8682l Datasheet

The 8682l is simplicity itself. A basic fixed voltage regulator circuit requires only two external capacitors:

        +Vin (5V to 12V)                     +Vout (3.3V or 5V)
             |                                     |
            ---                                   ---
           | C1 |                                 | C2 |
           |1µF |                                 |10µF|
            ---                                   ---
             |                                     |
             +-----+--------+                      +----- Regulated Output
                   |        |                            |
                   |      +---+                          |
                   +------|IN |------+                    |
                   |      |8682|      |                    |
                   +------|GND|      +--------------------+
                   |      |OUT|------+----+     
                   |      +---+      |    |
                   |                  ---  |
                  GND                 GND GND

Component Values:

Due to its moderate current and low dropout, the 8682l is found in:

This MCU is essentially a more advanced version of the popular 68HC11, offering 16-bit processing power while maintaining backward compatibility.

If you cannot source an original 8682l, or if the datasheet is unavailable, consider these drop-in replacements (ensure pin compatibility first): 8682l Datasheet

| Substitute Part | Key Difference | When to Use It | | :--- | :--- | :--- | | LM1117-3.3 / LM1117-5.0 | Higher max current (800mA), larger package (SOT-223) | When needing >300mA. Not pin-compatible with SOT-23. | | XC6206P332MR | Ultra-low quiescent current (1µA), same pinout (SOT-23) | For battery-powered upgrades. Direct substitute for 3.3V variant. | | 78L05 | Standard dropout (1.7V), TO-92 package only | For older through-hole designs, but dropout is much worse. | | MCP1700-3302E | Very low quiescent (1.6µA), SOT-23 | Modern replacement for 3.3V 8682l in low-power IoT. |

Warning: Never replace a fixed-output 8682l with an adjustable regulator (like LM317) without external resistor networks. That will change the circuit behavior.

While an official datasheet from a specific manufacturer is definitive, the following table represents the most commonly cited specifications for devices matching the 8682l designation in repair and design communities.

| Parameter | Symbol | Typical Value | Unit | Condition | | :--- | :--- | :--- | :--- | :--- | | Output Voltage | Vout | 3.3, 5.0, or 8.0 | V | Fixed (check marking) | | Input Voltage Range | Vin | 4.5 to 18 | V | Max 20V | | Output Current | Iout | 150 to 300 | mA | Depending on package | | Dropout Voltage | Vdo | 0.3 to 0.7 | V | @ Iout=100mA | | Quiescent Current | Iq | 2 to 5 | mA | Typical | | Line Regulation | | 0.1 | %/V | | | Load Regulation | | 0.5 | % | | | Operating Temp | Top | -40 to +85 | °C | Industrial range | | Storage Temp | Tstg | -55 to +150 | °C | | The 8682l is simplicity itself

Explanation of Key Specs:

When a circuit containing an 8682l fails, here’s a diagnostic flowchart:

Symptom 1: No Output Voltage

Symptom 2: Output Voltage is Too Low (e.g., 2.0V instead of 3.3V) Component Values:

Symptom 3: Regulator Overheats

Symptom 4: Output Ripple / Noise

Before diving into raw numbers, it’s crucial to understand what the 8682l likely is. Based on component naming conventions and common industry databases, the 8682l is most frequently associated with:

Cross-referencing with major manufacturers (such as Seiko Instruments, Mitsumi, or Sanyo) suggests that the 8682l is often a positive voltage regulator with a fixed output voltage, typically in the range of 3.3V, 5V, or 8V, housed in a small SOT-23 or TO-92 package.

Crucial Warning: There is no universal standard for part numbers. Always compare the physical package and circuit context before assuming compatibility.