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MAX1634EAI from MAX,MAXIM - Dallas Semiconductor

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MAX1634EAI

Manufacturer: MAX, MAXIM, MAXIM

Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers
Partnumber Manufacturer Quantity Availability
MAX1634EAI MAX, MAXIM, MAXIM 4192 In Stock

Description and Introduction

Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers The MAX1634EAI is a step-down controller manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX1634EAI  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Switching Frequency:** 300kHz (fixed)  
- **Output Current:** Up to 15A (with external MOSFETs)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The MAX1634EAI is a high-efficiency, step-down DC-DC controller designed for high-current applications. It provides precise output voltage regulation and is suitable for powering microprocessors, ASICs, and other low-voltage, high-current loads. The device uses synchronous rectification for improved efficiency and supports adjustable output voltage via external resistors.

### **Features:**
- **Wide Input Voltage Range (4.5V to 30V)**  
- **Adjustable Output Voltage (1.25V to 5.5V)**  
- **High-Efficiency Synchronous Rectification**  
- **300kHz Fixed-Frequency PWM Operation**  
- **Soft-Start Functionality**  
- **Overcurrent and Overtemperature Protection**  
- **External MOSFETs for High-Current Output (up to 15A)**  
- **Low Dropout Operation**  
- **Power-Good Output Monitor**  

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

Application Scenarios & Design Considerations

Multi-Output / Low-Noise Power-Supply Controllers for Notebook Computers

Alternative Part Number

  • LT1370CT7 --: High-efficiency step-down switching regulator controller with similar input range and current-mode control, suitable for the same power supply applications.
  • LM2678T-ADJ --: Simple switcher step-down regulator with wide input voltage and adjustable output, a common drop-in style replacement for MAX1634-class buck controllers.
  • MC34063ACN --: Versatile DC-DC converter controller covering step-down, step-up and inverting topologies, widely available and cost-effective for similar designs.
  • LTC1736CG --: Multi-output synchronous step-down controller with similar function and pin-compatible feature set, widely used as a MAX1634 replacement in notebook power supplies.
  • TPS51120PW --: Dual synchronous buck controller for notebook systems, comparable input range and output capability, suitable functional substitute.
  • ISL6236AIRZ --: Dual-channel step-down controller with similar architecture and voltage range, commonly cross-referenced for MAX1634 designs.
  • LTC1624CS8 --: Single-ended step-down switching regulator controller in an SO-8 package with a similar function and pin-compatible control scheme, widely used as a MAX1634 substitute.
  • LM3478MM --: High-efficiency low-side N-channel MOSFET controller in MSOP-8, offering comparable buck regulation performance and a different series naming for easy distinction.
  • ISL6520ACBZ --: Synchronous buck PWM controller in SOIC-8 with similar input range and compensation features, suitable as a functional replacement for the MAX1634.

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