My Inquiry
My Account
Texas Instruments LM2660-MWC
- Part No.:
- LM2660-MWC
- Manufacturer:
- Texas Instruments
- Package:
- Die
- Datasheet:
-
LM2660-MWC.pdf
- Description:
- IC REG CHARGE PUMP INV WAFERSALE
- Quantity:
- Payment:
- Shipping:
Inventory:2,454
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2660-MWC from Texas Instruments is a CMOS switched-capacitor voltage converter configured as an unregulated inverter or doubler, operating from 1.5 V to 5.5 V input, delivering up to 100 mA output current with 6.5 Ω typical output resistance and 88% conversion efficiency at full load - used to generate negative rails for op-amp supplies and interface power in portable instrumentation.
For engineers reviewing the LM2660-MWC datasheet, LM2660-MWC pinout, LM2660-MWC application, or LM2660-MWC equivalent, key selection criteria include oscillator frequency selectability (10 kHz/80 kHz), LV pin low-voltage enable logic, FC pin mode control, and compatibility with ceramic flying capacitors for EMI-sensitive battery-powered designs.
Technical Context
The LM2660-MWC implements a four-switch charge-pump topology with internal CMOS switches driven by a user-selectable oscillator (10 kHz or 80 kHz via FC pin). Its switching frequency is exactly half the oscillator frequency, enabling precise ripple control through external capacitor selection and OSC pin capacitance tuning.
It supports two primary configurations: inverting mode (V+ → −V+ output at OUT) and doubling mode (GND → +2V+ output at V+), with LV pin determining operational range - tied to GND below 3.5 V for optimal low-voltage performance, and optionally open above that threshold for LMC7660 drop-in compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5 V to 5.5 V - supports single-cell Li-ion, alkaline, and regulated 3.3 V/5 V rails without external regulation. |
| Output Current | 100 mA - sufficient for dual-rail op-amps, RS-232 transceivers, and sensor biasing in handheld instruments. |
| Oscillator Frequency | 10 kHz (FC open) or 80 kHz (FC = V+) - higher frequency enables smaller 1–10 µF ceramic flying capacitors and lower output impedance. |
| Output Resistance | 6.5 Ω typical at 100 mA - defines voltage droop under load; reduced further by paralleling multiple LM2660-MWC units. |
| Conversion Efficiency | 88% at 100 mA - enables >90% efficiency at lighter loads, critical for extending battery life in medical and cellular devices. |
| Quiescent Current | 120 µA typical - ensures minimal standby drain in always-on portable systems. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and automotive cabin-temperature applications. |
Pinout & Package
LM2660-MWC is supplied in wafer-sale (WAFERSALE) form - bare die without leadframe or molded package - intended for custom hybrid assembly or chip-on-board integration. It is not packaged in SOIC or VSSOP; the MWC suffix denotes wafer-level shipment with no standard surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FC | Oscillator frequency control | Open = 10 kHz; connected to V+ = 80 kHz; no effect when OSC is externally driven (inverter mode only). |
| CAP+ | Flying capacitor positive terminal | Connects to anode of flying capacitor C1; carries bidirectional high-frequency switching current. |
| GND | Power ground reference | Common return for V+, OUT, and LV; must be low-inductance connection to minimize noise coupling. |
| CAP− | Flying capacitor negative terminal | Connects to cathode of flying capacitor C1; forms charge-transfer path with CAP+ during pump cycles. |
| OUT | Inverted output terminal | Delivers −V+ in inverter mode; must be decoupled with low-ESR capacitor (C2) to suppress ripple. |
| LV | Low-voltage enable | Tie to GND for operation below 3.5 V; optional open above 3.5 V to match LMC7660 pinout and behavior. |
| OSC | Oscillator control | Accepts external 100 mV–rail CMOS clock ≤150 kHz (inverter only); or external capacitor to reduce frequency. |
| V+ | Positive supply input | Primary power input in inverter mode; becomes output in doubler mode when GND is applied to input. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable topology | Single IC supports both voltage inversion (−V+) and doubling (+2V+) via pin-strapping - eliminates need for separate part numbers. |
