TC7660COA_1 Microchip Integrated Circuit (Small Outline Packages) In Stock
TC7660COA_1 is a CMOS switched-capacitor voltage converter by Microchip that inverts a positive 1.5 V to 10 V input into a corresponding negative output. Key specs: 10 V maximum input, up to 45 mA output current, 8-pin SOIC package. Available in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TC7660COA_1 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TC7660COA_1?
- Switched-capacitor voltage inversion: converts +1.5 V to +10 V input to negative output
- Up to 45 mA output current with only 2 external capacitors required
- Wide supply range: 1.5 V to 10 V enables single-cell to multi-cell battery operation
- Low quiescent current in CMOS design for efficient battery-powered circuits
- 8-pin SOIC package for compact SMT board layouts
- Pin-compatible with industry-standard ICL7660 charge pump topology
What is TC7660COA_1 used for?
The TC7660COA_1 is used in op-amp bias supply circuits, LCD contrast generators, and sensor interfaces that require a small negative rail derived from a positive battery or regulated supply. Its ability to generate a negative voltage from a single 1.5 V to 10 V source with minimal external components makes it popular in portable instruments and handheld devices.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TC7660COA_1 datasheet?
TC7660COA_1 Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for TC7660COA_1?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What input voltage range does the TC7660COA_1 support for generating a negative supply rail?
The TC7660COA_1 accepts a positive input from 1.5 V to 10 V and inverts it to produce a corresponding negative output voltage. At 5 V input, the output is typically -5 V, and the device can supply up to 45 mA of load current with only 2 external capacitors.
How many external components does TC7660COA_1 require for a basic voltage-inverting circuit?
A standard TC7660COA_1 voltage inverter requires only 2 external capacitors—one reservoir and one flying capacitor, each typically 10 µF. No inductors, diodes, or transformers are needed, making the total solution footprint very compact for an 8-pin SOIC design.
When is TC7660COA_1 a good fit compared to a small inverting DC-DC converter for generating a -5 V rail?
TC7660COA_1 is preferred when load current stays below 45 mA and PCB space is at a premium, since no inductor is needed and only 2 capacitors are required. For loads above 45 mA or where efficiency above 90% is critical, an inductor-based inverting converter like the LM2776 would be more appropriate.
Is TC7660COA_1 compatible with ICL7660-based designs already on existing PCBs?
Yes. TC7660COA_1 is a pin-compatible replacement for the industry-standard ICL7660 charge pump, sharing the same 8-pin DIP or SOIC pinout and requiring the same 10 µF flying and reservoir capacitors. Designers can substitute TC7660COA_1 without PCB layout changes on boards originally designed for ICL7660.
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