown quiescent current. It enables compact, inductorless dual-rail power for op-amp supplies and portable instrumentation.
For engineers reviewing the LM2663M/NOPB datasheet, LM2663M/NOPB pinout, LM2663M/NOPB application, or LM2663M/NOPB equivalent, key selection criteria include its dedicated shutdown (SD) pin, SOIC-8 package compatibility, inverter/doubler mode flexibility, and low-noise charge-pump operation without magnetic components.
Technical Context
The LM2663M/NOPB implements a four-switch charge-pump topology with internal MOSFETs driven by a fixed 150 kHz oscillator. Its switching array alternates between charging and transferring charge via external flying (CAP+/CAP−) and output (OUT) capacitors to generate inverted voltage with no inductor required.
It supports three operating configurations: voltage inverter (V+ → −V+), positive doubler (GND → +2V+), and precision voltage divider (VIN/2). Mode selection is determined by external pin connections - LV tied to OUT for doubler mode, SD grounded for normal operation, and LV grounded for low-voltage (<3.5 V) inverter use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion and standard logic rails without external regulation |
| Oscillator Frequency | 150 kHz fixed - enables use of smaller, lower-ESR ceramic flying capacitors vs. lower-frequency alternatives |
| Max Output Current | 200 mA - sufficient for dual-rail op-amps, RS-232 drivers, and small-signal analog circuitry |
| Output Resistance | 3.5 Ω typical at 200 mA - defines load regulation error (e.g., 700 mV drop at full load) |
| Shutdown Current | 10 μA - extends battery life in sleep-mode portable systems |
| Conversion Efficiency | 86% typical at 200 mA - balances power loss and EMI vs. inductor-based DC/DC converters |
| Operating Junction Temp | −40°C to +105°C - qualified for industrial and medical embedded environments |
Pinout & Package
LM2663M/NOPB is housed in an 8-pin SOIC (D) package measuring 4.90 mm × 3.91 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown control input | Logic-high (>2 V) disables oscillator and reduces IQ to 10 μA; tie to GND for active operation |
| 2 (CAP+) | Flying capacitor positive terminal | Connects to anode of external flying capacitor (C1); carries bidirectional high-current switching pulses |
| 3 (GND) | Power ground reference | Primary return path for input supply, flying capacitor discharge, and output load current |
| 4 (CAP−) | Flying capacitor negative terminal | Connects to cathode of C1; forms charge-transfer node with CAP+ during pump cycles |
| 5 (OUT) | Negative voltage output | Delivers inverted output (−V+) in inverter mode; serves as ground reference in doubler mode |
| 6 (LV) | Low-voltage operation control | Must be tied to OUT in doubler mode; grounded for inverter operation below 3.5 V input |
| 7 (OSC) | Oscillator control | Internally biased at 15 pF; accepts external capacitor to reduce frequency; not externally clockable in doubler mode |
| 8 (V+) | Positive supply input | Accepts 2.5–5.5 V input; supplies internal logic and switch drivers; becomes output in doubler configuration |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated shutdown pin (SD) | Reduces quiescent current to 10 μA without external circuitry - critical for battery runtime in handheld instruments |
| Fixed 150 kHz oscillator | Enables consistent ripple frequency and predictable capacitor sizing - eliminates FC pin complexity of LM2662 |
| Three configurable topologies | Single IC supports inverter, doubler, and precision divider modes via pin-strapping - reduces BOM count and layout variants |
| Low 3.5 Ω output resistance | Minimizes load-induced voltage sag - maintains stable −5 V rail for rail-to-rail op-amps under 100 mA load |
| Inductorless architecture | Eliminates EMI, size, and cost penalties of magnetic components - ideal for space-constrained medical sensors |
Applications
| Operational Amplifier Power Supplies | Handheld Medical Instruments |
|---|---|
|
Use Scenario: Dual-rail op-amp circuits requiring ±5 V from a single 5 V supply in portable ECG front-ends. IC Role / Device Role / Timing Role: Voltage inverter generating clean, low-noise −5 V rail synchronized to internal 150 kHz charge-pump clock. Use Value: Enables rail-to-rail input/output swing without inductors - reduces PCB area by >30% vs. buck-boost solutions. |
Use Scenario: Battery-powered glucose meters needing isolated analog bias rails for ADC reference and sensor excitation. IC Role / Device Role / Timing Role: Inverter supplying −3.3 V from 3.3 V Li-ion cell, with SD pin controlled by microcontroller sleep state. Use Value: 10 μA shutdown current extends single-charge battery life to >12 months in standby mode. |
| Laptop Peripheral Interfaces | Industrial Sensor Signal Conditioning |
|
Use Scenario: RS-232 transceivers on ultrabook daughterboards requiring ±12 V from 5 V USB power. IC Role / Device Role / Timing Role: Cascaded LM2663M/NOPB devices generating −12 V via two-stage inversion with shared OSC timing. Use Value: Achieves −12 V at 20 mA with <50 mV ripple - meets TIA-232-F noise immunity requirements. |
Use Scenario: 4–20 mA loop-powered pressure transmitters needing precise ±15 V rails for analog front-end amplification. IC Role / Device Role / Timing Role: Precision voltage divider mode splitting 30 V loop supply into matched ±15 V references. Use Value: Maintains <0.1% matching error across temperature - eliminates need for trimming resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2662M/NOPB | Pin-compatible SOIC-8 with FC pin enabling 20/150 kHz oscillator selection; higher 0.3–1.3 mA operating current | Lacks dedicated shutdown pin; requires external enable logic for ultra-low-power sleep states | Select when variable oscillator frequency is needed to optimize capacitor size vs. efficiency trade-off |
| MAX680ESA+ | SOIC-8, 125 kHz oscillator, 100 mA max output, 8 Ω output resistance, no shutdown pin | Lower output current and higher output impedance limit use to low-power signal chains only | Select when legacy MAXIM footprint compatibility is required and load current stays below 100 mA |
Compared with LM2662M/NOPB, LM2663M/NOPB trades oscillator flexibility for guaranteed low-quiescent shutdown capability; compared with MAX680ESA+, it delivers 2× output current and half the output resistance - making it suitable for higher-load industrial analog rails.
