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

STMicroelectronics L9848TR

Name: L9848TR
Brand: STMicroelectronics
SKU: L9848TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: L9848TR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: L9848TR.pdf

Description:: IC PWR DRIVER 1:8 28SO

Quantity:: RFQ Add To RFQ list

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Inventory:1,498

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Product details

Overview

L9848TR from STMicroelectronics is an octal configurable low/high side driver IC for automotive body control modules, supporting up to six high-side or low-side configurations (outputs 1–6) plus two dedicated low-side outputs (7–8), with R_DS(ON) ≤ 1.5 Ω at T_j = 25 °C, 0.8 A minimum current limit per channel, and 4.75–5.25 V supply voltage.

For engineers reviewing the L9848TR datasheet, L9848TR pinout, L9848TR application, or L9848TR equivalent, this device is selected for medium-current load driving in systems requiring SPI-controlled fault diagnostics, open-load detection, reverse-battery protection, and PWM-capable dual outputs (IN5/IN6).

Technical Context

The L9848TR integrates eight MOSFET output drivers with self-configuring topology: outputs 1–6 automatically adapt as high- or low-side based on external load connection, while outputs 7–8 are fixed low-side. Each configurable output includes clamping (−30 V high-side / +35 V low-side), thermal shutdown, and open-load detection in off-state.

SPI interface (8-bit command register, DO/DI/SCLK/CS) enables centralized control and fault reporting; IN5 and IN6 provide direct PWM override capability for outputs 5–6-intended only for non-inductive loads per specification. No VBatt pin exists; VBatt connects externally to DRN pins of high-side configured outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(ON)	≤1.5 Ω @ T_j = 25 °C - ensures <1.2 V drop at 0.8 A, minimizing power loss in high-side mode
Output current limit	Min. 0.8 A - provides robust short-circuit protection without external sensing
Supply voltage (VDD)	4.75–5.25 V - tightly regulated 5 V rail requirement for logic and gate drive integrity
Clamp voltage (low side)	≥35 V - suppresses inductive flyback transients from solenoids or lamps
Clamp voltage (high side)	−30 V - protects against negative battery transients and ground bounce
Thermal shutdown	155–185 °C junction threshold - prevents latch-up during sustained overload
SPI interface	8-bit command + fault register - enables daisy-chaining and real-time diagnostic readback

Pinout & Package

Package: SO-28 (Small Outline, 28-pin, 300 mil width, standard JEDEC MS-013AC). Pin layout optimized for automotive PCB routing with grouped SRC/DRN pairs and separated SPI/control signals.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Analog ground reference	Common return for internal biasing and fault sensing; must be low-impedance connection
VDD (Pin 2)	5 V logic supply input	Powers internal logic, SPI interface, and gate drivers; not connected to load power path
DRN1–DRN6 (Pins 5,7,11,18,22,24)	Drain terminals for configurable outputs	Connect to load (low-side) or battery (high-side); clamp voltage defined per mode
SRC1–SRC6 (Pins 4,6,10,19,23,25)	Source terminals for configurable outputs	Connect to load (high-side) or ground (low-side); polarity determines configuration
DRN7–DRN8 (Pins 3,26)	Fixed low-side drain outputs	Dedicated to ground-referenced loads only; no high-side capability
IN5/IN6 (Pins 9,20)	Direct PWM enable inputs	OR-ed with SPI commands; valid only for outputs 5–6 and non-inductive loads
CS/DI/SCLK/DO (Pins 16,15,14,28)	SPI interface signals	Enable daisy-chain configuration; DO supports multi-device fault readout

Key Features

Feature	Design Value
Self-configuring outputs 1–6	Automatically detects load connection polarity (high/low side) and adapts drive mode without external configuration pins
Open-load detection (off-state)	Uses integrated pull-up/pull-down current sources on SRC/DRN to identify disconnected loads before activation
Reverse battery protection	Withstands −13.5 V on SRC/DRN pins - eliminates need for external series diodes in 12 V automotive systems
Ground disconnection support	High-side outputs remain functional even if GND is lost, enabling fail-operational designs
Waveshaping control	Programmable slew rates (10–100 µs) reduce EMI during switching of inductive loads like motors and relays

Applications

Automotive Mirror Control

Window Lift Relay Driver

Use Scenario: Bidirectional DC motor control for electric side-view mirror folding and positioning.

IC Role / Device Role / Timing Role: Configures outputs 1–4 as H-bridge legs with complementary high/low-side pairing; uses IN5/IN6 for PWM speed regulation.

Use Value: Eliminates discrete H-bridge components; integrated clamping handles motor back-EMF up to 35 V.

Use Scenario: Driving electromechanical relays for power window up/down functions in door modules.

