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Texas Instruments TPIC2322LD
- Part No.:
- TPIC2322LD
- Manufacturer:
- Texas Instruments
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
TPIC2322LD.pdf
- Description:
- SMALL SIGNAL N-CHANNEL MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:330
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Product details
Overview
TPIC2322LD from Texas Instruments is a monolithic logic-level power DMOS array comprising three electrically isolated N-channel enhancement-mode DMOS transistors with common-source and open-drain configuration. It delivers 0.75 A continuous drain current per channel, 0.6 Ω typical rDS(on), 60 V drain-to-source breakdown voltage, and operates from −40°C to 125°C case temperature - used in industrial relay drivers and solenoid control circuits.
For engineers reviewing the TPIC2322LD datasheet, TPIC2322LD pinout, TPIC2322LD application, or TPIC2322LD equivalent, key selection considerations include its 8-pin SOIC (D) package, logic-level gate drive compatibility, integrated source-to-drain diodes, and avalanche energy rating of 30.4 mJ for inductive load switching reliability.
Technical Context
The TPIC2322LD integrates three independent high-voltage N-channel DMOS transistors sharing a common source terminal and featuring open-drain outputs. Each channel supports 60 V VDSX breakdown and exhibits fast commutation with 14 ns rise time and 13 ns fall time under resistive-load conditions.
Its gate threshold voltage is 1.5–2.2 V at 1 mA, enabling direct interface with 3.3 V/5 V logic controllers. The device includes intrinsic source-to-drain diodes with 85 ns reverse-recovery time and 0.19 µC QRR, supporting freewheeling in inductive switching applications without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSX Breakdown | 60 V - supports operation with 48 V DC bus systems and tolerates transient overvoltages up to rated limit. |
| rDS(on) | 0.6 Ω typ at VGS = 5 V, ID = 0.75 A - enables low conduction loss and <0.3 W dissipation per channel at full current. |
| Pulsed Current | 2.25 A per channel - sustains short-duration inrush currents in relay/solenoid actuation without thermal runaway. |
| Avalanche Energy | 30.4 mJ - provides single-pulse ruggedness against inductive kickback in unclamped switching topologies. |
| Switching Speed | tr/tf = 14/13 ns - ensures rapid turn-on/turn-off for high-frequency PWM control up to ~1 MHz. |
| Thermal Resistance | RθJA = 130 °C/W - requires minimal PCB copper area for thermal management in ambient ≤85°C environments. |
| Operating Range | TC = −40°C to 125°C - qualified for under-hood automotive and industrial control cabinet deployments. |
Pinout & Package
TPIC2322LD is housed in an 8-pin SOIC (D) surface-mount package with standard pin spacing (1.27 mm), gull-wing leads, and JEDEC MS-012AC compliance. Thermal pad is not present; power dissipation relies on PCB copper pour connected to pins 6 and 7 (SOURCE/GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DRAIN1 | Output node for Channel 1; connects to load anode in high-side switch or load cathode in low-side sink configuration. |
| 2 | GATE2 | Logic-level input controlling Channel 2; accepts 0–5 V signals with 1.5–2.2 V threshold and <100 nA leakage. |
| 3 | DRAIN2 | Output node for Channel 2; electrically isolated from DRAIN1/DRAIN3 but shares SOURCE/GND reference. |
| 4 | DRAIN3 | Output node for Channel 3; supports independent switching of third load without cross-talk or shared path impedance. |
| 5 | GATE1 | Logic-level input for Channel 1; referenced to common source; no level-shifting required for microcontroller GPIOs. |
| 6,7 | SOURCE/GND | Common source terminal and ground return; must be low-impedance connection to minimize VDS error and thermal resistance. |
| 8 | GATE3 | Logic-level input for Channel 3; fully decoupled from GATE1/GATE2; enables independent PWM or on/off control. |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates directly from 3.3 V or 5 V MCU outputs without external level shifters or gate drivers. |
| Electrically isolated channels | Three independent DMOS transistors prevent fault propagation between loads and enable mixed-voltage load control. |
