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MAX5921BESA+ from MAXIM,MAXIM - Dallas Semiconductor

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MAX5921BESA+

Manufacturer: MAXIM, MAX

-48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current

Partnumber Manufacturer Quantity Availability
MAX5921BESA+,MAX5921BESA MAXIM, MAX 2430 In Stock

Description and Introduction

-48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current The **MAX5921BESA+** is a power management IC manufactured by **MAXIM** (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Manufacturer:** MAXIM (Analog Devices)  
- **Package:** 8-SOIC (150mil)  
- **Type:** Hot Swap Controller  
- **Operating Voltage Range:** 9V to 80V  
- **Current Limit:** Adjustable  
- **Fault Protection:** Overcurrent, Undervoltage Lockout (UVLO)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Internal MOSFET:** No (Requires External FET)  

### **Descriptions:**  
The **MAX5921BESA+** is a high-voltage hot swap controller designed for applications requiring safe insertion and removal of circuit boards in live backplanes. It provides inrush current control, fault protection, and power management for systems operating in harsh environments.  

### **Features:**  
- **Wide Input Voltage Range (9V to 80V)** – Suitable for high-voltage applications.  
- **Adjustable Current Limit** – Allows customization for different load conditions.  
- **Fast Overcurrent Protection** – Shuts down the external MOSFET in case of a fault.  
- **Undervoltage Lockout (UVLO)** – Prevents operation below the minimum voltage threshold.  
- **Programmable Fault Timer** – Configurable response time for fault conditions.  
- **Low Quiescent Current** – Optimized for power efficiency.  
- **SOIC-8 Package** – Compact and suitable for space-constrained designs.  

This IC is commonly used in telecom, industrial, and networking equipment where reliable hot swap functionality is required.

Application Scenarios & Design Considerations

-48V Hot-Swap Controllers with External RSENSE and High Gate Pulldown Current

Alternative Part Number

  • TPS2410PWR --: Hot-swap controller with similar functionality and pin-compatible SOIC package; widely available and cost-effective alternative.
  • LTC4211CMS8 --: Hot-swap controller offering comparable current limiting and fault protection features in a small MSOP package.
  • ADM1075-1ARJZ --: Negative voltage hot-swap controller with similar protection functions, suitable for telecom and industrial applications.
  • LTC4365CTS8-1#PBF --: Hot swap controller with overvoltage/undervoltage protection in an 8-lead package, functionally similar to the MAX5921 hot-swap controller.
  • TPS2419D --: Hot swap and inrush current controller with adjustable current limit, suitable replacement for 8-pin hot-swap controller applications.
  • LM5069MM-1/NOPB --: Positive high-voltage hot swap controller with programmable current limit and fault protection, comparable function to the MAX5921.

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