Voltage regulator with ignition comparator, reset, overcurrent protection and 3.3V regulator with independent enable The part **L5956** is manufactured by **STMicroelectronics (ST)**. Below are the specifications, descriptions, and features based on the available knowledge:  

### **Specifications:**  
- **Type:** Automotive power supply voltage regulator  
- **Output Voltage:** Adjustable or fixed (depending on variant)  
- **Output Current:** Up to 1.5A (typical)  
- **Input Voltage Range:** 4.5V to 36V  
- **Dropout Voltage:** Low dropout (LDO) characteristics  
- **Protection Features:** Overcurrent protection, thermal shutdown, reverse polarity protection  
- **Operating Temperature Range:** -40°C to +125°C (automotive-grade)  
- **Package:** Typically available in **TO-220** or **PowerSO-10**  

### **Description:**  
The **L5956** is a high-performance voltage regulator designed for automotive applications. It provides stable power supply output with robust protection mechanisms, making it suitable for harsh environments.  

### **Features:**  
- **Wide Input Voltage Range:** Supports operation from 4.5V to 36V.  
- **High Output Current:** Capable of delivering up to 1.5A.  
- **Low Dropout Voltage:** Ensures efficient regulation even with small voltage differences.  
- **Built-in Protections:** Includes overcurrent, thermal shutdown, and reverse polarity protection.  
- **Automotive Compliance:** Meets AEC-Q100 standards for reliability in automotive systems.  
- **Adjustable/Fixed Output:** Some variants allow adjustable output voltage via external resistors.  

For exact variant-specific details, refer to the official **STMicroelectronics datasheet**.

Voltage regulator with ignition comparator, reset, overcurrent protection and 3.3V regulator with independent enable

Voltage regulator with ignition comparator, reset, overcurrent protection and 3.3V regulator with independent enable **Manufacturer Specifications for Part L5956:**  
- **Input Voltage Range:** 4.5V to 36V  
- **Output Voltage Range:** Adjustable from 1.2V to 33V  
- **Output Current:** Up to 2.5A  
- **Switching Frequency:** 500kHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Overcurrent, Overtemperature, Undervoltage Lockout (UVLO)  
- **Package Type:** PowerSO-20  

**Descriptions:**  
The L5956 is a step-down (buck) switching regulator IC designed for high-efficiency DC-DC conversion. It integrates a power MOSFET and control circuitry, making it suitable for a wide range of applications, including automotive, industrial, and consumer electronics.  

**Features:**  
- **Wide Input Voltage Range:** Supports operation from 4.5V to 36V.  
- **Adjustable Output Voltage:** Configurable via external resistors.  
- **High Efficiency:** Optimized for minimal power loss.  
- **Integrated Power MOSFET:** Simplifies design and reduces external component count.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Synchronization Capability:** Allows external clock synchronization for noise-sensitive applications.

Voltage regulator with ignition comparator, reset, overcurrent protection and 3.3V regulator with independent enable