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MAX1589EZT180-T from MAX,MAXIM - Dallas Semiconductor

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MAX1589EZT180-T

Manufacturer: MAX, MAXIM

Low-input-voltage, 500mA LDO regulator with RESET, out=1.8V

Partnumber Manufacturer Quantity Availability
MAX1589EZT180-T,MAX1589EZT180T MAX, MAXIM 2802 In Stock

Description and Introduction

Low-input-voltage, 500mA LDO regulator with RESET, out=1.8V The MAX1589EZT180-T is a high-efficiency, step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 2.6V to 5.5V  
- **Output Voltage:** 1.8V (fixed)  
- **Output Current:** Up to 600mA  
- **Switching Frequency:** 1MHz (typical)  
- **Efficiency:** Up to 95%  
- **Package:** 6-pin TDFN (Thin Dual Flat No-Lead)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Dropout Voltage:** 100mV (typical at 300mA load)  

### **Descriptions:**
- The MAX1589EZT180-T is a synchronous step-down DC-DC converter optimized for portable applications.  
- It integrates both high-side and low-side MOSFETs for improved efficiency.  
- The device operates in pulse-width modulation (PWM) mode for stable output under varying loads.  

### **Features:**
- **High Efficiency:** Up to 95% due to synchronous rectification.  
- **Low Quiescent Current:** 30µA (typical) in shutdown mode.  
- **Internal Soft-Start:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Prevents damage under fault conditions.  
- **Thermal Shutdown:** Protects the device from overheating.  
- **Small Footprint:** 6-pin TDFN package (2mm x 2mm) for space-constrained designs.  

This device is commonly used in battery-powered applications such as smartphones, portable media players, and handheld devices.

Application Scenarios & Design Considerations

Low-input-voltage, 500mA LDO regulator with RESET, out=1.8V

Alternative Part Number

  • TPS7A2018PDBVR --: Low-dropout linear regulator with fixed 1.8V output in a small SOT-23 package, functionally similar to the MAX1589 and widely available.
  • LP2985AIM5-1.8 --: 1.8V fixed-output LDO regulator in SOT-23-5, comparable current capability and pin-compatible style for many designs.
  • MIC5219-1.8YM5 --: 1.8V LDO regulator in SOT-23-5 with similar dropout and load characteristics, suitable as a drop-in style replacement.
  • TPS73618DBVT --: 1.8V fixed LDO in SOT-23-5 with similar current capability and low dropout, a common drop-in style replacement for MAX1589 series regulators.

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