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Always consult the specific manufacturer's datasheet for guaranteed min/typical/max values.
| IC | Dropout | Iq (typ) | Max Iout | Enable | Best For | |----|---------|----------|----------|--------|----------| | 8682L | 0.6V | 3mA | 300mA | No | Cost-sensitive, moderate current | | 78L05 | 1.7V | 3mA | 100mA | No | Legacy designs, lower current | | LM1117 | 1.2V | 5mA | 800mA | No | Higher output current | | MCP1700 | 0.18V | 1.6µA | 250mA | No | Battery-powered (low Iq) | | AP2112 | 0.3V | 55µA | 600mA | Yes | Enable + low dropout |
| Parameter | Value | |-----------|-------| | Output Voltage (Fixed) | 3.3V, 5.0V, 9V, 12V (varies by suffix) | | Maximum Output Current | 150mA – 300mA (depending on package) | | Dropout Voltage | ~0.5V – 0.7V @ 100mA | | Input Voltage Range | Up to 30V (Absolute Max ~35V) | | Line Regulation | 0.2% / V | | Load Regulation | 0.4% typical | | Quiescent Current | 2mA – 5mA |
Based on reverse-engineered circuits from devices like Bluetooth headsets, small power banks, and LED drivers, the 8682L in a 5-pin SOT-23 package typically follows this pinout: 8682l ic datasheet
| Pin No. | Name | Description | |---------|------------|------------------------------------| | 1 | VIN | Input voltage (2.5V – 6.0V) | | 2 | GND | Ground | | 3 | EN (or NC) | Enable pin (active high, tie to VIN if unused) | | 4 | NC / ADJ | No connect or feedback/adjust | | 5 | VOUT | Regulated output voltage |
For SOT-89 package (3-pin):
1 – VIN, 2 – GND, 3 – VOUT (fixed voltage). No enable pin.
For SOT-23-6 variant (sometimes labeled 8682L):
Pins 1-6: VIN, GND, EN, BP (bypass), FB (feedback), VOUT. If you cannot source the 8682L or its
⚠️ Warning: Without the original datasheet, these pinouts are derived from common LDO topologies. Always test continuity and voltage behavior on a known working board or use a component tester.
If you cannot source the 8682L or its datasheet, consider these direct replacements (check pinout first):
| Part Number | Package | Vout Fixed | Iout max | Quiescent | Similarity | |----------------|-------------|------------|----------|-----------|---------------------| | ME6211C33M5G | SOT-23-5 | 3.3V | 500mA | 45µA | Very close | | RT9193-33GB | SOT-23-5 | 3.3V | 300mA | 90µA | Pin-compatible | | AP2112K-3.3TRG1| SOT-23-5 | 3.3V | 600mA | 55µA | Higher current | | XC6206P332MR | SOT-23-3 | 3.3V | 250mA | 1µA | Lower quiescent | | AMS1117-3.3 | SOT-223 | 3.3V | 1A | 5mA | Larger package | Always verify enable logic
Always verify enable logic, pin assignments, and capacitor requirements before substituting.
Given that the 8682L is not always listed on mainstream sites like Texas Instruments or Mouser, you must use alternative sources:
The 8682L is ideal for a 300mAh to 500mAh battery in a small form factor. Design parameters: