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MAX639CPA from MAXIM,MAXIM,MAXIM - Dallas Semiconductor

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MAX639CPA

Manufacturer: MAXIM,MAXIM

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters

Partnumber Manufacturer Quantity Availability
MAX639CPA MAXIM,MAXIM 25000 In Stock

Description and Introduction

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters The MAX639CPA is a voltage regulator manufactured by Maxim Integrated (now part of Analog Devices). Below are the factual details about the part:  

### **Manufacturer:**  
- **MAXIM** (Maxim Integrated, now part of Analog Devices)  

### **Specifications:**  
- **Type:** Step-Down (Buck) Switching Regulator  
- **Input Voltage Range:** 5.5V to 11.5V  
- **Output Voltage:** Fixed 5V  
- **Output Current:** Up to 225mA  
- **Switching Frequency:** ~65kHz  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  
- **Dropout Voltage:** ~0.5V (at full load)  

### **Descriptions and Features:**  
- The MAX639CPA is a low-power, step-down DC-DC converter designed for battery-powered applications.  
- It requires minimal external components, making it suitable for space-constrained designs.  
- Features include low quiescent current (typically 100µA) and built-in over-temperature protection.  
- The regulator operates in a pulse-width modulation (PWM) mode for improved efficiency.  
- It includes an internal power MOSFET switch, reducing the need for external components.  

These details are based on the MAX639CPA datasheet from Maxim Integrated.

Application Scenarios & Design Considerations

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
Partnumber Manufacturer Quantity Availability
MAX639CPA MAXIM 89 In Stock

Description and Introduction

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters The MAX639CPA is a voltage regulator manufactured by Maxim Integrated (now part of Analog Devices). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

### **Specifications:**  
- **Manufacturer:** Maxim Integrated (now Analog Devices)  
- **Part Number:** MAX639CPA  
- **Package:** 8-Pin PDIP (Plastic Dual Inline Package)  
- **Input Voltage Range:** 5.5V to 11.5V  
- **Output Voltage:** Fixed 5V (adjustable with external components)  
- **Output Current:** Up to 225mA  
- **Dropout Voltage:** 0.5V (typical)  
- **Quiescent Current:** 10µA (typical)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Regulator Type:** Step-Down (Buck) Switching Regulator  
- **Switching Frequency:** ~45kHz (typical)  

### **Descriptions:**  
The MAX639CPA is a low-power, step-down DC-DC switching regulator designed to provide a stable 5V output from an input voltage ranging from 5.5V to 11.5V. It is optimized for battery-powered applications where efficiency and low quiescent current are critical. The device uses a pulse-width modulation (PWM) control scheme to regulate the output voltage efficiently.  

### **Features:**  
- High efficiency (up to 90%)  
- Low quiescent current (10µA typical)  
- Internal power MOSFET switch  
- Adjustable output voltage (with external resistors)  
- Built-in current limiting  
- Thermal shutdown protection  
- Small footprint (8-pin DIP package)  
- Suitable for battery-powered applications  

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

Application Scenarios & Design Considerations

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
Partnumber Manufacturer Quantity Availability
MAX639CPA MAX 21 In Stock

Description and Introduction

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters The MAX639CPA is a voltage regulator manufactured by Maxim Integrated. Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
- **MAX (Maxim Integrated)**  

### **Specifications:**  
- **Output Voltage:** Fixed 5V or adjustable (depending on variant)  
- **Input Voltage Range:** Up to 26.5V  
- **Output Current:** 225mA (maximum)  
- **Dropout Voltage:** 1V (typical at full load)  
- **Package:** 8-pin PDIP (Plastic Dual In-line Package)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Quiescent Current:** 10µA (typical)  
- **Protection Features:** Overcurrent and thermal shutdown  

### **Descriptions:**  
- The MAX639CPA is a low-power, step-down (buck) switching voltage regulator.  
- It is designed for applications requiring efficient power conversion with minimal external components.  
- Suitable for battery-powered systems and portable devices due to its low quiescent current.  

### **Features:**  
- High efficiency switching regulator  
- Low dropout voltage  
- Internal power MOSFET switch  
- Requires only four external components (inductor, diode, and two capacitors)  
- Fixed or adjustable output voltage options  
- Thermal shutdown and current limit protection  

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

Application Scenarios & Design Considerations

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters
Partnumber Manufacturer Quantity Availability
MAX639CPA MAXIM 22 In Stock

Description and Introduction

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters The MAX639CPA is a voltage regulator manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Input Voltage Range:** 5.5V to 11.5V  
- **Output Voltage:** 5V (fixed)  
- **Output Current:** Up to 225mA  
- **Dropout Voltage:** 0.5V (typical)  
- **Quiescent Current:** 10µA (typical)  
- **Operating Temperature Range:** 0°C to +70°C  
- **Package:** 8-pin PDIP (Plastic Dual In-line Package)  

### **Descriptions:**  
- The MAX639CPA is a low-dropout (LDO) linear voltage regulator designed for battery-powered applications.  
- It provides a fixed 5V output with high efficiency and low power consumption.  
- Includes built-in over-temperature and short-circuit protection.  

### **Features:**  
- **Low Quiescent Current:** Ideal for battery-operated devices.  
- **Low Dropout Voltage:** Ensures stable output even with low input voltages.  
- **Fixed 5V Output:** No external resistors required for voltage setting.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Short-Circuit Protection:** Safeguards the regulator and load.  

This information is strictly factual and sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

5V/3.3V/3V/Adjustable, High-Efficiency, Low IQ, Step-Down DC-DC Converters

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