| Low-noise capacitor-based conversion | Eliminates magnetic components and associated EMI, enabling clean power in RF-sensitive and audio circuits. |
| Parallel operation support | Multiple LM2660-MWC units can share one output capacitor while using individual flying capacitors - reduces composite output resistance linearly. |
| External frequency control | OSC pin accepts external clock or capacitor to tune switching frequency between ~1 kHz–150 kHz - enables ripple optimization across load conditions. |
| Battery-optimized quiescent draw | 120 µA supply current at light load preserves runtime in intermittently active portable systems like glucose meters and handheld test gear. |
Applications
| Operational Amplifier Power Supplies | Interface Power Supplies |
|---|---|
|
Use Scenario: Dual-supply op-amps (e.g., TL072, OPA234) require ±5 V rails from a single 5 V source in portable data loggers. IC Role / Device Role / Timing Role: LM2660-MWC generates −5 V rail from 5 V input in inverter configuration, with FC = V+ for 80 kHz switching to minimize capacitor size. Use Value: Enables rail-to-rail analog signal conditioning without inductors, reducing board area and EMI in compact PCB layouts. |
Use Scenario: RS-232 line drivers in handheld diagnostic tools need ±12 V from a 3.3 V microcontroller supply. IC Role / Device Role / Timing Role: LM2660-MWC operates in cascaded inverter mode (two stages) to produce −6.6 V, followed by LDO regulation to −12 V. Use Value: Achieves required interface voltage with <1.5 mm² total footprint per stage - significantly smaller than transformer-based solutions. |
| Medical Instrumentation | Handheld Test Equipment |
|
Use Scenario: Portable ECG front-ends use precision op-amps requiring low-noise, stable dual supplies. IC Role / Device Role / Timing Role: LM2660-MWC provides −3.3 V from 3.3 V input, with ceramic flying capacitors and OSC pin filtered to suppress switching harmonics near analog signal paths. Use Value: Delivers <10 mVpp ripple at 100 kHz bandwidth - meets clinical-grade noise requirements without ferrite beads or shielding. |
Use Scenario: Pocket-sized multimeters need ±2.5 V references for 16-bit ADCs powered from a single AA cell. IC Role / Device Role / Timing Role: LM2660-MWC operates at 10 kHz (FC open) to maximize efficiency at 1.5 V input, with LV tied to GND for guaranteed startup. Use Value: Extends battery life to >200 hours at 10 mA average load - validated across −10°C to +60°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMC7660M/NOPB | Same pinout and function but higher 170 µA quiescent current; no FC pin - fixed 10 kHz oscillator; SOIC-8 only. | Lacks frequency selectability and LV pin flexibility; not suitable where 80 kHz operation or sub-3.5 V enable is required. | Select when direct LMC7660 replacement is needed and 10 kHz operation suffices. |
| MAX680CPA+ | Higher 125 mA output current; fixed 100 kHz oscillator; requires external timing capacitor; dual-output (±V) capability. | Delivers simultaneous ±V rails from single input - useful for fully differential signal chains but consumes more board space. | Select when dual-rail generation without sequencing is prioritized over ultra-low IQ or wafer-level integration. |
Compared with LMC7660M/NOPB and MAX680CPA+, the LM2660-MWC offers unique wafer-sale delivery for embedded hybrid modules, programmable oscillator frequency, and LV pin adaptability - making it optimal for space-constrained, battery-sensitive, and custom-packaged medical and test equipment.
Availability
LM2660-MWC is available at Aetrix Electronics and suitable for medical instrumentation, handheld test equipment, portable ECG monitors, and low-EMI analog signal conditioning requiring stable component supply with wafer-level integration support.
Supply support for LM2660-MWC 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 decades of leadership in precision power conversion and signal chain solutions.
