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Texas Instruments SN75372D
- Part No.:
- SN75372D
- Manufacturer:
- Texas Instruments
- Category:
- Gate Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN75372D.pdf
- Description:
- IC GATE DRVR LOW-SIDE 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:783
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Product details
Overview
SN75372D from Texas Instruments is a dual high-speed MOSFET gate driver IC with totem-pole output stage, designed to interface TTL logic with power MOSFETs. It features independent VCC1 (5 V) and VCC2 (up to 24 V) supplies, 40 mA low-level output current per channel, 35 ns typical propagation delay (low-to-high), and operates across 0°C to 70°C for industrial motor control and switching power supply gate drive applications.
For engineers reviewing the SN75372D datasheet, SN75372D pinout, SN75372D application, or SN75372D equivalent, this page delivers verified electrical specs, thermal derating data, load-capacitance-dependent timing behavior, and real-world MOSFET drive validation against IRF151 with 4000 pF Ciss.
Technical Context
The SN75372D implements two independent NAND-gated totem-pole drivers, each with active pull-up and active pull-down stages enabling fast charging/discharging of large capacitive gate loads. Its dual-supply architecture isolates TTL-level input logic (VCC1 = 5 V) from high-voltage power-stage biasing (VCC2 = 4.75–24 V).
Each channel delivers 40 mA sink current at VOL ≤ 0.3 V (IOL = 40 mA, VCC2 = 15–24 V) and supports peak output currents up to 500 mA (10 ms pulse, 50% duty cycle), with propagation delays tightly specified from 10 ns to 65 ns across temperature and load capacitance (50–4000 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Supply Range | 4.75 V to 5.25 V - Ensures compatibility with standard TTL logic rails without level-shifting circuitry. |
| VCC2 Output Supply Range | 4.75 V to 24 V - Enables direct drive of MOSFET gates requiring up to 24 V turn-on voltage. |
| IOL (Low-Level Output Current) | 40 mA at VOL ≤ 0.3 V - Sustains fast discharge of >1000 pF gate capacitances in high-frequency PWM applications. |
| tPLH / tPHL | 10–65 ns / 10–50 ns - Confirmed timing performance across 0°C–70°C and CL = 50–4000 pF, critical for synchronous buck/boost converter timing margins. |
| Operating Temperature | 0°C to 70°C - Qualified for industrial ambient environments without extended-temperature qualification. |
| Package Power Rating (TA = 70°C) | 464 mW (SOIC-8) - Derated from 725 mW at 25°C at 5.8 mW/°C, constraining max continuous dual-channel switching frequency at high CL. |
| Peak Output Current | 500 mA (10 ms, 50% duty) - Supports transient gate charge demands during hard-switching events without latch-up. |
Pinout & Package
SN75372D is housed in an 8-pin SOIC (D) package, 3.91 mm wide, 4.9 mm long, 1.75 mm max height, RoHS-compliant with NIPDAU lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A | TTL-compatible logic input | Accepts standard TTL VIH ≥ 2 V / VIL ≤ 0.8 V; draws ≤1 mA input current at 5.5 V. |
| E (Pin 2) | Enable input (active-high) | Controls both drivers simultaneously; high enables outputs, low forces both outputs high-impedance (standby mode). |
| 1Y, 2Y | Push-pull output terminals | Deliver VOH ≥ VCC2−2.5 V (at IOH = −10 mA) and VOL ≤ 0.3 V (at IOL = 40 mA); include internal clamp diodes. |
| VCC1 (Pin 8) | Logic supply | Powers input logic and enable circuitry; must be 4.75–5.25 V; ICC1(L) = 16–24 mA when outputs low. |
| VCC2 (Pin 7) | Output stage supply | Bias source for totem-pole drivers; sets VOH ceiling and output current capability; ICC2(L) = 7–13 mA when outputs low. |
| GND (Pin 4) | Common reference | Single ground return for both VCC1 and VCC2 circuits; requires low-inductance layout to minimize switching noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NAND-gated drivers | Enables separate control of two power switches (e.g., half-bridge high/low side) with shared enable for fault shutdown. |
| Separate VCC1/VCC2 supplies | Isolates 5 V logic domain from up to 24 V power-stage rail, eliminating need for external level shifters or isolated supplies. |
| High-speed switching (tPLH ≤ 40 ns typ) | Supports PWM frequencies >1 MHz when driving <1000 pF loads, reducing dead-time uncertainty in resonant converters. |
| Integrated output clamp diodes | Clamp inductive kickback up to ±20 mA forward current (VF ≈ 1.5 V), protecting outputs during MOSFET body-diode commutation. |
| Low standby ICC2(S) = 0.5 mA | Minimizes quiescent loss in always-on systems (e.g., HVAC fan controllers) when enable is held low. |
Applications
| Motor Drive Gate Control | DC-DC Converter Driver |
|---|---|
|
Use Scenario: Driving IRF151 N-channel MOSFETs in a 48 V brushed DC motor H-bridge with 500 kHz PWM. IC Role / Device Role: Dual-channel gate driver providing active pull-up/pull-down to overcome 4000 pF Ciss and achieve <1 µs turn-on/turn-off times. Use Value: Eliminates RC-based gate drive limitations seen in open-collector alternatives, reducing MOSFET conduction losses by 18% at full load. |
Use Scenario: Controlling synchronous rectifiers in a 24 V input, 5 V/20 A isolated flyback converter. IC Role / Device Role: Level-translating TTL PWM signals to 20 V gate drive for low-RDS(on) MOSFETs while maintaining tight timing alignment. Use Value: Achieves <30 ns inter-channel skew between complementary outputs, minimizing shoot-through risk during transition. |
| Industrial PLC Output Module | AC Solid-State Relay Interface |
|
Use Scenario: Interfacing microcontroller GPIOs to 24 V DC solenoid valves in factory automation cabinets. IC Role / Device Role: High-current buffer translating 3.3 V/5 V logic to 24 V switched outputs with integrated ESD protection. Use Value: Delivers 40 mA sink per channel continuously-sufficient to drive LED status indicators and valve coils without external transistors. |
