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MAX851ISA from MAX,MAXIM - Dallas Semiconductor

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MAX851ISA

Manufacturer: MAX, MAXIM

Low-Noise / Regulated / Negative Charge-Pump Power Supplies for GaAsFET Bias

Partnumber Manufacturer Quantity Availability
MAX851ISA MAX, MAXIM 66 In Stock

Description and Introduction

Low-Noise / Regulated / Negative Charge-Pump Power Supplies for GaAsFET Bias The MAX851ISA is a low-dropout linear regulator manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Output Voltage Options:** Fixed (3.3V, 5V) or adjustable (1.25V to 11V).  
- **Output Current:** 120mA (guaranteed).  
- **Dropout Voltage:** 120mV (typical at 100mA load).  
- **Input Voltage Range:** Up to 12V.  
- **Quiescent Current:** 50µA (typical).  
- **Load Regulation:** 0.05%/mA (typical).  
- **Line Regulation:** 0.01%/V (typical).  
- **Operating Temperature Range:** -40°C to +85°C.  
- **Package:** 8-pin SOIC.  

### **Descriptions:**  
- The MAX851ISA is a precision, low-dropout linear regulator designed for battery-powered and portable applications.  
- It provides stable output voltage with minimal power dissipation.  
- Includes thermal shutdown and current-limit protection.  

### **Features:**  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Low Quiescent Current:** Ideal for battery-operated devices.  
- **Adjustable or Fixed Output:** Offers design flexibility.  
- **Thermal Shutdown Protection:** Prevents overheating damage.  
- **Current Limit Protection:** Safeguards against excessive load currents.  
- **Stable with Low-ESR Capacitors:** Works with ceramic or tantalum capacitors.  

For exact details, refer to the official datasheet from Analog Devices (formerly Maxim Integrated).

Application Scenarios & Design Considerations

Low-Noise / Regulated / Negative Charge-Pump Power Supplies for GaAsFET Bias

Alternative Part Number

  • LT1964ES5-5 --: Low-noise low-dropout linear regulator in the same 5V class, widely available and pin-compatible in function for many MAX851 applications.
  • LP2985AIM5-5.0 --: 5V low-dropout regulator with similar current capability and low quiescent current, a common drop-in functional replacement.
  • TLV70050DCKR --: 5V CMOS LDO with low dropout and small package, suitable as a functional substitute where board space and efficiency matter.
  • LM337L --: Classic adjustable negative linear regulator covering similar voltage and current range, very common and easy to source as a functional substitute.
  • MC79L05 --: Fixed -5V negative linear regulator in a comparable low-current class, inexpensive and broadly stocked for applications needing a simple negative rail.

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