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MAX730ACSA from MAXIM,MAXIM - Dallas Semiconductor

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MAX730ACSA

Manufacturer: MAXIM

5V, Step-Down, Current-Mode PWM DC-DC Converters
Partnumber Manufacturer Quantity Availability
MAX730ACSA MAXIM 3233 In Stock

Description and Introduction

5V, Step-Down, Current-Mode PWM DC-DC Converters The MAX730ACSA is a serial-interfaced peripheral 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  
- **Part Number:** MAX730ACSA  
- **Package:** 8-pin SOIC (Small Outline Integrated Circuit)  
- **Interface:** SPI (Serial Peripheral Interface) / QSPI (Quad SPI) compatible  
- **Operating Voltage:** 2.7V to 5.5V  
- **Number of I/O Ports:** 20 (configurable as inputs or outputs)  
- **Output Current:** 25mA per I/O (sink/source)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Data Rate:** Up to 26MHz (SPI clock frequency)  
- **Internal Pull-Up Resistors:** Configurable per port  

### **Descriptions:**  
The MAX730ACSA is a serial-interfaced I/O expander that provides 20 additional I/O ports using a microcontroller’s SPI interface. It is designed for applications requiring multiple digital I/Os with minimal microcontroller pins. The device supports both input and output configurations, with internal pull-up resistors for input ports.  

### **Features:**  
- **SPI/QSPI-Compatible Interface** – Allows high-speed communication with microcontrollers.  
- **Wide Voltage Range (2.7V to 5.5V)** – Compatible with 3.3V and 5V systems.  
- **20 Configurable I/O Pins** – Each pin can be independently set as an input or output.  
- **High Output Drive (25mA per I/O)** – Suitable for driving LEDs and small relays.  
- **Internal Pull-Up Resistors** – Configurable for input ports.  
- **Low Power Consumption** – Optimized for battery-powered applications.  
- **Industrial Temperature Range (-40°C to +85°C)** – Suitable for harsh environments.  
- **Compact 8-Pin SOIC Package** – Space-saving design for PCB layouts.  

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

Application Scenarios & Design Considerations

5V, Step-Down, Current-Mode PWM DC-DC Converters

Alternative Part Number

  • LT1372CS8 --: Pin-compatible step-up switching regulator with similar input/output voltage and current ratings, widely used as a MAX730 replacement.
  • MC34063ACD --: Industry-standard adjustable DC-DC converter IC covering comparable voltage and current ranges, low cost and readily available.
  • LM2575T-ADJ --: Adjustable step-down regulator with similar current capability and voltage range, suitable for designs needing a simple buck conversion alternative.
  • LTC1144CS8 --: Switched-capacitor voltage converter in an 8-pin SOIC package with comparable inverting/step-down function and current capability, suitable as a functional substitute.
  • ICL7660SCPA --: Classic CMOS charge-pump voltage converter offering similar inversion and doubling functions, widely available and pin-compatible in function for many MAX730 applications.
  • TC7660COA --: Low-cost CMOS charge-pump converter in SOIC with equivalent voltage conversion behavior, a common drop-in functional alternative to the MAX730 series.

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