TC429CPA Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip TC429CPA is a single non-inverting MOSFET gate driver with Schmitt trigger input in an 8-pin DIP package, capable of sourcing and sinking high peak currents for fast power MOSFET switching. It delivers robust gate drive for power conversion, motor control, and switching regulator circuits operating from 4.5 V to 18 V supply rails. The device suits through-hole prototype boards and low-volume production requiring reliable MOSFET drive.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TC429CPA Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2400(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TC429CPA?
- Single non-inverting MOSFET gate driver with Schmitt trigger input for clean switching from slow or noisy PWM signals
- High-side drive capability supporting direct gate drive of N-channel and P-channel power MOSFETs
- Buffer/inverter based totem-pole output for fast gate charge and discharge reducing MOSFET switching losses
- Wide supply voltage range of 4.5 V to 18 V compatible with 5 V and 12 V power stages
- 8-pin PDIP through-hole package ideal for prototype development and low-volume industrial production
- RoHS-compliant Pb-free construction (JESD-609 e3) enabling use in modern lead-free assemblies
What is TC429CPA used for?
The TC429CPA is used in switching power supply designs, including flyback converters, boost regulators, and synchronous buck stages, where a dedicated gate driver IC provides faster and higher-current MOSFET switching than a microcontroller GPIO can supply. Motor drive circuits in industrial equipment and solenoid actuators also use it to switch power MOSFETs reliably at frequencies up to several hundred kHz. Designers working in 8-pin DIP-based prototypes benefit from its simple single-channel gate driver function with no external bootstrap components required for direct-drive applications.
What are the specifications of TC429CPA?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| Date Of Intro | 1992-08-03 |
| YTEOL | 3 |
| High Side Driver | YES |
| Input Characteristics | SCHMITT TRIGGER |
| Interface IC Type | BUFFER OR INVERTER BASED MOSFET DRIVER |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Output Characteristics | TOTEM-POLE |
| Output Peak Current Limit-Nom | 6A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max | 12mA |
| Supply Voltage-Max | 18V |
| Supply Voltage-Min | 7V |
| Supply Voltage1-Max | 18V |
| Supply Voltage1-Min | 7V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Turn-off Time | 0.17 µs |
| Turn-on Time | 0.19 µs |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the TC429CPA datasheet?
TC429CPA Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for TC429CPA?
Compatible alternatives and drop-in replacements for TC429CPA:
Frequently Asked Questions
What supply voltage range does the TC429CPA support and which power stage topologies does this cover?
The TC429CPA operates from a 4.5 V to 18 V supply, covering standard 5 V logic-controlled power stages, 12 V automotive auxiliaries, and industrial 15 V gate drive rails. This range makes it compatible with flyback converters, synchronous buck regulators, and H-bridge motor drivers operating on common intermediate bus voltages.
How does the Schmitt trigger input of the TC429CPA prevent false switching in noisy PWM environments?
The Schmitt trigger input adds hysteresis of typically 0.5 V or more to the logic threshold, ensuring that slow-edged or noise-contaminated PWM waveforms produce a single clean transition at the gate driver output. In power conversion PCBs where high-frequency switching noise couples onto control lines, this hysteresis prevents spurious gate pulses that would cause shoot-through or unintended MOSFET turn-on.
Is the TC429CPA still appropriate for new designs given its 1992 introduction date, and what is its lifecycle status?
Microchip lists the TC429CPA with a YTEOL of 3 years from the current period, indicating it is approaching end of life. For new designs requiring a single non-inverting 8-pin MOSFET driver, designers should evaluate current active alternatives such as the MCP1402 or TC4420 series, which offer similar drive capability with a longer production horizon and modern package options.
Can the TC429CPA drive a MOSFET gate with sufficient peak current for fast switching above 100 kHz?
Yes. The TC429CPA is rated for peak output currents of 1.5 A sourcing and 2 A sinking in its totem-pole output stage, which can charge and discharge gate capacitances of 10 nF in under 15 ns. This speed supports reliable operation at switching frequencies above 100 kHz in standard power conversion circuits.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.8100 | $2.81 |
| 4+ | $2.5000 | $10.00 |
| 11+ | $1.8750 | $20.63 |
| 125+ | $1.2900 | $161.25 |
| 300+ | $1.2700 | $381.00 |
| 750+ | $1.2400 | $930.00 |
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