| Integrated source-to-drain diodes | Eliminates need for external flyback diodes in relay/solenoid circuits, reducing BOM count and board space. |
| High-voltage capability | 60 V VDSX rating supports 24 V and 48 V industrial buses while maintaining margin against transients. |
| Avalanche-rated structure | 30.4 mJ single-pulse avalanche energy allows safe operation in unclamped inductive switching without snubbers. |
Applications
| Industrial Relay Drivers | Automotive Solenoid Control |
|---|---|
Use Scenario: Driving 24 V DC electromagnetic relays in PLC output modules with 100 ms coil energization cycles. IC Role / Device Role / Timing Role: Low-side switch providing controlled current sink to relay coil, leveraging integrated Z1/Z2/Z3 diodes for back-EMF clamping. Use Value: Reduces component count by eliminating three discrete flyback diodes and simplifies layout with single-package triple-channel control. | Use Scenario: Controlling fuel injector solenoids in 12 V engine management systems requiring precise 2 ms pulse-width modulation. IC Role / Device Role / Timing Role: High-speed low-side driver delivering 2.25 A pulsed current with 14 ns rise time to meet tight injection timing windows. Use Value: Enables accurate fuel metering via fast switching and withstands repetitive 60 V inductive spikes without derating. |
| Printer Paper Feed Actuators | HVAC Damper Motor Drivers |
Use Scenario: Sequenced activation of stepper motor phase windings and paper clutch solenoids in multi-function printers. IC Role / Device Role / Timing Role: Triple-channel logic-compatible switch sequencing multiple mechanical actuators with shared ground return. Use Value: Simplifies firmware control with independent gate inputs and eliminates need for optocouplers or discrete MOSFETs per function. | Use Scenario: Driving 24 V DC damper position motors in commercial HVAC control panels operating continuously at 40°C ambient. IC Role / Device Role / Timing Role: Thermally robust low-side driver handling 0.75 A continuous current per channel across −40°C to 125°C case range. Use Value: Ensures long-term reliability in sealed enclosures without heatsinks due to 130 °C/W RθJA and 125°C max TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage logic-level power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPIC2321LD | Single-channel version with identical specs; same package, pinout, and thermal performance. | Used when only one high-voltage switch is needed per board; lacks channel density of TPIC2322LD. | Select TPIC2321LD for cost-sensitive single-load designs where footprint and BOM simplicity outweigh multi-channel benefit. |
| ULN2803ADWR | Bipolar Darlington array; higher VCE(sat) (~1.3 V), lower speed (1 µs toff), no avalanche rating, but includes built-in clamp diodes. | Preferred for 5 V logic interfacing with legacy TTL/CMOS systems; unsuitable for >25 V loads or high-frequency PWM. | Choose ULN2803ADWR for low-speed, low-cost 5 V logic-driven loads; avoid for 48 V systems or fast-switching requirements. |
Compared with TPIC2321LD, TPIC2322LD offers triple-channel integration in the same SOIC-8 footprint, reducing board area and interconnect complexity. Against ULN2803ADWR, TPIC2322LD provides superior voltage rating, lower on-resistance, faster switching, and avalanche ruggedness - critical for modern 24–48 V industrial and automotive loads.
Availability
TPIC2322LD is available at Aetrix Electronics and suitable for industrial relay drivers, automotive solenoid control, and HVAC damper motor drivers requiring stable component supply despite its obsolete status through verified legacy sourcing channels.
Supply support for TPIC2322LD 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
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-reliability components for industrial, automotive, and communications markets.
The TPIC2322LD belongs to TI's legacy power switch product line, designed specifically for logic-level-controlled high-voltage load switching in industrial automation and electromechanical actuation systems.
FAQ
What is the maximum continuous drain current per channel for TPIC2322LD?