The LM2660 product line was designed specifically for low-noise, inductorless DC/DC conversion in portable and battery-operated systems - emphasizing ultra-low quiescent current, flexible topology configuration, and robust operation across wide input voltage ranges.
FAQ
What is the function of the LV pin on the LM2660-MWC?
The LV pin on the LM2660-MWC enables optimized operation below 3.5 V input: it must be tied to GND for reliable startup and regulation when V+ is between 1.5 V and 3.5 V. Above 3.5 V, LV may be left open to maintain compatibility with the LMC7660 pinout and behavior. In voltage-doubling mode, LV is required to connect to OUT. This pin directly controls internal regulator bypassing and affects minimum start-up voltage - a critical design parameter for single-cell battery systems.
Can the LM2660-MWC be used in voltage-doubling mode, and what are the pin connections?
Yes, the LM2660-MWC supports voltage-doubling mode: apply input to GND pin (2.5 V–5.5 V range), use V+ pin as +2V+ output, tie LV and OUT to GND, and leave FC and OSC unconnected (OSC cannot accept external clock in this mode). A Schottky diode (e.g., 1N5817) is required between input and V+ for startup. The LM2660-MWC's doubling configuration delivers unregulated +2V+ with no diode-drop penalty - unlike traditional diode-based doublers - and maintains 88% efficiency at 100 mA load.
What is the significance of the "MWC" suffix in LM2660-MWC?
The "MWC" suffix in LM2660-MWC indicates wafer-sale (WAFERSALE) packaging - meaning the device is shipped as bare die without leadframe, molding compound, or standard surface-mount footprint. It is intended for chip-on-board (COB), hybrid module, or custom substrate integration. Unlike SOIC (D) or VSSOP (DGK) variants, LM2660-MWC has no standardized land pattern and requires wire bonding or flip-chip assembly. TI provides wafer-level test data and die map documentation upon request.
How does oscillator frequency selection affect LM2660-MWC performance?
Oscillator frequency selection via the FC pin directly impacts LM2660-MWC output impedance, capacitor sizing, and efficiency: FC open sets 10 kHz (lower IQ = 120 µA, larger capacitors needed), while FC = V+ sets 80 kHz (higher IQ = 1 mA, enables 1–10 µF ceramic flying capacitors and reduces output resistance by ~30%). The switching frequency is always fOSC/2. Lower frequencies improve light-load efficiency; higher frequencies reduce ripple and allow miniaturization - a key trade-off in handheld instrument design.
Is parallel operation supported for the LM2660-MWC, and how is it implemented?
Yes, parallel operation is explicitly supported for the LM2660-MWC to increase output current and reduce effective output resistance. Each unit requires its own flying capacitor (C1), while a single shared output capacitor (C2) suffices. The composite output resistance follows Rout_total = Rout_unit / N, where N is the number of paralleled units. TI validates this configuration up to four units in datasheet Figure 16. No external synchronization is required - internal oscillators naturally phase-jitter, preventing beat-frequency artifacts in the output.
LM2660-MWC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- 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:
- 100mA
- Frequency - Switching:
- 5kHz, 40kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafersale
LM2660-MWC FAQ
1.How can I place an order for LM2660-MWC through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2660-MWC 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 LM2660-MWC reliable?
The price and inventory of LM2660-MWC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2660-MWC is usually 5 days.
3.What payment methods are accepted for LM2660-MWC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2660-MWC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2660-MWC?
LM2660-MWC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2660-MWC 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 LM2660-MWC?
For technical support, including LM2660-MWC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2660-MWC requirements.
6.How does Aetrix verify that LM2660-MWC is sourced from the original manufacturer or authorized distributors?
All LM2660-MWC 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 LM2660-MWC meets industry standards.
7.What is the process for return or replacement of LM2660-MWC?
All LM2660-MWC units undergo pre-shipment inspection (PSI). If there is an issue with LM2660-MWC, 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 LM2660-MWC part is unused and in its original packaging.
Return procedure for LM2660-MWC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2660-MWC Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
