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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Distribution Switches, Load Drivers

STMicroelectronics E-L9338MD/TR

Name: E-L9338MD/TR
Brand: STMicroelectronics
SKU: E-L9338MD/TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: E-L9338MD/TR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 20-SOIC (0.295", 7.50mm Width)

Datasheet:: E-L9338MD/TR.pdf

Description:: IC PWR DRIVER N-CHANNEL 1:1 20SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

E-L9338MD/TR from STMicroelectronics is a quad low-side DMOS driver IC designed for automotive and industrial load switching, featuring three open-drain outputs with R_DS(on) = 1.5 Ω (T_j = 25 °C, V_S > 6 V), programmable signal transfer polarity, integrated output clamping (V_FB > 45 V), and diagnostic status monitoring for overtemperature and supply/ground disconnection.

For engineers reviewing the E-L9338MD/TR datasheet, E-L9338MD/TR pinout, E-L9338MD/TR application, or E-L9338MD/TR equivalent, key selection considerations include its -24 V to +45 V input voltage tolerance, < 2 µA standby quiescent current, TTL/CMOS-compatible inputs, controlled output slew rate (2.5–16 V/µs), and thermal shutdown per channel with hysteresis.

Technical Context

The L9338 integrates four independent low-side drivers in Multipower-BCD technology, with three active DMOS outputs (OUT1–OUT3) and one dedicated diagnostic open-drain output (DIAG). Each output includes current limiting (400–1200 mA), thermal shutdown (T_j = 160–190 °C switch-off), and active flyback clamping (V_CLAMP = 45–60 V).

Input logic supports both inverting and non-inverting transfer polarity via the PRG pin; EN enables global sleep mode (< 2 µA I_Q); all inputs tolerate -24 V to +45 V and feature Schmitt-trigger hysteresis (~100 mV) for noise immunity. Diagnostic behavior is polarity-selectable and reports per-channel faults including overtemperature and open-ground/supply conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count & type	Three open-drain DMOS low-side switches with integrated clamping diodes
R_DS(on)	1.5 Ω max at V_S ≥ 6 V, I_O = 0.3 A, T_j = 25 °C - ensures low conduction loss for 285 mA continuous sink at 85 °C ambient
Supply voltage range	4.5 V to 32 V operating; -24 V to +45 V absolute max - supports cold-crank and load-dump robustness in 12/24 V automotive systems
Quiescent current	< 2 µA in sleep mode (EN low) - enables always-on system nodes without battery drain
Diagnostic output	Open-drain DIAG pin reporting overtemperature, open ground, or open supply - enables single-wire fault detection per channel
Output slew rate	2.5–16 V/µs - reduces EMI during switching of inductive loads like solenoids and relays
Flyback clamping voltage	45–60 V - limits inductive kickback without external components, enabling fast recirculation

Pinout & Package

The E-L9338MD/TR is housed in a 20-pin SOIC (SO20) package with exposed thermal pad, compliant with ECOPACK® environmental standards and rated for -40 °C to +150 °C junction temperature.

Pin/Terminal	Circuit Role	Design Meaning
IN1–IN4	Digital input control	TTL/CMOS-compatible; Schmitt-triggered with 100 mV hysteresis; tolerant of -24 V to +45 V
EN	Global enable	High = active; low = sleep mode (< 2 µA I_Q); internally pulled low if floating
PRG	Polarity configuration	Low = non-inverting; high = inverting transfer; internally pulled low if floating
OUT1–OUT3	Power output terminals	DMOS low-side switches with current limiting, thermal shutdown, and active flyback clamping
DIAG	Diagnostic status output	Open-drain; logic state indicates fault condition (overtemp, open GND/VS) based on PRG setting
VS	Main power supply	4.5–32 V nominal; withstands -24 V reverse bias and up to +45 V transients
GND (Pins 4,5,6,7,14,15,16,17)	Ground reference	Eight dedicated ground pins for low-impedance return paths and thermal dissipation

Key Features

Feature	Design Value
Reverse-bias protection	VS withstands -24 V continuously - eliminates need for external reverse-polarity protection diodes
Per-channel thermal shutdown	Independent switch-off at 160–190 °C with ~20 K hysteresis - prevents cumulative thermal runaway across outputs
Programmable transfer polarity	Single PRG pin selects inverting/non-inverting logic - simplifies interface with diverse MCU GPIO configurations
Defined off-state for open inputs	All inputs default to logic-low when unconnected - avoids unintended output activation in wiring-fault scenarios
Integrated flyback clamping	V_CLAMP = 45–60 V with fast response (< 200 µs) - replaces external TVS/clamp diodes for relay and solenoid driving

Applications

Automotive Body Control Module

Industrial PLC Output Stage

Use Scenario: Driving door locks, interior lamps, and window lift motors in 12 V vehicle architectures subject to cold-crank (-18 V) and load-dump (+40 V) transients.

IC Role / Device Role / Timing Role: Quad low-side driver providing isolated, current-limited, and thermally protected switching for resistive and inductive loads.

Use Value: Eliminates need for discrete protection components while enabling direct microcontroller interfacing and single-wire diagnostics via DIAG.

Use Scenario: Controlling 24 V DC solenoids, pneumatic valves, and indicator lamps in factory automation cabinets with strict EMI limits.

IC Role / Device Role / Timing Role: Low-side power switch with controlled slew rate (2.5–16 V/µs) and integrated flyback clamping to meet CISPR 11 Class A emissions.

Use Value: Reduces board area and BOM count by integrating clamp, current limit, and thermal protection - no external snubbers or sense resistors required.

Truck Lighting System

Off-Highway Equipment Control

Use Scenario: Switching high-current LED arrays and halogen lamps in heavy-duty commercial vehicles with wide battery voltage variation (-24 V to +32 V).

IC Role / Device Role / Timing Role: Robust load driver with -24 V reverse-bias tolerance and 32 V max operating supply - handles dual-battery and alternator ripple conditions.

Use Value: Enables fail-safe operation during battery reversal events and maintains output stability across full vehicle operating envelope.

Use Scenario: Managing hydraulic valve coils and sensor exciters in construction and agricultural machinery exposed to extreme ambient temperatures (-40 °C to +85 °C).

IC Role / Device Role / Timing Role: Thermally hardened quad driver with per-output shutdown and restart hysteresis - sustains operation under sustained overload without latch-up.

Use Value: Delivers field-reliable load control without derating, reducing need for redundant drivers or external thermal sensors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad low-side driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPIC2603DWR	Three-channel, not quad; no PRG-configurable polarity; higher R_DS(on) (2.5 Ω typ)	Lacks per-channel diagnostic reporting; requires external clamping for >40 V inductive spikes	Preferred where cost sensitivity outweighs diagnostic granularity and polarity flexibility
BD82001FV-M	Quad channel with integrated charge pump; higher V_S max (40 V); no reverse-bias tolerance (-24 V)	Requires external reverse-protection; lacks open-ground detection on DIAG output	Selected when bootstrap gate drive or higher-speed switching (>10 kHz) is prioritized over cold-crank robustness

Compared with TPIC2603DWR and BD82001FV-M, the E-L9338MD/TR uniquely combines quad-channel integration, -24 V reverse-bias capability, programmable polarity, and per-output thermal diagnostics - making it optimal for safety-critical automotive body electronics where fault visibility and supply resilience are mandatory.

Availability

E-L9338MD/TR is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC output stages, truck lighting systems, and off-highway equipment control requiring stable component supply across extended temperature and voltage ranges.

Supply support for E-L9338MD/TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The L9338 belongs to ST's Automotive Power Drivers product line, engineered specifically for robust, diagnostic-capable load switching in 12 V/24 V vehicle electrical systems and harsh industrial environments.

FAQ

What is the maximum continuous output current per channel at 85 °C ambient?

Each output can sink 285 mA continuously at 85 °C ambient without triggering thermal shutdown, based on the device's thermal design and 160–190 °C junction switch-off threshold with ~20 K hysteresis. This rating assumes proper PCB copper area and thermal vias per ST's SO20 layout recommendations.

Does the DIAG pin require an external pull-up resistor?

Yes - the DIAG pin is an open-drain output and requires an external pull-up resistor (typically 4.7 kΩ to V_CC) to generate a valid logic-high signal during fault conditions. Its behavior (active-high vs. active-low fault indication) depends on the PRG pin state as defined in Table 7 of the datasheet.

Can the E-L9338MD/TR drive inductive loads without external flyback diodes?

Yes - the integrated active flyback clamping circuit limits output voltage to 45–60 V during inductive turn-off, eliminating the need for external freewheeling diodes in most 12 V/24 V applications. However, for loads exceeding 0.3 A or with very high stored energy, external clamping may still be recommended for reliability.

How does the PRG pin affect diagnostic reporting?

When PRG = low, DIAG goes low during normal operation and high during fault (overtemperature, open GND/VS). When PRG = high, DIAG is disabled (high-impedance) during normal operation and pulled low only during fault - enabling polarity-selectable fault signaling compatible with different controller interrupt logic configurations.

E-L9338MD/TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 20-SOIC (0.295", 7.50mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 4

Ratio - Input:Output:: 1:1

Output Configuration:: Low Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 4.5V ~ 32V

Voltage - Supply (Vcc/Vdd):: Not Required

Current - Output (Max):: -

Rds On (Typ):: 1.7Ohm

Input Type:: Non-Inverting

Features:: -

Fault Protection:: Over Temperature

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-SO

E-L9338MD/TR FAQ

1.How can I place an order for E-L9338MD/TR through Aetrix?

Please submit a Request for Quotation (RFQ) for E-L9338MD/TR 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 E-L9338MD/TR reliable?

The price and inventory of E-L9338MD/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for E-L9338MD/TR is usually 5 days.

3.What payment methods are accepted for E-L9338MD/TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for E-L9338MD/TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for E-L9338MD/TR?

E-L9338MD/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your E-L9338MD/TR 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 E-L9338MD/TR?

For technical support, including E-L9338MD/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your E-L9338MD/TR requirements.

6.How does Aetrix verify that E-L9338MD/TR is sourced from the original manufacturer or authorized distributors?

All E-L9338MD/TR 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 E-L9338MD/TR meets industry standards.

7.What is the process for return or replacement of E-L9338MD/TR?

All E-L9338MD/TR units undergo pre-shipment inspection (PSI). If there is an issue with E-L9338MD/TR, 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 E-L9338MD/TR part is unused and in its original packaging.

Return procedure for E-L9338MD/TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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