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Microchip Technology TC682COA713
- Part No.:
- TC682COA713
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TC682COA713.pdf
- Description:
- IC REG CHRG PUMP INV 10MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,005
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Product details
Overview
TC682COA713 from Microchip Technology is a CMOS charge pump voltage inverter that generates a regulated negative output voltage equal to –2×VIN from a single positive input supply (2.4V to 5.5V). It delivers up to 10 mA output current with 140 Ω typical source resistance, 92% power conversion efficiency, and requires only three external capacitors. It is used in portable instruments, LCD bias generation, and op-amp dual-supply systems.
For engineers reviewing the TC682COA713 datasheet, TC682COA713 pinout, TC682COA713 application, or TC682COA713 equivalent, key selection criteria include its fixed inverting doubler topology, SOIC-8 package, 12 kHz internal oscillator, low quiescent current (185 µA), and suitability for space-constrained battery-powered analog power rails.
Technical Context
The TC682COA713 implements a two-phase switched-capacitor charge pump using internal MOSFET switches clocked by a 12 kHz on-chip oscillator. Its architecture alternates between charging C1/C2 during Phase 1 and transferring charge to the output reservoir capacitor during Phase 2 to achieve precise –2×VIN inversion.
It features integrated Zener clamping (VIN ≤ +5.8V, VOUT ≥ –11.6V), operates over 0°C to +70°C, and maintains stable output impedance (140–320 Ω) across load and temperature - critical for driving op-amp inputs or LCD segment drivers without external regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Inverting voltage doubler: outputs –2×VIN with no inductor required |
| Input Voltage Range | +2.4V to +5.5V - supports single-cell Li-ion (3V), USB (5V), and logic rail inputs |
| Output Current | Up to 10 mA - sufficient for biasing op-amps, LCD segments, or sensor interfaces |
| Supply Current | 185 µA (typ.) at no load - enables ultra-low-power operation in standby mode |
| Oscillator Frequency | 12 kHz (typ.) - fixed internal clock eliminates need for external timing components |
| VOUT Source Resistance | 140 Ω (typ.) at 25°C - determines voltage droop under load (e.g., 1.4 V drop at 10 mA) |
| Power Efficiency | 92% (typ.) at 2 kΩ load - minimizes thermal rise and extends battery life |
Pinout & Package
TC682COA713 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27 mm pitch, 3.9 mm width, and RoHS-compliant lead finish. Pin 1 is marked with a notch or dot per JEDEC MS-012.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1– | Capacitor C1 negative terminal | Connects to negative side of first flying capacitor; critical for charge transfer phase timing |
| C2+ | Capacitor C2 positive terminal | Connects to positive side of second flying capacitor; forms charge transfer path in Phase 1 |
| C2– | Capacitor C2 negative terminal | Completes C2 connection; referenced to GND during Phase 2 for voltage inversion |
| VOUT | Negative output voltage terminal | Delivers –2×VIN; must be decoupled with ≥10 µF reservoir capacitor for <60 mV ripple at 10 mA |
| GND | Ground reference | Common return for VIN, C1, C2, and load; requires low-impedance PCB plane |
| VIN | Positive input supply | Accepts 2.4–5.5V; internally clamped to 5.8V max to prevent damage |
| C1+ | Capacitor C1 positive terminal | Connects to positive side of first flying capacitor; switched between VIN and GND |
| NC | No connection | Internally unconnected; must remain floating - no PCB trace or component attached |
Key Features
| Feature | Design Value |
|---|---|
| Fixed inverting doubler topology | Eliminates need for external feedback or regulation circuitry - simplifies BOM and layout |
| Ultra-low quiescent current | 185 µA typical - enables >1-year battery life in low-duty-cycle handheld meters |
| Integrated 12 kHz oscillator | Removes external clock source or crystal - reduces component count and EMI risk |
| Low output source impedance | 140 Ω typical - ensures stable –10V output from 5V input even under 10 mA dynamic load |
| Three-capacitor implementation | Only C1, C2 (flying), and COUT (reservoir) required - ideal for compact PCB footprints |
Applications
| Portable Handheld Instruments | LCD Display Bias Generator |
|---|---|
Use Scenario: Battery-powered digital multimeter requiring ±5V rails for analog front-end op-amps. IC Role / Device Role / Timing Role: Generates –5V from 3V lithium cell to complete dual-supply op-amp configuration. Use Value: Enables rail-to-rail input range and accurate DC measurements without adding a second battery or inductor-based converter. | Use Scenario: Monochrome STN LCD panel in industrial HMI requiring –10V segment bias voltage. IC Role / Device Role / Timing Role: Inverts and doubles +5V logic supply to produce stable –10V bias for contrast control. Use Value: Delivers low-noise, capacitor-filtered –10V with <60 mV ripple at 5 mA - meets display contrast stability requirements. |
| Operational Amplifier Power Supplies | Cellular Phone Peripheral Circuits |
Use Scenario: Low-noise instrumentation amplifier in portable medical sensor node needing symmetric ±3.3V supplies. IC Role / Device Role / Timing Role: Generates –3.3V from +3.3V main rail to power op-amp negative supply pin. Use Value: Maintains 140 Ω output impedance across –40°C to +85°C - ensures consistent common-mode rejection in varying environments. | Use Scenario: RF front-end IC biasing in legacy GSM handset requiring –6V for varactor tuning. IC Role / Device Role / Timing Role: Derives –6V from single 3V Li-ion cell to tune VCO frequency via reverse-biased diode. Use Value: Achieves 99.9% voltage conversion efficiency - minimizes cell drain during signal transmission bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting voltage doubler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Higher oscillator frequency (100 kHz), lower output impedance (60 Ω), but requires 4 external capacitors | Better suited for higher-current (>20 mA) or lower-ripple applications where board area allows extra cap | Select when lower output impedance and faster transient response outweigh added component count |
| ICL7660SIPAZ | Wider input range (1.5V–12V), higher max output current (20 mA), but 170 µA quiescent current and no internal clamp | Preferred for multi-cell or wide-VIN systems where input may exceed 5.5V | Choose when operating from 1.5–12V sources and higher load current is needed without thermal derating |
Compared with MAX680ESA+ and ICL7660SIPAZ, TC682COA713 offers the lowest external part count (3 caps), tightest thermal profile in SOIC-8, and built-in overvoltage protection - making it optimal for cost-sensitive, space-constrained 2.4–5.5V portable designs.
