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L9947S from ST,ST Microelectronics

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L9947S

Manufacturer: ST

QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER

Partnumber Manufacturer Quantity Availability
L9947S ST 1500 In Stock

Description and Introduction

QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER Here are the factual details about part **L9947S** from the manufacturer **STMicroelectronics**:

### **Manufacturer:**  
STMicroelectronics (ST)  

### **Specifications:**  
- **Type:** Dual H-Bridge Motor Driver IC  
- **Operating Voltage Range:** 4.5V to 28V  
- **Output Current (per channel):** Up to 1.5A (continuous)  
- **Peak Output Current (per channel):** Up to 3.5A  
- **RDS(ON) (per MOSFET):** 0.45Ω (typical)  
- **Control Interface:** Parallel or SPI (Serial Peripheral Interface)  
- **Protection Features:**  
  - Overcurrent protection  
  - Thermal shutdown  
  - Undervoltage lockout (UVLO)  
  - Cross-conduction prevention  

### **Descriptions:**  
The **L9947S** is a dual H-bridge motor driver IC designed for driving DC motors, stepper motors, or other inductive loads. It integrates two full H-bridges with low RDS(ON) MOSFETs, enabling efficient bidirectional control of two motors or a single bipolar stepper motor. The device supports both parallel and SPI control modes, offering flexibility in system design.  

### **Features:**  
- Dual independent H-bridge drivers  
- Supports **PWM control** for speed regulation  
- **SPI interface** for advanced diagnostics and configuration  
- **Low-power standby mode**  
- **Integrated protection circuits** (thermal shutdown, overcurrent, UVLO)  
- **Compact package:** PowerSSO-36  

This information is based on the official STMicroelectronics datasheet for the **L9947S**. For detailed electrical characteristics and application notes, refer to the manufacturer's documentation.

Application Scenarios & Design Considerations

QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER
Partnumber Manufacturer Quantity Availability
L9947S ST 162 In Stock

Description and Introduction

QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER The part **L9947S** is manufactured by **STMicroelectronics (ST)**.  

### **Specifications:**  
- **Type:** Automotive dual H-bridge motor driver  
- **Operating Voltage:** 4.5V to 28V  
- **Output Current:** Up to 1.5A per channel (3A peak)  
- **Number of Channels:** 2 (Dual H-bridge)  
- **Control Interface:** SPI (Serial Peripheral Interface)  
- **Protection Features:** Overcurrent, overtemperature, undervoltage lockout  
- **Package:** PowerSSO-24  

### **Descriptions:**  
The **L9947S** is a dual H-bridge motor driver designed for automotive applications. It provides bidirectional control for two DC motors or a single stepper motor. The device includes an SPI interface for configuration and diagnostics, making it suitable for advanced motor control systems.  

### **Features:**  
- Dual H-bridge configuration  
- SPI-programmable parameters  
- Integrated protection circuits  
- Low standby current consumption  
- PWM capability for speed control  
- Automotive-grade reliability (AEC-Q100 qualified)  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

QUAD HALF-BRIDGE AND SINGLE HIGH-SIDE DRIVER

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