L9952 - Automotive Solenoid Driver | STMicroelectronics | Power Management
Référence : L9952 ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $4.85 | $4,85 |
| 10 | $4.36 | $43,60 |
| 100 | $3.88 | $388,00 |
| 500 | $3.49 | $1 745,00 |
| 1 000 | $3.1 | $3 100,00 |
L9952 Présentation
A solenoid driver is a power management IC that controls the current through an inductive load such as a solenoid or relay coil. It typically includes output stages, protection features, and diagnostic functions. In automotive systems, solenoid drivers are essential for controlling fuel injectors, transmission solenoids, and other electromechanical actuators. The L9952 belongs to the family of automotive power ICs, which are designed to meet stringent reliability and safety standards.
Key features of the L9952 include a continuous output current of up to 5A, a low saturation voltage of 1.5V at 5A, and a standby current of only 10µA. It incorporates overcurrent, overtemperature, and short-circuit protection, along with a diagnostic output for fault reporting. The device is AEC-Q100 qualified, ensuring its suitability for automotive environments. The PowerSO-20 package has a thermal resistance of 35°C/W, allowing efficient heat dissipation.
The L9952 uses a smart power technology that integrates control logic and power stages on a single chip. This reduces external component count and improves system reliability. The device features a serial peripheral interface (SPI) for communication with a microcontroller, enabling precise control and diagnostics. The SPI interface supports daisy-chaining of multiple devices, simplifying wiring in multi-channel systems.
Typical applications include automotive transmission control units, engine management systems, and body control modules. The L9952 is also used in industrial automation for controlling solenoids and relays. Its wide supply voltage range and robust protection make it ideal for harsh environments.
When designing with the L9952, it is important to consider the inductive load's flyback voltage. An external freewheeling diode or internal clamping circuitry is required to protect the device. Additionally, proper PCB layout with adequate copper area for heat dissipation is essential for reliable operation at high currents.
Alternatives de remplacement direct pour L9952 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
L9952GXP
⚡ Même boîtier📋 Alternative de référence (hors catalogue)
L9952XP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
L9952GXPTR
⚡ Même boîtier📋 Alternative de référence (hors catalogue)
L9952 Valeurs maximales et caractéristiques électriques
| Supply Voltage Range | 4.5 V to 28 V |
| Continuous Output Current | 5 A |
| Saturation Voltage | 1.5 V at 5 A |
| Standby Current | 10 µA |
| Boîtier | PowerSO-20 |
| Résistance thermique | 35 °C/W |
| Température de fonctionnement | -40°C to +150°C |
| AEC-Q100 Qualification | Qualified |
| Interface | SPI |
| Protection Features | Overcurrent, Overtemperature, Short-circuit |
| Diagnostic Output | Yes |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Configuration de sortie | High-side, Low-side, H-bridge |
| Application | Automotive Solenoid and Relay Driving |
Configuration des broches de L9952
| Broche 1 | VCC — Power supply input |
| Broche 2 | GND — Ground |
| Broche 3 | OUT1 — High-side driver output |
| Broche 4 | OUT2 — Low-side driver output |
| Broche 5 | OUT3 — H-bridge output |
| Broche 6 | OUT4 — H-bridge output |
| Broche 7 | SPI_CLK — SPI clock input |
| Broche 8 | SPI_CS — SPI chip select |
| Broche 9 | SPI_MOSI — SPI data input |
| Broche 10 | SPI_MISO — SPI data output |
| Broche 11 | DIAG — Diagnostic output |
| Broche 12 | EN — Enable input |
Applications typiques
L9952 convient pour 6 applications: Automotive Transmission Control Units, Engine Management Systems, Body Control Modules, Industrial Automation, Fuel Injection Systems, Relay Driving.
Automotive Transmission Control Units
The L9952 is used in automotive transmission control units to drive solenoids that control gear shifting. Its high output current of 5A and robust protection features ensure reliable operation in harsh automotive environments. The SPI interface allows precise control and diagnostics, enabling efficient transmission management. The wide supply voltage range of 4.5V to 28V accommodates both 12V and 24V systems, making it versatile for various vehicle platforms.
Recommandé
Engine Management Systems
In engine management systems, the L9952 drives fuel injectors and other solenoids. Its low saturation voltage of 1.5V at 5A minimizes power dissipation, improving system efficiency. The overcurrent and overtemperature protection prevent damage to the IC and the load. The AEC-Q100 qualification ensures reliability in the demanding conditions of an engine compartment, where temperatures can exceed 100°C.
Recommandé
Body Control Modules
The L9952 is used in body control modules to drive relays and solenoids for functions like door locks, window lifts, and lighting. Its standby current of 10µA is crucial for minimizing battery drain when the vehicle is off. The SPI interface enables centralized control and diagnostics, simplifying the wiring harness. The PowerSO-20 package with 35°C/W thermal resistance ensures efficient heat dissipation in the confined space of a body control module.
Recommandé
Industrial Automation
In industrial automation, the L9952 controls solenoids and relays in machinery and process control systems. Its wide supply voltage range of 4.5V to 28V makes it compatible with various industrial power supplies. The robust protection features, including overcurrent and short-circuit protection, ensure reliable operation in industrial environments. The SPI interface allows integration with PLCs and other control systems, enabling precise actuation and monitoring.
Recommandé
Fuel Injection Systems
The L9952 is used in fuel injection systems to drive fuel injector solenoids. Its high output current of 5A ensures fast and precise fuel delivery, improving engine performance and fuel efficiency. The low saturation voltage of 1.5V at 5A reduces power loss, while the diagnostic output provides real-time fault detection. The AEC-Q100 qualification guarantees reliability in the harsh conditions of an engine bay.
Recommandé
Relay Driving
The L9952 is used to drive relays in various automotive and industrial applications. Its high-side and low-side driver configuration allows flexible control of relay coils. The built-in protection features, including overcurrent and overtemperature, safeguard the IC and the relay. The SPI interface enables remote control and diagnostics, making it ideal for smart relay modules in modern vehicles.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour L9952 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | L9952GXP | L9952XP | L9952GXPTR |
|---|---|---|---|---|
| Package | PowerSO-20 | PowerSO-36 | PowerSO-20 | PowerSO-36 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
Principaux différenciateurs
- High output current of 5A (vs L9952GXP)
- Low standby current of 10µA (vs L9952XP)
- AEC-Q100 qualified (vs L9952GXPTR)
Notes de conception
The L9952 operates from a supply voltage range of 4.5V to 28V. Ensure the input supply is properly decoupled with a capacitor close to the VCC pin to handle transient currents. For high-current applications, use a bulk capacitor to maintain stable voltage during load switching.
The PowerSO-20 package has a thermal resistance of 35°C/W. At 5A output with a saturation voltage of 1.5V, power dissipation is 7.5W, resulting in a temperature rise of 262.5°C above ambient. A heatsink or substantial copper pour is required for reliable operation at high currents.
Place the freewheeling diode or clamping circuitry close to the inductive load to minimize flyback voltage spikes. Use wide traces for high-current paths and ensure adequate copper area for heat dissipation. Follow the layout guidelines in the STMicroelectronics datasheet for optimal performance.
Informations de conformité
RoHS compliant per STMicroelectronics product page. AEC-Q100 qualified for automotive applications.
