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ISL6443IRZ-T from INTERSIL

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ISL6443IRZ-T

Manufacturer: INTERSIL, INFERSIL

300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

Partnumber Manufacturer Quantity Availability
ISL6443IRZ-T,ISL6443IRZT INTERSIL, INFERSIL 12308 In Stock

Description and Introduction

300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller The ISL6443IRZ-T is a power management IC manufactured by INTERSIL (now part of Renesas Electronics). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** INTERSIL (Renesas Electronics)  
- **Part Number:** ISL6443IRZ-T  
- **Package:** 16-Lead QFN (Quad Flat No-Lead)  
- **Input Voltage Range:** 4.5V to 25V  
- **Output Voltage Range:** Adjustable (depends on configuration)  
- **Number of Outputs:** 2 (PWM Controller + Linear Controller)  
- **Switching Frequency:** Adjustable (250kHz to 1MHz)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Duty Cycle:** Up to 100%  
- **Protection Features:** Overvoltage, Undervoltage, Overcurrent  

### **Descriptions:**
The ISL6443IRZ-T is a dual-output power management IC designed for regulating power in applications such as telecom, networking, and industrial systems. It integrates a synchronous buck PWM controller and a linear controller to provide flexible power solutions.  

### **Features:**
1. **Dual Outputs:**  
   - Synchronous Buck PWM Controller (for high-efficiency step-down conversion)  
   - Linear Controller (for low-noise regulation)  
2. **Wide Input Voltage Range (4.5V–25V):** Supports various power sources.  
3. **Adjustable Switching Frequency (250kHz–1MHz):** Allows optimization for efficiency and component size.  
4. **Synchronous Rectification:** Improves efficiency by reducing conduction losses.  
5. **Integrated MOSFET Drivers:** Simplifies external circuitry.  
6. **Protection Features:**  
   - Overvoltage Protection (OVP)  
   - Undervoltage Lockout (UVLO)  
   - Overcurrent Protection (OCP)  
7. **Adjustable Soft-Start:** Reduces inrush current during startup.  
8. **Thermal Shutdown:** Prevents damage from excessive heat.  

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

Application Scenarios & Design Considerations

300kHz Dual, 180 Degree Out-of-Phase, Step-Down PWM and Single Linear Controller

Alternative Part Number

  • LM26420XSQ/NOPB --: Dual-channel synchronous buck controller with similar input range and current-mode control, suitable as a functional substitute in multi-rail power designs.
  • TPS55340PWPR --: Wide-input boost/converter controller often used in similar power management roles; verify topology and pinout before substitution.
  • MAX15021ATI+ --: Dual-output step-down controller with comparable voltage and current ratings, offering an alternative from a different vendor family.
  • LM26420XMHX/NOPB --: Dual-channel synchronous buck controller with similar input range and current-mode control, suitable as a functional substitute in multi-rail power designs.
  • MIC2174YMM --: Compact synchronous buck controller offering similar voltage regulation and current-limit behavior for a drop-in style redesign.

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