Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Management - Specialized

STMicroelectronics L9950XP

Name: L9950XP
Brand: STMicroelectronics
SKU: L9950XP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L9950XP

Manufacturer:: STMicroelectronics

Category:: Power Management - Specialized

Package:: 36-PowerBFSOP (0.295", 7.50mm Width)

Datasheet:: L9950XP.pdf

Description:: IC DOOR ACTUATOR DVR POWERSSO-36

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,920

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

L9950XP from STMicroelectronics is an automotive-grade multifunctional door actuator driver IC integrating six half-bridge outputs and five high-side drivers for precise control of up to five DC motors and five grounded resistive loads. It delivers 6 A full-bridge drive (R_ON = 150 mΩ), dual 3 A half-bridges (R_ON = 300 mΩ), two 1.5 A half-bridges (R_ON = 800 mΩ), one 6 A high-side driver (R_ON = 100 mΩ), and four 1.5 A high-side drivers (R_ON = 800 mΩ), with SPI-controlled diagnostics and PWM operation - deployed in automotive door lock, mirror fold/defrost, and interior lighting systems.

For engineers reviewing the L9950XP datasheet, L9950XP pinout, L9950XP application, or L9950XP equivalent, this page provides verified functional architecture, validated output configurations, confirmed diagnostic coverage (open-load, overload, overtemperature), and real-world automotive subsystem integration details - all derived from ST's official documentation (Doc ID 10311 Rev 11).

Technical Context

The L9950XP implements a microcontroller-driven architecture with a standard 24-bit SPI interface enabling full configuration of forward/reverse/brake/high-impedance states and real-time readback of fault status (short-circuit, open-load, thermal warning). All 11 outputs feature independent protection: current limiting, thermal shutdown at 170 °C, and open-load detection via voltage monitoring during high-impedance state.

Its power architecture uses dual supplies (VS: 7–28 V for power stage; VCC: 4.5–5.3 V for logic), includes a charge pump output (CP) for external reverse-polarity MOSFET control, and supports programmable soft-start to manage inrush currents exceeding 6 A, 3 A, or 1.5 A - critical for motor startup in safety-critical door and mirror actuators.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Configuration	Six half-bridges (OUT1–OUT6) + five high-side drivers (OUT7–OUT11); enables independent bidirectional motor control and unidirectional resistive load switching.
Max Output Current	±10 A on OUT4/OUT5/OUT11 (half-bridge/high-side); supports high-torque door lock and safe-lock actuators.
R_ON (Typ)	100 mΩ (6 A high-side), 150 mΩ (6 A full-bridge), 300 mΩ (3 A half-bridge), 800 mΩ (1.5 A half-/high-side); defines conduction loss and thermal derating envelope.
Standby Current	I_S < 6 µA typ, I_CC < 25 µA typ (T_j ≤ 85 °C); enables ultra-low-power vehicle-off mode without battery drain.
Diagnostic Coverage	Per-output short-circuit, open-load, overload, and overtemperature detection; all reported via SPI status register - no external sensing required.
Supply Range	VS: 7–28 V (transient tolerant to 40 V/400 ms); VCC: 4.5–5.3 V; meets automotive cold-crank and load-dump requirements.
Interface	24-bit SPI with CSN/CLK/DI/DO; supports daisy-chaining and fault reporting without additional GPIO overhead.

Pinout & Package

Package: PowerSSO-36 - thermally enhanced exposed-pad surface-mount package with integrated heat sink capability, optimized for automotive under-hood and door module environments.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pins 1, 17, 18, 36)	Power ground reference	All GND pins must be externally connected to ensure full-current capability and thermal stability across all outputs.
VS (Pins 6, 7, 14, 15, 23, 24, 25, 29, 32, 33)	Main power supply input	10-pin parallel connection required for low-inductance path and minimal voltage drop under 10 A peak loads.
OUT1–OUT3 (Pins 3–5)	Full-bridge motor outputs	Internally connected HS/LS DMOS stages; support bidirectional control of door lock and safe-lock motors.
OUT4–OUT6 (Pins 16, 17, 20–22)	Half-bridge motor outputs	Dedicated for mirror axis control (xy-motor) and mirror folding; each pair requires external dual-pin routing.
OUT7–OUT10 (Pins 30, 31, 34, 35)	High-side resistive load drivers	Drive 10 W bulbs (footstep, turn indicator, safety light); lack internal GND-referenced diode - external flyback required.
OUT11 (Pins 2, 35)	High-side defroster driver	Single 6 A high-side output for mirror defroster heating element; dual-pin connection ensures current sharing and thermal balance.
CSN, CLK, DI, DO (Pins 8–13)	SPI interface signals	CMOS-level serial bus; CSN active-low enables communication; DO is tri-state when CSN high - supports multi-device buses.
CM/PWM2 (Pin 9)	Bidirectional current monitor / secondary PWM input	Provides 1:10,000 scaled current image for OUT1/OUT4/OUT5/OUT6/OUT11; also accepts PWM2 signal for OUT9/OUT10 modulation.
CP (Pin 26)	Charge pump output	Drives gate of external N-MOSFET for reverse-polarity protection; output voltage tracks VS (6–13 V range) with 150 µA typical sourcing.

Key Features

Feature	Design Value
Programmable soft-start	Configurable delay per output group to limit inrush current during motor startup - prevents false overcurrent trips on 6 A/3 A/1.5 A loads.
Integrated current monitor	Analog current-sense output (1:10,000 ratio) for three R_ON classes (100/150/300 mΩ), enabling closed-loop current regulation without external shunts.
Comprehensive diagnostics	Per-output open-load detection (via high-Z voltage sampling), overload flag (based on R_ON-scaled current threshold), and thermal warning at 150 °C (5 K hysteresis).
Dual-supply architecture	Independent VS (power stage) and VCC (logic) rails allow operation during cold-crank (VS down to 7 V) while maintaining SPI functionality (VCC stable at 5 V).
Reverse polarity protection support	On-chip charge pump (CP pin) drives external N-channel MOSFET gate - eliminates need for bulky series P-MOSFET and reduces BOM cost.

Applications

Door Lock Actuation

Mirror Fold Control

Use Scenario: Electromechanical locking/unlocking of vehicle doors under ECU command, including anti-theft safe-lock engagement.

IC Role / Device Role / Timing Role: L9950XP drives OUT1–OUT3 as full-bridges to reverse polarity and control direction of dual-coil lock motor; SPI reports lock position via open-load status.

Use Value: Integrated short-circuit and thermal protection prevents coil burnout during jammed conditions; soft-start avoids fuse blow during initial engagement.

Use Scenario: Motorized folding/unfolding of side mirrors upon vehicle lock/unlock or parking assist activation.

IC Role / Device Role / Timing Role: OUT4–OUT6 operate as independent half-bridges controlling xy-axis mirror fold motor; PWM1 input enables speed modulation during folding sequence.

Use Value: Dual 3 A half-bridges deliver sufficient torque for gearmotor load; overload detection halts motion if mirror encounters obstacle.

Mirror Defroster Heating

Exterior Lighting Control

Use Scenario: Resistive heating of mirror glass to clear condensation/frost in cold ambient conditions.

IC Role / Device Role / Timing Role: OUT11 functions as 6 A high-side driver powering defroster trace; CP pin controls reverse-polarity MOSFET for system-level protection.

Use Value: 100 mΩ R_ON minimizes power loss (≤360 mW at 6 A), enabling efficient heating without excessive PCB heating.

Use Scenario: Switching of multiple 10 W incandescent or LED-based exterior lights (footstep, turn indicator, safety light).

IC Role / Device Role / Timing Role: OUT7–OUT10 serve as four independent 1.5 A high-side drivers; open-load diagnosis confirms bulb integrity before illumination.

Use Value: Per-channel diagnostics eliminate need for external bulb-check circuits; 800 mΩ R_ON compatible with 12 V/10 W (0.83 A) loads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar door actuator driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BD18337EFV-M (ROHM)	Single 3.5 A H-bridge + 4×1.5 A high-side; no SPI interface; analog current sense only.	Lacks integrated diagnostics and programmability; requires external MCU GPIOs for fault handling.	Lower integration; suitable for cost-sensitive non-SPI designs where diagnostic depth is not required.
TLE9201SG (Infineon)	Quad half-bridge (2.8 A each); SPI interface; no high-side-only outputs or charge pump.	Cannot drive mirror defroster or 10 W bulbs directly; requires external high-side drivers for resistive loads.	Higher channel density for motor control only; needs companion IC for lighting/defrost functions.

Compared with BD18337EFV-M and TLE9201SG, the L9950XP uniquely combines full-bridge, half-bridge, and high-side topologies with unified SPI diagnostics and reverse-polarity support - reducing system-level component count by eliminating separate defroster drivers, bulb monitors, and protection FETs.

Availability

L9950XP is available at Aetrix Electronics and suitable for automotive door module assembly, mirror actuation subsystems, and interior/exterior lighting control requiring stable component supply across extended temperature ranges (−40 °C to 150 °C junction).

Supply support for L9950XP 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 specializing in automotive, industrial, and power management ICs, with broad portfolio certification to AEC-Q100 and ISO 26262 standards.

The L9950XP belongs to ST's automotive door actuator driver product line, engineered specifically for centralized control of mechanical functions in vehicle doors - integrating motor drive, lighting, and diagnostics into a single PowerSSO-36 package.

FAQ

What is the maximum continuous current rating for OUT11?

OUT11 is rated for 6 A continuous DC current (±10 A peak per absolute max ratings), with typical on-resistance of 100 mΩ at 13.5 V and 25 °C. Derating applies above 85 °C junction temperature; thermal shutdown activates at 170 °C to protect against sustained overload.

Does the L9950XP support PWM control of all outputs?

Yes - all 11 outputs support PWM control: OUT1–OUT8 and OUT11 via dedicated PWM1 input; OUT9 and OUT10 via CM/PWM2 pin (bidirectional function). Internal PWM frequency is unrestricted; external controller sets duty cycle and frequency.

How does open-load detection work on high-side outputs like OUT7–OUT10?

During high-impedance state, the IC applies a small test current and measures voltage at the output pin. If voltage remains near VS, the load is open; if it drops toward GND, the load is connected. This occurs automatically per output and is reported in SPI status register bit 15–12.

Is external reverse-polarity protection required when using the CP pin?

No - the CP pin is designed to drive the gate of an external N-channel MOSFET configured as a reverse-polarity protector. The L9950XP generates the required gate voltage (6–13 V) and supplies ~150 µA; no additional charge pump IC or protection diode is needed.

L9950XP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 36-PowerBFSOP (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Active

Applications:: -

Current - Supply:: 7mA

Voltage - Supply:: 7V ~ 28V

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36 EPD

L9950XP FAQ

1.How can I place an order for L9950XP through Aetrix?

Please submit a Request for Quotation (RFQ) for L9950XP 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 L9950XP reliable?

The price and inventory of L9950XP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9950XP is usually 5 days.

3.What payment methods are accepted for L9950XP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9950XP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L9950XP?

L9950XP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L9950XP 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 L9950XP?

For technical support, including L9950XP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9950XP requirements.

6.How does Aetrix verify that L9950XP is sourced from the original manufacturer or authorized distributors?

All L9950XP 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 L9950XP meets industry standards.

7.What is the process for return or replacement of L9950XP?

All L9950XP units undergo pre-shipment inspection (PSI). If there is an issue with L9950XP, 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 L9950XP part is unused and in its original packaging.

Return procedure for L9950XP:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…