IC Phoenix logo

Home ›  M  › M69 > MAX639CPA

MAX639CPA from MAXIM,MAXIM,MAXIM - Dallas Semiconductor

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

MAX639CPA

Manufacturer: MAXIM,MAXIM, MAX

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

Partnumber Manufacturer Quantity Availability
MAX639CPA MAXIM,MAXIM, MAX 25132 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

Alternative Part Number

  • LM2594N-5.0 --: Pin-compatible step-down switching regulator in DIP-8 with similar input voltage range and current capability, widely available and cost-effective.
  • MC34063AP --: Classic DIP-8 inverting/step-down/step-up switching regulator with comparable voltage and current ratings, very common and inexpensive.
  • LT1073CN8 --: DIP-8 micropower DC-DC converter with similar input range and adjustable output, suitable as a functional substitute for low-power designs.
  • LM2574N-5.0 --: Pin-compatible step-down switching regulator in a DIP-8 package with fixed 5V output, widely available and a common drop-in substitute for the MAX639 in many buck converter designs.
  • MC34063A --: Versatile DC-DC switching regulator controller in DIP-8 that can be configured for step-down operation, very low cost and broadly stocked as a general-purpose alternative.
  • LT1076CT --: Robust step-down switching regulator in a TO-220 package with adjustable output, suitable when higher current capability and thermal performance are needed compared to the MAX639.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips