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 L9953XP

Name: L9953XP
Brand: STMicroelectronics
SKU: L9953XP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: L9953XP

Manufacturer:: STMicroelectronics

Category:: Power Management - Specialized

Package:: PowerSSO-36 Exposed Bottom Pad

Datasheet:: L9953XP.pdf

Description:: IC DVR DOOR ACTUATOR POWERSSO-36

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,155

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

Product details

Overview

L9953XP from STMicroelectronics is an automotive-grade multifunctional door actuator driver IC integrating five half-bridge outputs (OUT1–OUT5), three high-side drivers (OUT6–OUT8), SPI interface, current monitoring, and programmable softstart. It delivers 6A full-bridge drive (OUT4/OUT5, R_ON = 150 mΩ typ), 1.5A half-bridge drive (OUT1–OUT3, R_ON = 800 mΩ typ), and 6A high-side drive (OUT8, R_ON = 100 mΩ typ), targeting door lock, mirror fold/vertical/horizontal control, and defroster/lighting functions in vehicle body electronics.

For engineers reviewing the L9953XP datasheet, L9953XP pinout, L9953XP application, or L9953XP equivalent, this page provides verified technical context, SPI-controlled output configuration, diagnostic coverage (open-load, overload, overtemperature), reverse-polarity protection via charge pump, and PowerSSO-36 package implementation details for automotive ECU integration.

Technical Context

The L9953XP implements a microcontroller-driven architecture with a 24-bit SPI interface enabling precise control of forward/reverse/brake/high-Z states across all eight outputs. Diagnostic status-including open-load, overload, thermal warning (T_j = 130 °C), and thermal shutdown (T_j = 170 °C)-is reported back via SPI status registers.

It features dual power domains: VS (7–28 V) powers all output stages and includes overvoltage (18–24.5 V) and undervoltage (5.7–7.2 V) detection, while VCC (4.5–5.3 V) supplies logic and SPI circuitry. The integrated charge pump (V_CP = VS + 6 to VS + 13 V) drives external N-MOSFETs for reverse polarity protection.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Configuration	5 half-bridges (OUT1–OUT5) + 3 high-side drivers (OUT6–OUT8); supports up to 3 DC motors and 3 resistive loads
Max Output Current	±10.5 A sink/source on OUT4/OUT5 (full-bridge); ±3 A on OUT1–OUT3 (half-bridge); −6 A on OUT8 (high-side)
R_ON (Typ @ 25°C)	150 mΩ (OUT4/OUT5), 800 mΩ (OUT1–OUT3), 100 mΩ (OUT8) - enables low conduction loss at rated load
Standby Current	<6 µA (I_S, T_j ≤ 85 °C) - minimizes battery drain during vehicle sleep mode
Diagnostic Coverage	Open-load, overload, overtemperature (130 °C warning / 170 °C shutdown), short-circuit, and current monitor on OUT1/OUT4/OUT5/OUT8
SPI Interface	24-bit serial peripheral interface with CSN/CLK/DI/DO; supports real-time command input and fault reporting
Softstart Programmability	Configurable ramp time to limit inrush current during motor startup - critical for mirror fold and door lock actuation

Pinout & Package

Package: PowerSSO-36 - thermally enhanced surface-mount package with exposed die pad for automotive under-hood thermal management (R_thJA = 30 K/W typical).

Pin/Terminal	Circuit Role	Design Meaning
GND (Pins 1, 18, 19, 36)	Ground reference	All four pins must be externally connected to ensure full-current capability and thermal stability
VS (Pins 6, 7, 14, 15, 23, 25, 28, 32)	Main power supply input	7–28 V supply for output stages; all 8 pins require low-impedance connection to minimize voltage drop and heating
OUT1–OUT5 (Pins 3, 4, 5, 16, 17, 20, 21, 24)	Half-bridge outputs	OUT1–OUT3: bidirectional motor control; OUT4/OUT5: 6A full-bridge for high-power actuators (e.g., door lock)
OUT6–OUT8 (Pins 22, 30, 35)	High-side drivers	OUT6/OUT7: 1.5A resistive loads (mirror defroster); OUT8: 6A high-side for 10W bulbs or auxiliary heating
CSN, CLK, DI, DO (Pins 10, 13, 8, 11)	SPI interface	CMOS-level serial control bus; DO is tristate when CSN high - enables daisy-chaining or shared bus operation
CP (Pin 26)	Charge pump output	Drives gate of external N-MOSFET for reverse polarity protection - eliminates need for bulky series diode
PWM1 (Pin 27)	External PWM input	Direct analog control of OUT1–OUT6 and OUT8; bypasses SPI for time-critical actuation (e.g., emergency lock)

Key Features

Feature	Design Value
Programmable softstart	Adjustable current ramp prevents fuse blowing and contact arcing during high-inrush motor startup (e.g., cold mirror fold)
Current monitor outputs	1/10,000 proportional current sensing on OUT1/OUT4/OUT5/OUT8 - enables closed-loop torque estimation without shunt resistors
Integrated diagnostics	Real-time open-load, overload, and thermal fault reporting via SPI status register - reduces need for external monitoring circuitry
Dual-supply architecture	Independent VS (power) and VCC (logic) rails - allows safe operation during battery transients (ISO 7637-2 Pulse 1/2a/5a)
Reverse polarity protection support	On-chip charge pump (V_CP = VS + 6 to VS + 13 V) drives external N-MOSFET - achieves <100 mΩ protection path vs. >300 mΩ Schottky solution

Applications

Door Lock Actuation

Mirror Fold Control

Use Scenario: Electrically actuated central locking system requiring bidirectional 6A peak current for solenoid engagement and release.

IC Role / Device Role / Timing Role: L9953XP configures OUT4/OUT5 as full-bridge to drive lock/unlock solenoids with PWM-controlled softstart and open-load detection.

Use Value: Eliminates discrete H-bridge + sense + protection components; reduces BOM count by ≥7 parts per door.

Use Scenario: Power-folding side mirrors requiring synchronized 1.5A bidirectional motion with stall detection.

IC Role / Device Role / Timing Role: OUT1–OUT3 operate as independent half-bridges controlling vertical/horizontal/fold axes; current monitor detects mechanical jam.

Use Value: Integrated overload diagnosis replaces external current-sense amplifier and comparator - cuts PCB area by 28 mm².

Mirror Defroster Drive

Interior Light Control

Use Scenario: 10W resistive heating element on mirror glass requiring precise 6A high-side switching with thermal derating.

IC Role / Device Role / Timing Role: OUT8 operates as protected high-side driver with overtemperature shutdown (170 °C) and current monitor feedback.

Use Value: Single-chip solution replaces discrete high-side switch + thermal sensor + fault logic - improves reliability in humid environments.

Use Scenario: Dual 10W dome/map lights requiring independent 1.5A high-side control with PWM dimming and short-circuit immunity.

IC Role / Device Role / Timing Role: OUT6/OUT7 serve as isolated high-side drivers; SPI enables individual on/off/dim commands and open-load reporting.

Use Value: Enables software-configurable lighting profiles (e.g., fade-on entry) without adding MCU GPIOs or external drivers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE9201SE	4-channel high-side driver only; no half-bridges or SPI diagnostics; R_ON = 120 mΩ @ 6A	Lacks integrated motor control - requires external H-bridges for lock/fold functions	Select when only high-side resistive loads (defroster/lights) are needed and diagnostics are handled externally
VNQ7E100AJ	8-channel high-side driver with embedded current sense; no half-bridge capability; R_ON = 100 mΩ @ 6A	Cannot drive bidirectional DC motors - unsuitable for mirror axis or door lock actuation	Prefer for pure lighting/heating modules where bidirectional control is unnecessary

Compared with TLE9201SE and VNQ7E100AJ, the L9953XP uniquely integrates half-bridge motor control, SPI-based diagnostics, and programmable softstart in one package - making it the only single-chip solution for full door module integration including lock, fold, and defrost functions.

Availability

L9953XP is available at Aetrix Electronics and suitable for automotive body control modules, door module assemblies, and mirror actuation systems requiring stable component supply across extended temperature ranges (−40 °C to 150 °C junction).

Supply support for L9953XP 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, power, and microcontroller solutions with ISO/TS 16949-certified manufacturing.

The L9953XP belongs to ST's automotive Smart Power family, designed specifically for intelligent body electronics actuation - emphasizing functional safety (ASIL-B ready), diagnostic completeness, and robustness against automotive electrical transients.

FAQ

What is the maximum junction temperature and thermal protection behavior of the L9953XP?

The L9953XP triggers thermal warning at 130 °C and enters hard thermal shutdown at 170 °C (rising). Shutdown releases at 150 °C (falling), providing 20 °C hysteresis. All outputs are disabled during shutdown, and fault status is reported via SPI bit 0. This protects against sustained overload in confined door cavities where airflow is limited.

How does the current monitor function work, and which outputs support it?

The current monitor provides a 1:10,000 scaled replica of instantaneous load current on OUT1, OUT4, OUT5, and OUT8. V_CM outputs 0–4 V corresponding to 0–6 A (full scale = 600 µA), with ±8% accuracy. It is unidirectional - only reflects sourcing current - and shares the CM/PWM2 pin, which becomes PWM2 input when multiplexer bits are set accordingly.

Can the L9953XP drive inductive loads like DC motors without external freewheeling components?

Yes - each half-bridge (OUT1–OUT5) integrates parasitic bulk-drain diodes (high-side to VS, low-side to GND) that provide intrinsic freewheeling paths. High-side outputs (OUT6–OUT8) lack internal GND-referenced diodes but include ESD diodes to GND with limited energy handling; external flyback diodes are recommended for sustained inductive kickback in mirror fold applications.

What is the role of the CP (charge pump) pin, and how is it used in reverse polarity protection?

The CP pin delivers a regulated voltage (VS + 6 to VS + 13 V) to drive the gate of an external N-channel MOSFET placed between battery and VS input. This creates a low-R_DS(on) reverse-polarity protection path (<100 mΩ), replacing lossy series diodes. The charge pump remains active in standby mode, ensuring protection persists during vehicle sleep.

L9953XP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: PowerSSO-36 Exposed Bottom Pad

Packaging:: Tube

Product Status:: Active

Applications:: Door Actuator

Current - Supply:: 7mA

Voltage - Supply:: 7V ~ 28V

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36

L9953XP FAQ

1.How can I place an order for L9953XP through Aetrix?

Please submit a Request for Quotation (RFQ) for L9953XP 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 L9953XP reliable?

The price and inventory of L9953XP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for L9953XP is usually 5 days.

3.What payment methods are accepted for L9953XP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for L9953XP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for L9953XP?

L9953XP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your L9953XP 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 L9953XP?

For technical support, including L9953XP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your L9953XP requirements.

6.How does Aetrix verify that L9953XP is sourced from the original manufacturer or authorized distributors?

All L9953XP 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 L9953XP meets industry standards.

7.What is the process for return or replacement of L9953XP?

All L9953XP units undergo pre-shipment inspection (PSI). If there is an issue with L9953XP, 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 L9953XP part is unused and in its original packaging.

Return procedure for L9953XP:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 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…

2026-09-02 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…