CROSS-REFERENCE ALTERNATIVE
COS4427SR is a Chinese-manufactured MOSFET Gate Driver from COSINE (科山芯创) that cross-references to TC4427VOA (MICROCHIP), and also to MIC4427YM.
It is a SOP8 device positioned as a domestic-supply option against the imported: shorter lead times, no allocation risk and a stable price for volume production. Because the parts are not pin-identical in every case, the engineering checklist below lists what to verify before you commit.
Cross-reference · Before you substitute · Related parts · FAQ · Request a quote
COS4427SR — MOSFET Gate Driver, alternative to TC4427VOA
COS4427SR is supplied by Shenzhen Jingteng Electronics (JTDZ Tech) as a domestically sourced option for TC4427VOA (MICROCHIP), MIC4427YM (MICROCHIP). Imported parts in this class are frequently subject to allocation, long lead times and steep price swings. A Chinese-manufactured equivalent removes that exposure: the parts are production-validated in industrial, consumer and automotive designs and ship from stock on a short lead time.
Cross-reference chart — which imported parts does COS4427SR replace?
Every imported part number that COS4427SR is published as a cross-reference alternative to, per the COSINE (科山芯创) 2025 selection table:
| imported part number | brand | Replaced by (this part) |
|---|---|---|
| TC4427VOA | MICROCHIP | COS4427SR |
| MIC4427YM | MICROCHIP | COS4427SR |
Cross-reference means functional equivalence in the same application role. It is not a blanket claim of pin-for-pin identity — confirm package, pinout and the parameters listed below before you release a design change.
Device information
| Part number | COS4427SR |
| Manufacturer | COSINE (科山芯创) |
| Device class | MOSFET Gate Driver |
| Package | SOP8 |
| Pin Count | 8 |
| Verified and new, traceable date code | |
| Stock | In stock, ships within 24 hours |
| Description | MOSFET Gate Driver, SOP8 package. |
What to verify before substituting COS4427SR
These are the parameters that decide whether a cross-reference works in practice. Run through the list against the datasheet before releasing a change:
- Peak source and sink current into the real gate charge — the number that sets switching loss
- Input logic thresholds and compatibility with your 3.3 V or 5 V controller
- Under-voltage lockout (UVLO) thresholds, both rising and falling
- Propagation delay and delay matching between channels, which sets the dead time you must add
- Drive supply range and whether a bootstrap diode or isolated supply is required
- Output stage topology (inverting vs non-inverting, single vs dual channel) and its effect on control polarity
- Package and pinout
Typical applications
- Motor drive and inverter gate drive
- Switch-mode power supplies and DC-DC converters
- Class-D audio output stages
- Solenoid, relay and actuator driving
- Solar micro-inverters and battery chargers
- Industrial automation I/O
Related COSINE parts and alternatives
Other {BRAND} parts in the same device family or the same device class — useful when you are cross-referencing a whole BOM rather than a single line item.
| COSINE part | Package | Cross-references to | Relation |
|---|---|---|---|
| COS4427DT | DIP8 | TC4427VOA, MIC4427YM | Same series |
| COS1415 | SOT23-5 | MCP1415T-E/OT | MOSFET Gate Driver |
| COS1415R | SOT23-5 | MCP1415RT-E/OT, MCP1416RT-E/OT | MOSFET Gate Driver |
| COS1416 | SOT23-5 | MCP1416T-E/OT | MOSFET Gate Driver |
| COS4426SR | SOP8 | TC4426VOA, MIC4426YM | MOSFET Gate Driver |
| COS4426DT | DIP8 | TC4426VOA, MIC4426YM | MOSFET Gate Driver |
| COS4428SR | SOP8 | TC4428VOA, MIC4428YM | MOSFET Gate Driver |
| COS4428DT | DIP8 | TC4428VOA, MIC4428YM | MOSFET Gate Driver |
| COS4423SR | SOP8 | TC4423AVOA, MIC4423YM | MOSFET Gate Driver |
Frequently asked questions
What does COS4427SR replace?
According to the COSINE (科山芯创) 2025 cross-reference table, COS4427SR is published as an alternative to TC4427VOA (MICROCHIP), MIC4427YM (MICROCHIP).
Is COS4427SR a pin-to-pin drop-in for TC4427VOA?
Cross-reference means the part is intended for the same application role; it is not a blanket guarantee of pin-for-pin identity. Check package, pinout and the parameters listed under “What to verify” above, or send us your BOM and we will confirm before you commit.
Can you supply the TC4427VOA as well?
Yes. We source both the imported and the Chinese-manufactured alternative, so you can compare price, lead time and availability on the same quote.
What is the MOQ and lead time for COS4427SR?
MOQ 1 pc. COS4427SR is held in stock and ships within 24 hours; quotes are returned within 2 business hours. We ship worldwide including India, Vietnam and the Middle East.
Request a quote for COS4427SR
Send us the part number and target quantity — we reply within 2 business hours with price, stock and a cross-reference confirmation.
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Genuine original parts guaranteed — traceable lot & date code, X-ray / visual inspection and third-party test supported before shipment.
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