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Texas Instruments LM2663M
- Part No.:
- LM2663M
- Manufacturer:
- Texas Instruments
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM2663M.pdf
- Description:
- IC REG CHRG PUMP INV 200MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,703
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Product details
Overview
LM2663M from Texas Instruments is a CMOS switched-capacitor voltage inverter IC that converts 2.5 V to 5.5 V positive input into corresponding negative output, delivers up to 200 mA, features 150 kHz fixed oscillator frequency, 3.5 Ω typical output resistance, and 86% conversion efficiency at full load - used in portable medical instruments and op-amp dual-rail power supplies.
For engineers reviewing the LM2663M datasheet, LM2663M pinout, LM2663M application, or LM2663M equivalent, this page provides verified functional mode definitions, SOIC-8 package mapping, shutdown current specification (10 μA), and validated alternatives for low-quiescent-current inverting DC/DC conversion in space-constrained battery-powered systems.
Technical Context
The LM2663M implements a four-switch charge-pump topology with internal MOSFETs clocked at 150 kHz to invert V+ to −V+, using two external flying/output capacitors. Its shutdown pin (SD) enables 10 μA quiescent current mode by applying >2 V to SD while grounding it during normal operation.
Unlike the LM2662M, the LM2663M omits frequency-selectable FC logic and fixes oscillator frequency at 150 kHz; OSC cannot accept external clock input in voltage-doubling mode. LV must be tied to OUT in inverter configuration and supports low-voltage operation down to 2.5 V when properly biased.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports Li-ion, 3.3 V, and 5 V rails without external regulation |
| Output Current | 200 mA - sufficient for dual op-amp biasing or LCD bias generation |
| Oscillator Frequency | 150 kHz - fixed timing enables predictable ripple and capacitor sizing |
| Output Resistance | 3.5 Ω typical - defines voltage droop under load; includes switch RON and capacitor ESR contributions |
| Shutdown Current | 10 μA - enables ultra-low-power sleep states in handheld instrumentation |
| Conversion Efficiency | 86% at 200 mA - balances switching loss and conduction loss for portable operation |
| Package | SOIC-8 (4.90 mm × 3.91 mm) - surface-mount compatible with standard PCB assembly |
Pinout & Package
LM2663M is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, JEDEC MS-012AC compliant, thermal resistance RθJA = 170 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SD) | Shutdown control input | Apply >2 V to disable device and reduce IQ to 10 μA; tie to GND for active operation |
| 2 (CAP+) | Flying capacitor positive terminal | Connects to + terminal of C1; carries bidirectional switching current during charge transfer |
| 3 (GND) | Power ground reference | Common return path for V+, OUT, and internal oscillator; requires low-inductance layout |
| 4 (CAP−) | Flying capacitor negative terminal | Connects to − terminal of C1; forms pumping node with CAP+ |
| 5 (OUT) | Negative voltage output | Delivers inverted output (−V+) with 3.5 Ω effective source impedance |
| 6 (LV) | Low-voltage operation control | Must be tied to OUT in inverter mode; enables stable operation below 3.5 V input |
| 7 (OSC) | Oscillator control | Internal 15 pF node; accepts external capacitor to lower frequency; no external clock support in doubler mode |
| 8 (V+) | Positive supply input | Accepts 2.5–5.5 V input; powers internal logic and switches; bypass with ceramic capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 150 kHz oscillator | Enables consistent ripple frequency and predictable capacitor selection without FC pin routing |
| 10 μA shutdown current | Extends battery life in intermittent-use medical or test equipment by minimizing standby drain |
| 200 mA output capability | Supports dual op-amp rails or small-signal analog circuitry without external boost stages |
| SOIC-8 footprint | Facilitates drop-in replacement in legacy designs originally using LM2662 or LMC7660 |
| No inductor required | Eliminates EMI, size, and cost penalties associated with magnetic components in portable layouts |
Applications
| Medical Instrumentation | Operational Amplifier Power Supplies |
|---|---|
Use Scenario: Portable ECG or glucose meter requiring dual ±2.5 V rails from single 3.3 V Li-ion cell. IC Role / Device Role / Timing Role: Inverts 3.3 V to −3.3 V rail; operates at fixed 150 kHz to minimize noise coupling into analog front-end. Use Value: Enables rail-to-rail op-amp performance without inductors, reducing board area and EMI sensitivity in Class II medical devices. |
Use Scenario: Precision instrumentation amplifier needing symmetric ±5 V supplies from 5 V system rail. IC Role / Device Role / Timing Role: Generates clean −5 V output; LV pin tied to OUT ensures stable startup at nominal input. Use Value: Delivers 200 mA with 3.5 Ω output resistance, limiting voltage droop to <170 mV at full load for stable gain calibration. |
| Laptop Peripheral Interfaces | Handheld Test Equipment |
Use Scenario: USB-C dock providing RS-232 level shifting via ±12 V generation from 5 V bus. IC Role / Device Role / Timing Role: Cascaded LM2663M units generate −12 V; SD pin controlled by host MCU for dynamic power gating. Use Value: 10 μA shutdown current prevents battery drain during interface idle periods without firmware intervention. |
