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ISL6526IBZ from INTERSIL

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ISL6526IBZ

Manufacturer: INTERSIL, INTESIL

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Partnumber Manufacturer Quantity Availability
ISL6526IBZ INTERSIL, INTESIL 2361 In Stock

Description and Introduction

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller The ISL6526IBZ 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 from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Intersil (Renesas Electronics)  
- **Part Number:** ISL6526IBZ  
- **Package:** 16-Lead SOIC  
- **Input Voltage Range:** 3.3V or 5V (±10%)  
- **Output Voltage Range:** Adjustable (0.9V to 5.5V)  
- **Output Current:** Up to 6A (with external MOSFETs)  
- **Switching Frequency:** 200kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The ISL6526IBZ is a synchronous buck PWM controller designed for high-efficiency DC-DC voltage regulation. It provides precise control for step-down converters, supporting single or dual-phase operation. It includes integrated drivers for external N-channel MOSFETs, enabling high-current applications.

### **Features:**
- **Adjustable Output Voltage:** Supports 0.9V to 5.5V via external resistor divider.  
- **Programmable Switching Frequency:** 200kHz to 1MHz for flexibility in design.  
- **Integrated MOSFET Drivers:** Reduces external component count.  
- **Overcurrent Protection (OCP):** Uses MOSFET RDS(ON) sensing.  
- **Overvoltage Protection (OVP):** Safeguards against output voltage spikes.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Dual-Phase Capability:** Supports interleaved operation for higher power applications.  

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

Application Scenarios & Design Considerations

Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

Alternative Part Number

  • LM3485MM --: Single-channel PWM buck controller with similar voltage-mode control and SOIC-8/MSOP-8 footprint, widely available and pin-function compatible for many ISL6526 applications.
  • TPS40200DGQ --: Wide-input buck controller with comparable gate drive and feedback architecture, suitable replacement when design tolerances allow a different control topology.
  • UC3843BD1 --: Industry-standard current-mode PWM controller in SOIC-8, commonly used as a functional substitute for simple buck regulation where current-mode control is acceptable.
  • LM2743MTCX --: Single synchronous buck controller with similar voltage-mode PWM control and SOIC/TSSOP package, widely available and pin-function compatible for many ISL6526 designs.
  • TPS40057PWPR --: Synchronous buck controller with wide input range and similar gate-drive capability, suitable replacement for ISL6526 in DC-DC converter applications.
  • NCP1587ADR2G --: Low-cost synchronous buck controller with comparable feedback and compensation scheme, usable as a drop-in alternative after minor component value checks.

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