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MAX891LEUA from MAXIM,MAXIM - Dallas Semiconductor

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MAX891LEUA

Manufacturer: MAXIM, MAX, MAXI, MAXIN

Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

Partnumber Manufacturer Quantity Availability
MAX891LEUA MAXIM, MAX, MAXI, MAXIN 2231 In Stock

Description and Introduction

Current-Limited, High-Side P-Channel Switches with Thermal Shutdown The MAX891LEUA is a low-dropout linear regulator (LDO) manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:  

### **Manufacturer:** Maxim Integrated (Analog Devices)  
### **Part Number:** MAX891LEUA  

### **Specifications:**  
- **Output Voltage:** Fixed 3.3V  
- **Output Current:** 150mA  
- **Dropout Voltage:** 120mV (typical) at 100mA load  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Quiescent Current:** 30µA (typical)  
- **Package:** 8-pin µMAX (MicroMAX)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Accuracy:** ±2% over line, load, and temperature  
- **Low-Battery Detector Threshold:** Adjustable via external resistors  

### **Descriptions:**  
The MAX891LEUA is a micropower, low-dropout linear regulator designed for battery-powered applications. It features an ultra-low quiescent current, making it suitable for portable devices. The regulator includes a low-battery detector with an adjustable threshold, enhancing power management in systems with varying supply voltages.  

### **Features:**  
- Ultra-low dropout voltage (120mV typical at 100mA)  
- Low quiescent current (30µA typical)  
- Fixed 3.3V output  
- Adjustable low-battery detector  
- Thermal shutdown and current-limit protection  
- Stable with low-ESR ceramic capacitors  
- Small 8-pin µMAX package for space-constrained designs  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

Alternative Part Number

  • TPS2553DBVR --: Adjustable current-limited power switch in SOT-23-6 with similar current-limit and fault-reporting functions, widely available and pin-function compatible for many designs.
  • MIC2026-1YM --: Dual-channel current-limited power distribution switch with thermal shutdown and fault flag, suitable replacement for load-switch applications in the same voltage range.
  • AP2553W6-7 --: Current-limited high-side power switch in SOT-26 with adjustable current limit and enable control, offering comparable protection features at lower cost.
  • MIC2005A-1YM5 --: Current-limited high-side switch with adjustable limit and thermal shutdown, functionally comparable to the MAX891L in a small package.
  • TPS2041BDBVR --: Current-limited high-side power switch in SOT-23-5 with similar current-limit and thermal shutdown behavior, a common cross for MAX891-type switches.
  • MIC2025-1YM --: Adjustable current-limited USB power distribution switch in SOIC-8, functionally comparable to the MAX891L current-limited switch.
  • AP2552W6-7 --: Current-limited power switch with programmable current limit in SOT-26, suitable as a functional replacement for the MAX891L.

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