IC Role / Device Role / Timing Role: Uses outputs 5–6 as PWM-enabled low-side switches; outputs 7–8 as fixed low-side relay coils.

Use Value: Reduces MCU GPIO count by 6+ pins; thermal shutdown prevents relay coil burnout during jam conditions.

Climate Control Stepper Motor

Headlamp Bulb Driver

Use Scenario: Bipolar stepper motor actuation for HVAC blend door positioning in sequential mode.

IC Role / Device Role / Timing Role: Configures outputs 1–4 as full-H-bridge; uses SPI for precise phase sequencing and fault monitoring.

Use Value: Integrated current limiting (0.8 A) matches typical 24 V stepper phase ratings; open-load detection identifies broken windings.

Use Scenario: Incandescent bulb control for interior map lights and courtesy lamps.

IC Role / Device Role / Timing Role: Uses outputs 1–6 as configurable high-side drivers; leverages built-in inrush current management.

Use Value: Clamping and thermal protection extend bulb life; reverse-battery tolerance avoids fuse blow during jump-start events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal configurable driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE7238-8ES	8-channel high-side only; no low-side or self-configuring capability; higher R_DS(ON) (2.5 Ω)	Requires external low-side drivers for H-bridge use; lacks IN5/IN6 PWM inputs	Select when only high-side operation is needed and SPI daisy-chaining is not required
BD82003FV	Octal low-side only; no high-side or self-configuration; integrated current sense (0.5 V/A)	Cannot drive high-side loads directly; requires external high-side switches for bidirectional control	Select when precise current monitoring is critical and all loads are ground-referenced

Compared with TLE7238-8ES and BD82003FV, the L9848TR uniquely supports mixed high/low-side topology per channel, reduces BOM count in H-bridge and relay applications, and enables PWM override without MCU intervention-making it optimal for space-constrained automotive body controllers.

Availability

L9848TR is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor actuators, and smart lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for L9848TR 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, specializing in automotive, industrial, and power management ICs with broad manufacturing and qualification capabilities.

The L9848TR belongs to ST's automotive-grade intelligent power switch family, designed specifically for robust, SPI-managed load driving in harsh 12 V/24 V vehicle environments with extended temperature and transient immunity.

FAQ

What load types are supported by outputs 1–6?

Outputs 1–6 support incandescent lamps, resistive loads, and non-PWM'd inductive loads (e.g., solenoids, relays) in either high- or low-side configuration. For PWM operation, only outputs 5–6 accept external IN5/IN6 signals-and only with non-inductive loads per datasheet restriction.

How does open-load detection work in off-state?

During off-state, internal current sources apply ±10 µA to SRC and DRN pins of outputs 1–6. Voltage measurement across the pair identifies open circuits: high impedance indicates disconnection, triggering a latched fault bit readable via SPI.

Can L9848TR drive a bipolar stepper motor without external H-bridge transistors?

Yes-outputs 1–4 can be paired as complementary high/low-side legs to form a full H-bridge. The IC provides matched slew rates, current limiting, and fault reporting per phase, eliminating discrete transistors for 24 V, ≤0.8 A stepper applications.

Is reverse-battery protection active on all pins?

Reverse-battery tolerance (−13.5 V) applies specifically to SRC1–SRC6 and DRN1–DRN6 pins. VDD, GND, and SPI pins follow standard absolute maximum ratings (−0.3 V) and require external protection if exposed to reversed polarity.

L9848TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 8

Ratio - Input:Output:: 1:8

Output Configuration:: High Side or Low Side

Output Type:: -

Interface:: SPI

Voltage - Load:: 4.75V ~ 5.25V

Voltage - Supply (Vcc/Vdd):: -

Current - Output (Max):: 800mA

Rds On (Typ):: 1.5Ohm (Max)

Input Type:: -

Features:: PWM Input

Fault Protection:: Current Limiting (Fixed), Open Load Detect, Over Temperature

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-SO

L9848TR FAQ

1.How can I place an order for L9848TR through Aetrix?

Please submit a Request for Quotation (RFQ) for L9848TR 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 L9848TR reliable?

The price and inventory of L9848TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9848TR is usually 5 days.

3.What payment methods are accepted for L9848TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9848TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L9848TR?

L9848TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L9848TR 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 L9848TR?

For technical support, including L9848TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9848TR requirements.

6.How does Aetrix verify that L9848TR is sourced from the original manufacturer or authorized distributors?

All L9848TR 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 L9848TR meets industry standards.

7.What is the process for return or replacement of L9848TR?

All L9848TR units undergo pre-shipment inspection (PSI). If there is an issue with L9848TR, 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 L9848TR part is unused and in its original packaging.

Return procedure for L9848TR:

1.Submit a request within 90 days.

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

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