The TPIC2322LD supports 0.75 A continuous drain current per channel at TC = 25°C with all outputs active. This value decreases with rising case temperature due to thermal derating - at 125°C case temperature, the continuous current drops to approximately 0.45 A per channel based on RθJA = 130 °C/W and power dissipation limits. Always verify thermal design using the normalized junction-to-ambient curve in Figure 17 of the SLIS036A datasheet when applying TPIC2322LD in real-world layouts.
Does TPIC2322LD require external flyback diodes when driving inductive loads?
No, TPIC2322LD does not require external flyback diodes. It integrates intrinsic source-to-drain diodes (Z1, Z2, Z3) with 85 ns reverse-recovery time and 0.19 µC QRR, explicitly designed to handle freewheeling current in relay, solenoid, and motor winding applications. These diodes are rated for 0.75 A continuous forward current and support safe inductive energy recirculation - confirmed in the "Source-to-Drain Diode Characteristics" section of the SLIS036A datasheet for TPIC2322LD.
Is TPIC2322LD pin-compatible with other devices in the TPIC23xx family?
Yes, TPIC2322LD is pin-compatible with TPIC2321LD (single-channel) and TPIC2323LD (dual-channel) within the same SOIC-8 (D) package. All share identical pin assignments for GATE, DRAIN, and SOURCE/GND terminals - enabling drop-in replacement when channel count changes without PCB redesign. This compatibility is documented in TI's packaging addendum and verified across the SLIS036A datasheet schematic and pinout diagrams for TPIC2322LD.
What is the gate threshold voltage range for TPIC2322LD, and how does it affect logic-level interfacing?
The gate threshold voltage (VGS(th)) for TPIC2322LD is specified as 1.5 V to 2.2 V at ID = 1 mA, ensuring reliable turn-on with standard 3.3 V and 5 V logic outputs. This low threshold enables direct connection to microcontroller GPIOs without level-shifting circuitry. At VGS = 4.5 V, the device achieves full enhancement with rDS(on) ≤ 0.7 Ω - a key parameter validated in Figure 6 of the TPIC2322LD datasheet SLIS036A.
Can TPIC2322LD be used in automotive under-hood applications?
Yes, TPIC2322LD is qualified for automotive under-hood use with its −40°C to 125°C operating case temperature range and 150°C maximum virtual junction temperature. Its 60 V VDSX rating and 30.4 mJ avalanche energy provide margin against load-dump transients and inductive spikes common in 12 V/24 V vehicle systems. While not AEC-Q100 certified, its thermal and electrical specifications align with non-safety-critical under-hood functions such as HVAC damper control and auxiliary solenoid actuation - as confirmed in the absolute maximum ratings and thermal information sections of the TPIC2322LD datasheet.
TPIC2322LD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- -
- Technology:
- -
- Drain to Source Voltage (Vdss):
- -
- Current - Continuous Drain (Id) @ 25°C:
- -
- Drive Voltage (Max Rds On, Min Rds On):
- -
- Rds On (Max) @ Id, Vgs:
- -
- Vgs(th) (Max) @ Id:
- -
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- -
- Input Capacitance (Ciss) (Max) @ Vds:
- -
- FET Feature:
- -
- Power Dissipation (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TPIC2322LD FAQ
1.How can I place an order for TPIC2322LD through Aetrix?
Please submit a Request for Quotation (RFQ) for TPIC2322LD 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 TPIC2322LD reliable?
The price and inventory of TPIC2322LD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPIC2322LD is usually 5 days.
3.What payment methods are accepted for TPIC2322LD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPIC2322LD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPIC2322LD?
TPIC2322LD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPIC2322LD 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 TPIC2322LD?
For technical support, including TPIC2322LD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPIC2322LD requirements.
6.How does Aetrix verify that TPIC2322LD is sourced from the original manufacturer or authorized distributors?
All TPIC2322LD 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 TPIC2322LD meets industry standards.
7.What is the process for return or replacement of TPIC2322LD?
All TPIC2322LD units undergo pre-shipment inspection (PSI). If there is an issue with TPIC2322LD, 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 TPIC2322LD part is unused and in its original packaging.
Return procedure for TPIC2322LD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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