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ISL6439ACB from INTERSIL

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ISL6439ACB

Manufacturer: INTERSIL

Single Sync Buck PWM Controller for Broadband Gateway Applications

Partnumber Manufacturer Quantity Availability
ISL6439ACB INTERSIL 7 In Stock

Description and Introduction

Single Sync Buck PWM Controller for Broadband Gateway Applications The **ISL6439ACB** is a power management IC manufactured by **Intersil** (now part of Renesas Electronics). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Manufacturer:** Intersil (Renesas Electronics)  
- **Part Number:** ISL6439ACB  
- **Type:** Dual PWM Controller with LDO Regulator  
- **Input Voltage Range:** 4.5V to 5.5V (VCC)  
- **Output Voltage Range:** Adjustable (PWM outputs)  
- **Switching Frequency:** Up to 1MHz (programmable)  
- **Number of Outputs:** 2 PWM controllers + 1 LDO regulator  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-lead SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**
The ISL6439ACB is a **dual PWM controller** with an integrated **low-dropout (LDO) linear regulator**, designed for **high-efficiency power supply applications**. It provides precise voltage regulation for **microprocessors, ASICs, and other digital ICs**.  

### **Features:**
- **Dual PWM Controllers:** Supports two independent synchronous buck regulators.  
- **Integrated LDO Regulator:** Provides a low-noise, low-dropout voltage rail.  
- **Programmable Switching Frequency:** Up to 1MHz for optimized efficiency.  
- **Voltage Margining:** Allows dynamic adjustment of output voltage.  
- **Power-Good (PG) Output:** Monitors both PWM outputs for fault detection.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Overcurrent Protection (OCP):** Safeguards against excessive load conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within voltage limits.  

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

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