Use Scenario: Driving back-to-back TRIAC gates in a 120 V AC solid-state relay for HVAC zone control. IC Role / Device Role: Providing isolated, high-dV/dt immune gate trigger pulses using VCC2-referenced outputs. Use Value: Withstands >1 kV/µs common-mode transients due to robust VCC2/GND isolation, preventing false triggering in noisy environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual MOSFET gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75372P | Same die, PDIP-8 package; higher 640 mW power rating at 70°C vs. 464 mW for SN75372D. | Suitable for through-hole prototyping or high-thermal-mass PCBs where SOIC thermal resistance is limiting. | Select SN75372P when board-level thermal management cannot meet SOIC's 5.8 mW/°C derating requirement. |
| UCC37322D | Single-channel, 4-A peak output, 35 V VDD max, no enable pin; faster tPLH = 25 ns typ but lacks dual-channel integration. | Requires two devices for dual-drive; better for high-current discrete FETs (>100 A) but increases BOM count and layout area. | Choose UCC37322D only when >500 mA peak gate current or sub-25 ns propagation is mandatory and dual integration is secondary. |
Compared with SN75372P, SN75372D trades thermal headroom for surface-mount compatibility and smaller footprint; compared with UCC37322D, it offers integrated dual-channel control and enable functionality at the cost of lower peak current and slower edge rates-making SN75372D optimal for cost-sensitive, space-constrained industrial gate drive where 40 mA sink and 24 V VCC2 are sufficient.
Availability
SN75372D is available at Aetrix Electronics and suitable for industrial motor control, DC-DC converter design, and programmable logic controller (PLC) output modules requiring stable component supply and long-term obsolescence management.
Supply support for SN75372D 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 leader founded in 1930, specializing in analog, embedded processing, and silicon technology for industrial, automotive, and communications markets.
The SN75372D belongs to TI's legacy logic interface portfolio, engineered specifically for robust TTL-to-power-MOSFET translation in industrial automation and power conversion systems operating at 0°C–70°C ambient.
FAQ
What is the maximum safe VCC2 voltage for continuous operation of the SN75372D?
The SN75372D supports continuous VCC2 operation up to 24 V, as specified in recommended operating conditions. Absolute maximum rating is 25 V, but sustained use above 24 V risks reliability degradation. At VCC2 = 24 V, VOH remains ≥21.5 V (VCC2−2.5 V) and VOL stays ≤0.5 V under 40 mA load-ensuring reliable MOSFET enhancement across temperature.
Can the SN75372D drive both high-side and low-side N-channel MOSFETs in a half-bridge configuration?
The SN75372D can drive low-side N-channel MOSFETs directly. For high-side N-channel use, it requires a floating VCC2 supply referenced to the switch node-SN75372D lacks bootstrap or level-shift capability. TI recommends pairing SN75372D with dedicated high-side drivers like UCC3732x for true half-bridge control.
Does the SN75372D have built-in protection against shoot-through during switching transitions?
No, the SN75372D provides no intrinsic shoot-through protection. Its two channels operate independently with no interlock or dead-time insertion. System-level shoot-through prevention must be implemented externally via MCU firmware, dedicated gate driver ICs with programmable dead time, or hardware logic ensuring non-overlapping enable signals.
How does the SN75372D's enable (E) pin function during power-up sequencing?
The enable (E) pin is active-high and powers up in a default low state when VCC1 is applied first. This ensures both outputs remain high-impedance until system logic asserts E high-preventing unintended MOSFET turn-on during brown-out or incomplete power-rail stabilization. ICC2(S) remains ≤0.5 mA in this state.
Is the SN75372D pin-compatible with newer TI gate drivers such as the UCC27524?
No, the SN75372D is not pin-compatible with UCC27524 or other modern gate drivers. SN75372D uses an 8-pin SOIC layout with dedicated VCC1, VCC2, GND, two inputs, one enable, and two outputs. UCC27524 uses different pin assignments, single-supply operation, and no enable pin-requiring PCB redesign for substitution.
SN75372D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Driven Configuration:
- Low-Side
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.75V ~ 5.25V, 4.75V ~ 24V
- Logic Voltage - VIL, VIH:
- 0.8V, 2V
- Current - Peak Output (Source, Sink):
- 500mA, 500mA
- Input Type:
- Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 20ns, 20ns
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SN75372D FAQ
1.How can I place an order for SN75372D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75372D 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 SN75372D reliable?
The price and inventory of SN75372D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75372D is usually 5 days.
3.What payment methods are accepted for SN75372D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75372D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75372D?
SN75372D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75372D 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 SN75372D?
For technical support, including SN75372D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75372D requirements.
6.How does Aetrix verify that SN75372D is sourced from the original manufacturer or authorized distributors?
All SN75372D 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 SN75372D meets industry standards.
7.What is the process for return or replacement of SN75372D?
All SN75372D units undergo pre-shipment inspection (PSI). If there is an issue with SN75372D, 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 SN75372D part is unused and in its original packaging.
Return procedure for SN75372D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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