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Microchip Technology TC7660COA713
- Part No.:
- TC7660COA713
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TC7660COA713.pdf
- Description:
- IC REG CHARG PUMP INV 20MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:761
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Product details
Overview
TC7660COA713 from Microchip Technology is a charge pump DC-to-DC voltage converter IC that inverts +1.5V to +10V input to corresponding -1.5V to -10V output using only two external capacitors-no inductor required. It operates at 10 kHz nominal oscillator frequency, delivers 99.9% typical voltage conversion efficiency, and draws just 80 µA supply current at 5V input. It serves as a pin-compatible replacement for the industry-standard 7660 in RS-232 negative power supplies and data acquisition instrumentation.
For engineers reviewing the TC7660COA713 datasheet, TC7660COA713 pinout, TC7660COA713 application, or TC7660COA713 equivalent, key selection considerations include its SOIC-8 commercial-grade package, LV pin logic for low-voltage operation (<3.5V), OSC pin programmability for frequency tuning, and output source resistance of 70 Ω (typ) at 25°C-critical for load regulation in ±5V dual-supply generation.
Technical Context
The TC7660COA713 implements a two-phase switched-capacitor inverter architecture with internal RC oscillator, voltage level translator, and logic network controlling four MOSFET switches. Its operation requires no external diodes for high-voltage inversion and supports oscillator frequency adjustment via external capacitor on the OSC pin.
It features an internal voltage regulator enabling stable operation across 0°C to +70°C (C-suffix), with ESD protection ≥3 kV HBM on all pins. The LV pin must be tied to GND when V+ < 3.5V to ensure proper oscillator startup and switching behavior-this is not optional but a functional requirement per datasheet Section 3.5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.5V to +10V - defines minimum startup voltage and maximum safe operating supply without derating |
| Output Voltage | -1.5V to -10V - inverted, unregulated output directly proportional to input; no feedback loop |
| Oscillator Frequency | 10 kHz (typ), adjustable via OSC pin - sets switching speed and impacts capacitor sizing and ripple |
| Voltage Conversion Efficiency | 99.9% (typ) at no load - indicates near-ideal charge transfer with minimal loss in open-circuit condition |
| Supply Current | 80 µA (typ) at V+ = 5V - enables ultra-low-power operation in battery-backed or standby systems |
| Output Source Resistance | 70 Ω (typ) at 25°C, 20 mA load - determines output droop: ΔVOUT ≈ ILOAD × ROUT |
| ESD Protection | ≥3 kV HBM on all pins - ensures robustness during board handling and system integration |
Pinout & Package
TC7660COA713 is housed in an 8-pin narrow SOIC (SOIC-N) package, 3.90 mm body width, tape-and-reel format (713 suffix), rated for 0°C to +70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No connection | Internally unused; must remain floating-no PCB trace or component allowed |
| 2 (CAP+) | Charge pump flying capacitor positive terminal | Connects to high-side plate of external flying capacitor; polarity-sensitive in polarized designs |
| 3 (GND) | Common ground reference | Shared input/output return path; requires low-inductance layout to minimize noise coupling |
| 4 (CAP-) | Charge pump flying capacitor negative terminal | Connects to low-side plate of flying capacitor; reverse polarity damages device if miswired |
| 5 (VOUT) | Negative output voltage terminal | Delivers inverted output; connects to reservoir capacitor and load; output impedance varies with temperature/load |
| 6 (LV) | Low-voltage enable control | Mandatory GND tie for V+ < 3.5V; floating otherwise-controls internal oscillator biasing |
| 7 (OSC) | External oscillator frequency control | Bypass with capacitor to GND to reduce frequency; driven externally for synchronization or increase |
| 8 (V+) | Positive input supply | Primary power input; requires local 0.1 µF low-ESR bypass capacitor to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless voltage inversion | Eliminates EMI, size, and cost penalties of magnetic components-enables compact PCB layouts |
| Two-capacitor operation | Reduces BOM count and design complexity; supports standard 10 µF ceramic or tantalum capacitors |
| Programmable oscillator | Allows ripple/noise optimization and external clock synchronization-critical for mixed-signal systems |
| LV pin logic control | Ensures reliable startup and stable oscillation below 3.5V input-prevents erratic switching or failure to start |
| High ESD tolerance | 3 kV HBM rating simplifies handling and assembly without special ESD controls beyond standard practice |
Applications
| RS-232 Transceiver Power Supply | Data Acquisition System Bias |
|---|---|
Use Scenario: Generating -5V rail from existing +5V logic supply to power RS-232 line drivers/receivers (e.g., MAX232 interface). IC Role / Device Role / Timing Role: Standalone voltage inverter providing isolated negative rail; no timing interaction with host UART. Use Value: Eliminates need for separate negative supply or transformer-based solution-reduces bill-of-materials and board area by >40%. |
Use Scenario: Providing precision -5V reference for ADC front-end op-amps and sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Low-noise negative bias generator; output stability maintained via low ROUT (70 Ω typ) and regulated oscillator. Use Value: Enables true bipolar analog input ranges (±5V) without compromising SNR-meets 12-bit ADC accuracy requirements. |
| Portable Instrumentation Power | Dual-Supply Op-Amp Biasing |
Use Scenario: Battery-powered handheld meter requiring ±5V rails from single 9V alkaline cell. IC Role / Device Role / Timing Role: Efficient inverter stage feeding LDO post-regulator; LV pin grounded to support 9V → -9V conversion. Use Value: Achieves 98% typical power efficiency at light loads-extends battery life by >30% versus discrete charge-pump alternatives. |
