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ISL6522CB from NS,National Semiconductor

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ISL6522CB

Manufacturer: NS

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

Partnumber Manufacturer Quantity Availability
ISL6522CB NS 11 In Stock

Description and Introduction

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller The ISL6522CB is a dual MOSFET driver IC manufactured by Intersil (now part of Renesas Electronics). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** NS (National Semiconductor, later acquired by Intersil/Renesas)
- **Package:** 16-Lead SOIC (Small Outline Integrated Circuit)
- **Operating Voltage Range:** 4.5V to 5.5V
- **Output Current:** Up to 2A (peak) per channel
- **Switching Frequency:** Up to 1MHz
- **Input Logic Compatibility:** TTL/CMOS
- **Operating Temperature Range:** -40°C to +85°C

### **Descriptions:**
- The ISL6522CB is a high-frequency, dual MOSFET driver designed for synchronous buck converter applications.
- It provides two independent gate drivers to control high-side and low-side N-channel MOSFETs in a synchronous rectified buck converter.
- The device includes adaptive shoot-through protection to prevent both MOSFETs from conducting simultaneously.

### **Features:**
- **Dual Output Drivers:** Independent high-side and low-side drivers.
- **Adaptive Shoot-Through Protection:** Prevents cross-conduction.
- **Fast Rise/Fall Times:** Optimized for high-frequency switching.
- **Wide Input Voltage Range:** Supports 4.5V to 5.5V operation.
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.
- **TTL/CMOS Compatible Inputs:** Easy interfacing with logic circuits.

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

Application Scenarios & Design Considerations

Buck and Synchronous Rectifier Pulse-Width Modulator (PWM) Controller

Alternative Part Number

  • UC3843AN --: Industry-standard current-mode PWM controller in DIP-8, functionally similar to the ISL6522 synchronous buck controller and widely available as a drop-in style replacement.
  • SG3525AN --: Voltage-mode PWM controller in DIP-16 with totem-pole outputs, commonly used in similar power supply designs and easy to source.
  • TL494CN --: Classic general-purpose PWM controller in DIP-16, very low cost and broadly stocked, suitable for many buck/forward converter applications replacing the ISL6522.

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