Availability
LM2663M/NOPB is available at Aetrix Electronics and suitable for operational amplifier power supplies, handheld medical instruments, laptop peripheral interfaces, and industrial sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for LM2663M/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 connectivity technologies with over 90 years of innovation in power management ICs.
The LM266x family was designed specifically for compact, low-EMI, inductorless voltage conversion in battery-powered and space-constrained analog systems - targeting medical, portable, and industrial instrumentation markets.
FAQ
What is the primary function of the LM2663M/NOPB?
The LM2663M/NOPB is a CMOS switched-capacitor voltage inverter IC that converts a positive input voltage (2.5 V–5.5 V) into a corresponding negative output voltage. It operates without inductors, using external capacitors to achieve up to 200 mA output current. The LM2663M/NOPB also supports positive voltage doubling and precision voltage division modes depending on pin configuration.
How does the shutdown (SD) pin function on the LM2663M/NOPB?
The SD pin on the LM2663M/NOPB is an active-high shutdown control. Applying a voltage greater than 2 V places the device in shutdown mode, reducing quiescent current to 10 μA. During normal operation, SD must be tied to GND. This feature enables precise power gating in battery-powered systems - a key differentiator from the pin-compatible LM2662M/NOPB, which lacks a dedicated shutdown pin.
Can the LM2663M/NOPB be used as a positive voltage doubler?
Yes, the LM2663M/NOPB can operate as a positive voltage doubler by reconfiguring pin connections: GND becomes the input, V+ becomes the output, LV and OUT are tied to GND, and the Schottky diode D1 is added for startup. In this mode, the unloaded output equals +2× input voltage, with the internal oscillator powered between V+ and LV. Note that OSC cannot be driven by an external clock in doubler mode.
What are the recommended external capacitors for the LM2663M/NOPB?
TI recommends two 47 μF, low-ESR tantalum or ceramic capacitors: one (C1) between CAP+ and CAP− as the flying capacitor, and another (C2) between OUT and GND as the output capacitor. For improved ripple performance at 150 kHz, X7R ceramic capacitors with ≤100 mΩ ESR are preferred. Capacitor voltage ratings must exceed the absolute maximum input voltage (6 V) and expected output swing.
Is the LM2663M/NOPB pin-compatible with other members of the LM266x family?
Yes, the LM2663M/NOPB shares the same SOIC-8 (D) package and pinout as the LM2662M/NOPB, enabling direct PCB substitution where shutdown functionality is not required. However, the FC pin on the LM2662 is replaced by the SD pin on the LM2663M/NOPB, and LV pin behavior differs between inverter and doubler modes - requiring schematic review before drop-in replacement.
LM2663M/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin, Vin/2
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA
- Frequency - Switching:
- 10kHz, 75kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LM2663M/NOPB FAQ
1.How can I place an order for LM2663M/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2663M/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 LM2663M/NOPB reliable?
The price and inventory of LM2663M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2663M/NOPB is usually 5 days.
3.What payment methods are accepted for LM2663M/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2663M/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2663M/NOPB?
LM2663M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2663M/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 LM2663M/NOPB?
For technical support, including LM2663M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2663M/NOPB requirements.
6.How does Aetrix verify that LM2663M/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2663M/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 LM2663M/NOPB meets industry standards.
7.What is the process for return or replacement of LM2663M/NOPB?
All LM2663M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2663M/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 LM2663M/NOPB part is unused and in its original packaging.
Return procedure for LM2663M/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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