Use Scenario: Battery-powered multimeter requiring isolated negative bias for ADC reference and display driver. IC Role / Device Role / Timing Role: Inverter configured with low-ESR ceramic capacitors; OSC pin unused (open) for default 150 kHz operation. Use Value: 86% efficiency at 200 mA extends runtime beyond 8 hours on two AA cells while maintaining <50 mV ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2662M | 20/150 kHz selectable oscillator via FC pin; no SD pin; higher 0.3–1.3 mA operating current | Lacks shutdown mode; less suitable for duty-cycled portable instruments | Select LM2662M only if variable-frequency optimization or legacy FC-control compatibility is required |
| MAX680CPA+ | ±5 V fixed-output inverter; 100 kHz oscillator; 100 mA output; 8-pin DIP/SO | Lower current rating and fixed output limit restrict use to low-power signal conditioning | Choose MAX680CPA+ only for retrofitting legacy DIP-based designs where 100 mA suffices |
Compared with LM2662M and MAX680CPA+, the LM2663M uniquely combines 200 mA output, 10 μA shutdown, and fixed 150 kHz timing in SOIC-8 - making it optimal for new portable instrumentation where power-state control and load headroom are critical.
Availability
LM2663M is available at Aetrix Electronics and suitable for medical instrumentation, operational amplifier power supplies, laptop peripheral interfaces, and handheld test equipment requiring stable component supply across extended production lifecycles.
Supply support for LM2663M 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 and embedded processing technologies, with over 90 years of innovation in power management and signal chain solutions.
The LM266x family was designed specifically for compact, inductorless DC/DC voltage inversion and doubling in battery-powered portable electronics - emphasizing low quiescent current, high efficiency, and SOIC-packaged manufacturability.
FAQ
What is the minimum input voltage supported by the LM2663M?
The LM2663M supports a minimum input voltage of 2.5 V under recommended operating conditions. When input falls below 3.5 V, the LV pin must be tied to the OUT pin to ensure proper internal regulator operation and stable oscillator startup. This configuration enables reliable function down to 2.5 V, making LM2663M suitable for single-cell Li-ion or alkaline-powered devices.
Can the LM2663M be used as a positive voltage doubler?
Yes, the LM2663M can operate as a positive voltage doubler by reconfiguring connections: apply input to GND, use V+ as output, tie LV and OUT to GND, and omit external clock on OSC. In this mode, unloaded output equals 2×VIN, but OSC cannot accept external clock signals - unlike inverter mode. Startup requires Schottky diode D1 (e.g., 1N5817) to charge V+ and prevent latch-up.
What is the purpose of the SD pin on the LM2663M?
SD (Shutdown) is a dedicated digital input pin on the LM2663M that disables internal switching when driven above 2 V, reducing supply current to 10 μA. During normal operation, SD must be tied to GND. This feature enables precise power-gating control in battery-sensitive applications like handheld test gear, where microcontroller-driven sleep modes require sub-μA system-level leakage budgets.
How does the LM2663M differ from the LM2662M in pin functionality?
The LM2663M replaces the LM2662M's FC (Frequency Control) pin with SD (Shutdown), removing oscillator frequency selection but adding 10 μA shutdown capability. Pin 1 is SD on LM2663M versus FC on LM2662M; both share identical CAP+, GND, CAP−, OUT, LV, OSC, and V+ pin assignments. Layouts using LM2662M can reuse footprints but must repurpose FC net to SD and add shutdown logic.
What external components are required for basic LM2663M inverter operation?
A functional LM2663M inverter requires two external capacitors: a 47 μF low-ESR flying capacitor (C1) between CAP+ and CAP−, and a 47 μF low-ESR output capacitor (C2) between OUT and GND. Input bypassing demands a 1 μF ceramic capacitor between V+ and GND. All capacitors should be placed adjacent to respective pins using short, wide traces to minimize parasitic inductance and maintain 86% efficiency at 200 mA load.
LM2663M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for LM2663M through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2663M 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 reliable?
The price and inventory of LM2663M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2663M is usually 5 days.
3.What payment methods are accepted for LM2663M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2663M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2663M?
LM2663M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2663M 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?
For technical support, including LM2663M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2663M requirements.
6.How does Aetrix verify that LM2663M is sourced from the original manufacturer or authorized distributors?
All LM2663M 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 meets industry standards.
7.What is the process for return or replacement of LM2663M?
All LM2663M units undergo pre-shipment inspection (PSI). If there is an issue with LM2663M, 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 part is unused and in its original packaging.
Return procedure for LM2663M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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