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ICGOO电子元器件商城为您提供MAX7302ATE+T由Maxim设计生产，在icgoo商城现货销售，并且可以通过原厂、代理商等渠道进行代购。 MAX7302ATE+T价格参考。MaximMAX7302ATE+T封装/规格：未分类， 暂无。您可以下载MAX7302ATE+T参考资料、Datasheet数据手册功能说明书，资料中有MAX7302ATE+T 详细功能的应用电路图电压和使用方法及教程。

The MAX7302ATE+T is an integrated circuit (IC) manufactured by Analog Devices (formerly Maxim Integrated). It is a 12-channel, constant-current sink, LED driver with an I²C-compatible interface. This device is commonly used in applications requiring precise control of multiple LEDs, such as display backlighting, indicator lighting, and general-purpose LED control.

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 🔍 Key Features of MAX7302ATE+T

| Feature | Description |
|--------|-------------|
| LED Channels | 12 constant-current sink channels |
| Current Control | 8-bit linear PWM control per channel (256 steps) |
| Maximum Current per Channel | Up to 50 mA |
| Interface | I²C (TWI) digital interface |
| Supply Voltage (VCC) | +2.5V to +5.5V |
| Operating Temperature | -40°C to +85°C |
| Package | TQFN (16-pin, 4mm x 4mm) |
| Output Type | Open-drain |
| Dimming Frequency | Up to 370 Hz (adjustable via I²C) |

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 📌 Typical Applications

- LED displays and signage
- Keypad and keyboard backlighting
- Indicator lights in industrial or consumer electronics
- Automotive lighting systems
- Smart lighting control systems

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 🧩 How It Works

The MAX7302 uses an I²C interface to communicate with a microcontroller or host system. Each of the 12 LED channels can be individually programmed to a specific brightness level using 8-bit PWM control.

- Each channel has a programmable current sink that maintains a constant current regardless of voltage variations.
- The global brightness and dimming frequency can be adjusted.
- LEDs can be turned on/off individually or globally.

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 📐 Pinout (16-TQFN Package)

| Pin | Name | Function |
|-----|------|----------|
| 1 | SDA | I²C data line |
| 2 | SCL | I²C clock line |
| 3 | ADDR | I²C address select |
| 4 | GND | Ground |
| 5–16 | LED0–LED11 | LED current sink outputs |
| 17 | OSC | Oscillator pin (can be left floating) |
| 18 | EN | Enable pin (active high) |
| 19 | INT | Interrupt output (not used in MAX7302) |
| 20 | VCC | Power supply (2.5V–5.5V) |

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 📚 I²C Communication

The MAX7302 supports standard and fast I²C modes (up to 400 kHz). The default I²C address is determined by the logic level on the ADDR pin.

- ADDR = GND → I²C Address: `0x58`
- ADDR = VCC → I²C Address: `0x59`

Registers are used to control:
- LED brightness (individual and global)
- Output enable/disable
- Dimming frequency

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 ✅ Advantages

- High integration (12 channels in small package)
- Constant-current ensures uniform brightness
- I²C simplifies microcontroller interfacing
- Wide supply voltage range

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 🔗 Datasheet & Resources

You can find the official datasheet here:

🔗 [MAX7302 Datasheet (Analog Devices)](https://www.analog.com/media/en/technical-documentation/data-sheets/max7302.pdf)

Other useful resources:
- Application notes for LED lighting control
- I²C interface tutorials
- Example code for Arduino or Raspberry Pi

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 🧑‍🔧 Example Use Case (Arduino)

Here's a basic Arduino sketch to initialize the MAX7302 and set LED0 to 50% brightness:

```cpp
#include 

#define MAX7302_ADDR 0x58

void setup() {
  Wire.begin();
  // Set LED0 brightness to 128 (50%)
  Wire.beginTransmission(MAX7302_ADDR);
  Wire.write(0x00);       // Register for LED0
  Wire.write(128);        // Brightness value (0-255)
  Wire.endTransmission();
}

void loop() {
  // Your main code here
}
```

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If you're working with this chip and need help with firmware, hardware setup, or debugging, feel free to ask!