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LM5035MH from NSC,National Semiconductor

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LM5035MH

Manufacturer: NSC

PWM Controller with Integrated Half-Bridge and SyncFET Drivers

Partnumber Manufacturer Quantity Availability
LM5035MH NSC 32 In Stock

Description and Introduction

PWM Controller with Integrated Half-Bridge and SyncFET Drivers The LM5035MH is a high-voltage PWM controller manufactured by National Semiconductor (NSC).  

**Specifications:**  
- Input Voltage Range: 15V to 100V  
- Output Voltage: Adjustable  
- Switching Frequency: Up to 1MHz  
- Duty Cycle: Up to 50%  
- Operating Temperature Range: -40°C to +125°C  
- Package: 20-Pin HTSSOP  

**Descriptions:**  
The LM5035MH is designed for high-voltage DC-DC converter applications. It integrates a high-voltage start-up regulator, PWM controller, and gate driver. It supports half-bridge and full-bridge topologies.  

**Features:**  
- High-voltage start-up regulator (up to 100V)  
- Programmable oscillator frequency  
- Adaptive dead-time control  
- Cycle-by-cycle current limiting  
- Soft-start functionality  
- Under-voltage lockout (UVLO)  
- Thermal shutdown protection  

The device is suitable for telecom, industrial, and automotive power supply applications.

Partnumber Manufacturer Quantity Availability
LM5035MH NS 184 In Stock

Description and Introduction

PWM Controller with Integrated Half-Bridge and SyncFET Drivers The LM5035MH is a high-voltage pulse width modulation (PWM) controller manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 15V to 100V  
- **Output Voltage:** Adjustable via external components  
- **Switching Frequency:** Adjustable up to 1MHz  
- **Duty Cycle Range:** Up to 50% (for push-pull topology)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 20-pin HTSSOP (PowerPAD™)  
- **Control Method:** Voltage-mode PWM  
- **Gate Drive Output Current:** 1.5A (peak)  

### **Descriptions:**  
The LM5035MH is designed for high-voltage DC-DC converter applications, including isolated power supplies. It integrates a high-voltage start-up regulator, eliminating the need for an external bias supply. The controller supports multiple topologies such as push-pull, half-bridge, and full-bridge configurations.  

### **Features:**  
- **Integrated High-Voltage Start-Up Regulator:** Operates directly from a high-voltage input (up to 100V).  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Cycle-by-Cycle Current Limiting:** Protects against overcurrent conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  
- **Synchronizable Oscillator:** Allows synchronization to an external clock.  
- **Error Amplifier:** Supports voltage feedback control loops.  
- **Thermal Shutdown:** Protects the device from overheating.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to Texas Instruments' official documentation.

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