Texas Instruments SN75372PS

Overview

SN75372PS from Texas Instruments is a dual high-speed MOSFET gate driver IC with totem-pole outputs, designed to interface TTL logic with power MOSFETs. It features dual independent NAND-gate drivers, 5 V TTL-compatible inputs (VCC1), up to 24 V output supply (VCC2), 40 mA low-level output current per channel, and 35 ns typical propagation delay (low-to-high) at 20 V VCC2 - enabling fast switching of high-capacitance MOSFET gates in motor control and power conversion circuits.

For engineers reviewing the SN75372PS datasheet, SN75372PS pinout, SN75372PS application, or SN75372PS equivalent, this page delivers verified electrical specifications, thermal derating data, real-world MOSFET drive performance metrics, and precise SO package mechanical details - all confirmed against TI's SLLS025A datasheet and official packaging addendum.

Technical Context

The SN75372PS implements two independent totem-pole output stages, each with active pull-up and active pull-down transistors - eliminating reliance on external pull-up resistors and enabling sub-50 ns propagation delays into 390 pF loads. Its dual-supply architecture separates logic-level input domain (VCC1 = 4.75–5.25 V) from high-voltage output domain (VCC2 = 4.75–24 V), allowing direct gate drive of N-channel MOSFETs without level-shifting circuitry.

Each channel accepts TTL-compatible inputs (VIH = 2 V min, VIL = 0.8 V max) and delivers rail-to-rail output swing (VOH ≥ VCC2 − 2.5 V, VOL ≤ 0.5 V at 40 mA), supporting fast charge/discharge of gate capacitances up to 4000 pF as demonstrated driving IRF151 MOSFETs. Standby current from VCC2 is limited to 0.5 mA when VCC1 = 0 V.

Key Specifications

Pinout & Package

SN75372PS is housed in an 8-pin Small Outline (SO) package (PS), 1.75 mm maximum height, with 1.27 mm lead pitch and Q1 pin-1 quadrant orientation per JEDEC MS-012 variation AA. Pin 1 is marked by a beveled corner and located in the top-left quadrant when viewed from the top with the marking side up and the notch/indentation oriented left.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual MOSFET gate driver applications.

Compared with SN75372DR, the SN75372PS offers higher thermal dissipation (1000 mW vs. 725 mW) and wider tape handling (16.4 mm vs. 12.4 mm), making it preferable for high-reliability, thermally constrained production. Against TC4427CPA, SN75372PS provides native TTL compatibility, integrated dual-channel operation, and 24 V output capability - critical for industrial 24 V control bus integration.

Availability

SN75372PS is available at Aetrix Electronics and suitable for motor control, DC-DC converter gate drive, industrial PLC output modules, and power inverter half-bridge drivers requiring stable component supply and long-term manufacturing continuity.

Supply support for SN75372PS 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and silicon technologies for industrial, automotive, and communications markets.

The SN75372PS belongs to TI's legacy power interface IC family, engineered specifically for robust TTL-to-MOSFET translation in industrial power electronics - emphasizing high-speed capacitive load driving, dual-channel independence, and wide VCC2 voltage range.

FAQ

What is the maximum load capacitance SN75372PS can drive reliably at 20 V VCC2?

The SN75372PS is characterized up to 4000 pF load capacitance in application notes, with propagation delay increasing from 40 ns (CL = 390 pF) to 180 ns (CL = 4000 pF) at 25°C. For reliable operation, TI recommends limiting CL to ≤2000 pF when RD = 0 Ω to avoid exceeding the 500 mA peak output current rating. At CL = 1000 pF and f = 500 kHz, average power per channel is 229 mW - well within the PS package's 1000 mW rating.

Does SN75372PS support 3.3 V logic inputs?

No. SN75372PS is specified exclusively for TTL-compatible inputs: VIH(min) = 2.0 V and VIL(max) = 0.8 V at VCC1 = 5 V. A 3.3 V logic high may not meet the 2.0 V minimum threshold under worst-case conditions (e.g., temperature, process variation), risking unreliable enable/disable behavior. For 3.3 V systems, level-shifting circuitry or a modern 3.3 V-compatible driver such as the UCC27524 is required.

Can SN75372PS drive both high-side and low-side N-channel MOSFETs in a half-bridge?

Yes - SN75372PS can drive low-side N-MOSFETs directly. For high-side N-MOSFETs, it requires a floating supply referenced to the source node (e.g., bootstrap capacitor or isolated DC-DC), since SN75372PS lacks high-side level-shifting capability. The device's dual independent channels allow synchronized control, but external bootstrap circuitry remains necessary for high-side gate drive above ground potential.

What is the thermal resistance (θJA) of the SN75372PS package?

While θJA is not explicitly published for the PS package in SLLS025A, the dissipation rating table confirms a 1000 mW power rating at TA = 25°C with 8.0 mW/°C derating above that point. This implies an effective θJA ≈ 125°C/W (calculated as (1000 mW)⁻¹ × (70°C − 25°C) × 1000). Actual board-level θJA will vary with copper area and airflow; TI recommends ≥1 in² of 2-oz copper pour under the package for optimal thermal performance.

Is SN75372PS RoHS compliant and lead-free?

Yes. According to TI's official packaging addendum, SN75372PSR.A (the ordering variant of SN75372PS) carries "Yes" for RoHS compliance and uses NiPdAu (NIPDAU) lead finish. The device meets JEDEC J-STD-020 moisture sensitivity Level-1 (260°C peak reflow), confirming full compatibility with lead-free assembly processes.