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MAX6946CAWE+T from MAX,MAXIM - Dallas Semiconductor

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MAX6946CAWE+T

Manufacturer: MAX, MAXIM

10-Port, Constant-Current LED Driver and I/O Expander with PWM Intensity Control

Partnumber Manufacturer Quantity Availability
MAX6946CAWE+T MAX, MAXIM 10000 In Stock

Description and Introduction

10-Port, Constant-Current LED Driver and I/O Expander with PWM Intensity Control The **MAX6946CAWE+T** is a serial-interfaced peripheral manufactured by **Maxim Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:  

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

### **Specifications:**  
- **Type:** 10-Output LED Driver with Open-Load Detection  
- **Interface:** **4-Wire SPI** (Serial Peripheral Interface)  
- **Number of Outputs:** **10** (constant-current sink)  
- **Output Current:** **Adjustable** (per output via external resistor)  
- **Supply Voltage:** **3.0V to 5.5V** (logic supply)  
- **LED Supply Voltage:** **Up to 13V** (independent of logic supply)  
- **Open-Load Detection:** **Yes** (detects missing or open LEDs)  
- **Dimming Control:** **PWM (Pulse-Width Modulation)** for brightness control  
- **Package:** **TSSOP-24** (Thin Shrink Small Outline Package)  
- **Operating Temperature Range:** **-40°C to +85°C**  

### **Descriptions:**  
- The **MAX6946CAWE+T** is a **serial-interfaced LED driver** designed to control up to **10 LEDs** with constant-current sink outputs.  
- It includes **open-load detection**, allowing the system to identify missing or disconnected LEDs.  
- Each output current is **individually adjustable** via an external resistor.  
- The device supports **PWM dimming** for brightness control.  
- It operates with a **3V to 5.5V logic supply** and can drive LEDs with a separate **up to 13V supply**.  

### **Features:**  
- **10 constant-current LED drivers**  
- **SPI-compatible serial interface** (4-wire)  
- **Open-load detection** for fault monitoring  
- **PWM dimming control** (12-bit resolution)  
- **Thermal shutdown protection**  
- **Low-power shutdown mode**  
- **24-pin TSSOP package**  

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

Application Scenarios & Design Considerations

10-Port, Constant-Current LED Driver and I/O Expander with PWM Intensity Control

Alternative Part Number

  • PCA9535PW --: 16-bit I2C I/O expander with similar GPIO expansion function and widely available alternative.
  • TCA9535PWR --: Pin-compatible I2C I/O expander family offering comparable LED driving and GPIO expansion capability.
  • PCF8575TS --: I2C 16-bit I/O expander with similar interface and output drive, suitable as a functional substitute.
  • PCA9535PW,118 --: 16-bit I2C I/O expander with similar GPIO expansion function and interrupt output, widely available and pin-compatible in function.
  • PCF8575TS/1,112 --: 16-bit I2C I/O expander with open-drain outputs, suitable drop-in functional replacement for LED driving and GPIO expansion.

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