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ISL8105AIBZ from INTERSIL

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ISL8105AIBZ

Manufacturer: INTERSIL

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers

Partnumber Manufacturer Quantity Availability
ISL8105AIBZ INTERSIL 306 In Stock

Description and Introduction

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers The **ISL8105AIBZ** is a **synchronous buck PWM controller** manufactured by **Intersil** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on available data:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 14V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** Adjustable from 100kHz to 1MHz  
- **Maximum Duty Cycle:** 100%  
- **Output Current:** Supports high-current applications (external MOSFETs required)  
- **Efficiency:** Up to 95% (depending on external components)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Lead SOIC  

### **Descriptions:**
- Designed for **DC-DC voltage regulation** in synchronous buck converter applications.  
- Uses **voltage-mode control** with **adjustable soft-start** for controlled power-up.  
- Includes **overcurrent protection (OCP)**, **overvoltage protection (OVP)**, and **undervoltage lockout (UVLO)**.  
- Compatible with **N-channel MOSFETs** for high-efficiency power conversion.  

### **Features:**
- **Adjustable Frequency:** Allows optimization for efficiency and component size.  
- **Precision Reference Voltage:** 0.8V ±1% accuracy.  
- **Integrated Bootstrap Diode:** Simplifies high-side MOSFET drive.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Synchronous Rectification:** Improves efficiency compared to diode-based designs.  

This controller is commonly used in **point-of-load (POL) converters**, **servers**, **telecom equipment**, and **industrial power supplies**.  

(Note: Always refer to the official datasheet for detailed specifications and application guidelines.)

Application Scenarios & Design Considerations

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers

Alternative Part Number

  • TPS5430DDA --: Widely available 3A step-down converter in SOIC-8 PowerPAD, similar input range and function, easy drop-in for many ISL8105A designs.
  • LM2675M-ADJ --: Simple 1A buck regulator in SOIC-8 with adjustable output, comparable switching regulator role and pin-compatible footprint.
  • MC34063ADR2G --: Versatile general-purpose DC-DC controller in SOIC-8, low cost and broadly stocked, usable as a functional substitute with minor external component changes.
Partnumber Manufacturer Quantity Availability
ISL8105AIBZ INTERSIL/PBF 306 In Stock

Description and Introduction

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers The ISL8105AIBZ is a synchronous buck PWM controller manufactured by INTERSIL/PBF.  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 24V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** 300kHz  
- **Maximum Duty Cycle:** 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** 8-SOIC  

### **Descriptions:**  
The ISL8105AIBZ is designed for high-efficiency DC-DC conversion in synchronous buck applications. It integrates control, monitoring, and protection features to simplify power supply designs.  

### **Features:**  
- **Voltage Mode Control**  
- **Adjustable Soft-Start**  
- **Overcurrent Protection (OCP)**  
- **Overvoltage Protection (OVP)**  
- **Undervoltage Lockout (UVLO)**  
- **Programmable Switching Frequency**  
- **Synchronous Rectification for Improved Efficiency**  

This information is based solely on the provided knowledge base.

Application Scenarios & Design Considerations

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers

Alternative Part Number

  • TPS40170RGYR --: Single-channel synchronous buck controller with similar input range and gate drive, widely available and pin-compatible in function.
  • LM27403SQ --: Synchronous buck controller offering comparable voltage-mode control and current sensing, suitable drop-in functional replacement.
  • NCP81174MNTXG --: Multi-phase buck controller with similar control architecture and driver interface, usable as an alternative with minor layout changes.
Partnumber Manufacturer Quantity Availability
ISL8105AIBZ 306 In Stock

Description and Introduction

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers The ISL8105AIBZ is a synchronous buck PWM controller manufactured by Renesas Electronics. Below are its key specifications, descriptions, and features based on the available knowledge base:  

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 24V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Switching Frequency:** Adjustable from 100kHz to 1MHz  
- **Maximum Duty Cycle:** 100%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Lead SOIC  

### **Descriptions:**  
- The ISL8105AIBZ is designed for high-efficiency DC-DC conversion in synchronous buck applications.  
- It supports single or dual-phase operation for higher current applications.  
- Features include adjustable soft-start, overcurrent protection, and undervoltage lockout (UVLO).  

### **Features:**  
- **Adjustable Output Voltage:** Uses an external resistor divider to set the output voltage.  
- **Precision Reference Voltage:** 0.8V ±1% accuracy.  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Uses inductor DCR sensing or external resistors for current limiting.  
- **Synchronization Capability:** Can sync to an external clock.  
- **Power Good Indicator:** Monitors output voltage status.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

5V or 12V Single-Phase Synchronous Buck Converter PWM Controller withIntegrated MOSFET Gate Drivers

Alternative Part Number

  • TPS40170RGYR --: Single-channel synchronous buck controller with similar input voltage range and gate drive capability, widely available and pin-compatible in function.
  • LM27403SQ/NOPB --: Synchronous buck controller offering comparable voltage-mode control and current-limit features, suitable drop-in functional replacement.
  • NCP81174MNTXG --: Multi-phase buck controller with similar control architecture and protection features, usable as an alternative with layout review.

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