Availability
TC682COA713 is available at Aetrix Electronics and suitable for portable handheld instruments, LCD display bias generation, and operational amplifier power supplies requiring stable component supply across production lifecycles.
Supply support for TC682COA713 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
Microchip Technology Inc. is a U.S.-based semiconductor manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified fabrication facilities.
The TC682COA713 belongs to Microchip's legacy charge pump converter product line, designed specifically for low-power, inductorless negative voltage generation in battery-operated analog systems.
FAQ
What is the maximum input voltage rating for TC682COA713?
The TC682COA713 has an absolute maximum input voltage of +5.8V, enforced by on-chip Zener clamping. Operation above +5.5V is not recommended, as sustained overvoltage will shunt excess current through internal protection diodes and may degrade long-term reliability. For designs with transient spikes, external TVS or RC filtering is advised before the VIN pin.
Can TC682COA713 generate –5V from a 3V lithium battery?
Yes, TC682COA713 can generate approximately –6V from a nominal 3V lithium cell (VOUT ≈ –2×VIN), which is commonly regulated down to –5V using an external negative LDO like the TC54VC2702Exx. The device maintains 92% power efficiency and 140 Ω output impedance across the full 2.4–5.5V input range, ensuring stable performance as the battery discharges.
What capacitor values are recommended for TC682COA713?
Microchip specifies 3.3 µF low-ESR ceramic capacitors for C1 and C2 (rated ≥6VDC), and ≥10 µF for COUT (rated ≥12VDC). Using 10 µF COUT yields <60 mV peak-to-peak ripple at 10 mA load. Larger COUT values (e.g., 22 µF) further reduce ripple but increase start-up time; electrolytic capacitors are discouraged due to high ESR impact on ROUT.
Is TC682COA713 pin-compatible with TC682CPA?
Yes, TC682COA713 (SOIC-8) and TC682CPA (PDIP-8) share identical pinout and electrical specifications, differing only in package type and temperature grade (both rated 0°C to +70°C). Layouts designed for TC682COA713 can accommodate TC682CPA with no schematic or netlist changes - though thermal and mechanical constraints differ between SOIC and PDIP packages.
Does TC682COA713 require external feedback for output regulation?
No, TC682COA713 is an open-loop charge pump with fixed –2×VIN gain and no feedback path. Output voltage accuracy depends on input stability, capacitor ESR, and load current. For applications requiring tight regulation (e.g., ±1%), a downstream negative LDO such as the TC7660 or MIC5205-5.0YD5 is required - TC682COA713 serves solely as the unregulated inverted source.
TC682COA713 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- -2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 10mA
- Frequency - Switching:
- 12kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TC682COA713 FAQ
1.How can I place an order for TC682COA713 through Aetrix?
Please submit a Request for Quotation (RFQ) for TC682COA713 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 TC682COA713 reliable?
The price and inventory of TC682COA713 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC682COA713 is usually 5 days.
3.What payment methods are accepted for TC682COA713?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC682COA713 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC682COA713?
TC682COA713 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC682COA713 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 TC682COA713?
For technical support, including TC682COA713 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC682COA713 requirements.
6.How does Aetrix verify that TC682COA713 is sourced from the original manufacturer or authorized distributors?
All TC682COA713 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 TC682COA713 meets industry standards.
7.What is the process for return or replacement of TC682COA713?
All TC682COA713 units undergo pre-shipment inspection (PSI). If there is an issue with TC682COA713, 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 TC682COA713 part is unused and in its original packaging.
Return procedure for TC682COA713:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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