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ISL6521IBZ-T from INTERSIL,IN,Intersil

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ISL6521IBZ-T

Manufacturer: INTERSIL,IN

PWM Buck DC-DC and Triple Linear Power Controller

Partnumber Manufacturer Quantity Availability
ISL6521IBZ-T,ISL6521IBZT INTERSIL,IN 5000 In Stock

Description and Introduction

PWM Buck DC-DC and Triple Linear Power Controller The ISL6521IBZ-T is a single synchronous buck PWM controller manufactured by Intersil (now part of Renesas Electronics). Below are the key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Intersil (now Renesas Electronics)  
- **Package:** SOIC-8  
- **Input Voltage Range:** 4.5V to 12V  
- **Output Voltage Range:** 0.8V to 5.5V (adjustable via external resistors)  
- **Switching Frequency:** 300kHz (fixed)  
- **Output Current:** Up to 15A (dependent on external MOSFETs)  
- **Duty Cycle Range:** 0% to 100%  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Protection Features:** Overvoltage protection (OVP), undervoltage lockout (UVLO), and programmable soft-start  

### **Description:**
The ISL6521IBZ-T is a high-performance PWM controller designed for synchronous buck DC-DC converter applications. It provides precise voltage regulation for powering microprocessors, ASICs, and other low-voltage digital ICs. The device integrates a high-speed error amplifier, PWM comparator, and MOSFET drivers to efficiently regulate the output voltage.  

### **Features:**
- **Single-Phase Synchronous Buck Controller**  
- **Adjustable Output Voltage** (via external feedback resistors)  
- **Fixed 300kHz Switching Frequency**  
- **Integrated MOSFET Drivers**  
- **Programmable Soft-Start**  
- **Overvoltage Protection (OVP)**  
- **Undervoltage Lockout (UVLO)**  
- **Wide Input Voltage Range (4.5V to 12V)**  
- **High Efficiency (up to 95%)**  
- **SOIC-8 Package for Compact Designs**  

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

Application Scenarios & Design Considerations

PWM Buck DC-DC and Triple Linear Power Controller

Alternative Part Number

  • LM5642MTCX --: Dual synchronous buck controller with similar PWM regulation function and SOIC/TSSOP package, widely available and pin-function compatible for many ISL6521 applications.
  • MIC2182YM --: Versatile PWM buck controller offering comparable voltage-mode control and gate drive, suitable as a functional substitute in DC-DC converter designs.
  • TPS40057PWPR --: Wide-input synchronous buck controller with similar control loop and protection features, usable as an alternative with minor external component adjustments.
  • HIP6301CB --: Same vendor family of multiphase PWM controllers with comparable buck-converter control function; verify pinout and voltage-mode compatibility before substitution.
  • LM2743MTCX --: Low-voltage synchronous buck controller offering comparable switching control features and broad availability as an alternative source.

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