Use Scenario: Biasing rail-to-rail op-amps in audio preamplifier stages where symmetric supply rejection is critical. IC Role / Device Role / Timing Role: Paired with complementary positive pump or LDO to generate matched ±5V rails. Use Value: Output source resistance (70 Ω) ensures <10 mV droop at 10 mA load-maintains PSRR >80 dB across audio band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge pump voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1044CPA+ | Same 8-pin PDIP package; 12 kHz oscillator; higher 120 µA quiescent current; requires external diode for >6V operation | Preferred in legacy through-hole designs; less efficient at light loads due to higher IQ | Select when PDIP footprint is fixed and oscillator frequency margin is acceptable |
| ICL7660SIPAZ | SOIC-8 package; 14 kHz oscillator; 100 µA IQ; integrated oscillator capacitor; no LV pin-simpler but inflexible below 4.5V | Better for new designs targeting 4.5–10V inputs; unsuitable for sub-3.5V operation | Choose for simplified layout where input never drops below 4.5V and higher frequency reduces capacitor size |
Compared with MAX1044CPA+ and ICL7660SIPAZ, the TC7660COA713 offers optimal trade-off for commercial SOIC designs requiring sub-3.5V compatibility, lowest quiescent current, and field-proven reliability-making it preferred for RS-232 and portable instrumentation where LV pin control and 80 µA IQ directly impact system runtime and startup robustness.
Availability
TC7660COA713 is available at Aetrix Electronics and suitable for RS-232 interface power generation, portable instrumentation biasing, and dual-supply op-amp circuits requiring stable component supply with commercial temperature range assurance.
Supply support for TC7660COA713 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 leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The TC7660 product line delivers low-cost, inductorless DC/DC voltage inversion for space-constrained and cost-sensitive applications-designed specifically for replacing legacy 7660-based supplies in communications, test equipment, and portable electronics.
FAQ
What is the function of the LV pin on the TC7660COA713?
The LV (Low Voltage) pin on the TC7660COA713 must be connected to GND when the input voltage (V+) is below 3.5V to ensure proper oscillator startup and stable switching operation. When V+ is ≥3.5V, the LV pin should remain floating. This is a mandatory functional requirement-not optional-and failure to observe it results in erratic or failed operation. The TC7660COA713 datasheet explicitly defines this behavior in Section 3.5 and Figure 5-1.
Can the TC7660COA713 generate regulated output voltage?
No, the TC7660COA713 provides unregulated inverted output-the output voltage follows VOUT ≈ –V+ with linear droop determined by load current and output source resistance (70 Ω typ). It contains no feedback loop or regulation circuitry. For regulated negative rails, the TC7660COA713 must be paired with an external LDO or linear regulator. This fundamental characteristic is confirmed across Electrical Characteristics (DS21465C-page 2) and Theory of Operation (Section 4.1).
What is the recommended capacitor type and value for TC7660COA713 operation?
Microchip specifies 10 µF low-ESR capacitors for both flying (CAP+/CAP−) and reservoir (VOUT/GND) positions in the TC7660COA713 reference design (Figure 1-1). Ceramic or tantalum types are recommended; electrolytic capacitors are discouraged due to higher ESR degrading efficiency and increasing output resistance. Larger values reduce output impedance and ripple but increase startup time-designers must balance these based on load transient requirements.
Does the TC7660COA713 support synchronization to an external clock?
Yes, the TC7660COA713 OSC pin supports external clock synchronization: applying a CMOS-level square wave (with 1 kΩ series resistor) allows precise control of switching frequency, eliminating beat frequencies in multi-rail systems. The output ripple frequency equals half the input clock frequency. This capability is documented in Section 5.4 and Figure 5-4 of the DS21465C datasheet and applies directly to the TC7660COA713 variant.
Is the TC7660COA713 pin-compatible with the original ICL7660?
Yes, the TC7660COA713 is explicitly designed as a pin-compatible replacement for the industry-standard ICL7660 and 7660-family devices, including identical pinout, function mapping, and electrical interface. Microchip states this in the General Description (DS21465C-page 1) and confirms compatibility across all 8-pin packages-including SOIC (OA), PDIP (PA), and CERDIP (JA). No PCB changes are required for drop-in replacement.
TC7660COA713 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:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 10kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TC7660COA713 FAQ
1.How can I place an order for TC7660COA713 through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7660COA713 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 TC7660COA713 reliable?
The price and inventory of TC7660COA713 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7660COA713 is usually 5 days.
3.What payment methods are accepted for TC7660COA713?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7660COA713 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7660COA713?
TC7660COA713 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7660COA713 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 TC7660COA713?
For technical support, including TC7660COA713 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7660COA713 requirements.
6.How does Aetrix verify that TC7660COA713 is sourced from the original manufacturer or authorized distributors?
All TC7660COA713 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 TC7660COA713 meets industry standards.
7.What is the process for return or replacement of TC7660COA713?
All TC7660COA713 units undergo pre-shipment inspection (PSI). If there is an issue with TC7660COA713, 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 TC7660COA713 part is unused and in its original packaging.
Return procedure for TC7660COA713:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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