If you are an electronics engineer, a hobbyist, or a procurement specialist, you have likely typed into a search engine. This article serves as a comprehensive guide to understanding, locating, and interpreting the datasheet for the 8681L IC. We will cover its likely specifications, typical applications, pinout expectations, electrical characteristics, and how to use the datasheet effectively for your project design.
Introduction In the vast ecosystem of integrated circuits, certain components become quiet workhorses in countless electronic devices. The 8681L IC is one such component—a specialized chip that, while not as famous as a microcontroller or operational amplifier, plays a critical role in power management, signal interfacing, or peripheral control, depending on its specific family.
| Pin # | Name | Description | |-------|------|-------------| | 1 | VIN | Unregulated input voltage | | 2 | GND | Ground | | 3 | EN | Enable control (active high) | | 4 | NC | No connect (or bypass cap pin) | | 5 | VOUT | Regulated output voltage | 8681l ic datasheet
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |-----------|--------|----------------|-----|-----|-----|------| | Input Voltage | VIN | – | 2.0 | – | 6.0 | V | | Output Voltage | VOUT | Fixed option | 3.267 | 3.3 | 3.333 | V | | Output Current | IOUT | – | 0 | – | 300 | mA | | Dropout Voltage | VDROP | IOUT = 200 mA | – | 120 | 180 | mV | | Quiescent Current | IQ | No load | – | 25 | 50 | µA | | Shutdown Current | ISD | EN = GND | – | 0.1 | 1 | µA | | Line Regulation | ΔVOUT / ΔVIN | VIN = (VOUT+1) to 6V, IOUT=10mA | – | 0.05 | 0.2 | %/V | | Load Regulation | ΔVOUT / ΔIOUT | IOUT = 1 to 250 mA | – | 0.1 | 0.5 | % | | Power Supply Ripple Rejection | PSRR | f = 1 kHz, IOUT = 100 mA | – | 65 | – | dB | | Thermal Shutdown | TSD | – | 150 | 160 | 170 | °C | If the 8681L is an LDO, the pinout will typically be:
| IC Part | Output Voltage | Max Current | Dropout | Quiescent Current | Package | Best For | |---------|----------------|-------------|---------|-------------------|---------|----------| | | 3.3V | 300 mA | 120 mV | 25 µA | SOT-23-5 | Battery, low noise | | LM1117-3.3 | 3.3V | 800 mA | 1.1V | 5 mA | SOT-223 | High current, legacy | | MCP1703-3.3 | 3.3V | 250 mA | 625 mV | 2 µA | SOT-23 | Ultra-low IQ | | XC6206P332 | 3.3V | 200 mA | 250 mV | 1 µA | SOT-23 | Cost-sensitive, low power | | RT9013-33 | 3.3V | 500 mA | 250 mV | 25 µA | SC-70 | Fast transient response | If you are an electronics engineer, a hobbyist,
Note: Some 3-pin SOT-89 versions omit the EN pin and NC. Based on the datasheet’s typical application section, you can deploy the 8681L in several common designs. 4.1 Basic Fixed Voltage Regulator This is the simplest use case—converting a higher voltage (e.g., 5V USB) to a lower, cleaner 3.3V.
While this guide has provided an educated framework for understanding the 8681L (assuming it is a low-dropout regulator), Never trust a pinout or maximum rating from a forum or an AI model alone. Introduction In the vast ecosystem of integrated circuits,
P = (VIN - VOUT) * IOUT = (5.0 - 3.3) * 0.3 = 0.51 Watts In a SOT-23-5 package with θJA ≈ 250°C/W, the temperature rise is:
If you are an electronics engineer, a hobbyist, or a procurement specialist, you have likely typed into a search engine. This article serves as a comprehensive guide to understanding, locating, and interpreting the datasheet for the 8681L IC. We will cover its likely specifications, typical applications, pinout expectations, electrical characteristics, and how to use the datasheet effectively for your project design.
Introduction In the vast ecosystem of integrated circuits, certain components become quiet workhorses in countless electronic devices. The 8681L IC is one such component—a specialized chip that, while not as famous as a microcontroller or operational amplifier, plays a critical role in power management, signal interfacing, or peripheral control, depending on its specific family.
| Pin # | Name | Description | |-------|------|-------------| | 1 | VIN | Unregulated input voltage | | 2 | GND | Ground | | 3 | EN | Enable control (active high) | | 4 | NC | No connect (or bypass cap pin) | | 5 | VOUT | Regulated output voltage |
| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |-----------|--------|----------------|-----|-----|-----|------| | Input Voltage | VIN | – | 2.0 | – | 6.0 | V | | Output Voltage | VOUT | Fixed option | 3.267 | 3.3 | 3.333 | V | | Output Current | IOUT | – | 0 | – | 300 | mA | | Dropout Voltage | VDROP | IOUT = 200 mA | – | 120 | 180 | mV | | Quiescent Current | IQ | No load | – | 25 | 50 | µA | | Shutdown Current | ISD | EN = GND | – | 0.1 | 1 | µA | | Line Regulation | ΔVOUT / ΔVIN | VIN = (VOUT+1) to 6V, IOUT=10mA | – | 0.05 | 0.2 | %/V | | Load Regulation | ΔVOUT / ΔIOUT | IOUT = 1 to 250 mA | – | 0.1 | 0.5 | % | | Power Supply Ripple Rejection | PSRR | f = 1 kHz, IOUT = 100 mA | – | 65 | – | dB | | Thermal Shutdown | TSD | – | 150 | 160 | 170 | °C | If the 8681L is an LDO, the pinout will typically be:
| IC Part | Output Voltage | Max Current | Dropout | Quiescent Current | Package | Best For | |---------|----------------|-------------|---------|-------------------|---------|----------| | | 3.3V | 300 mA | 120 mV | 25 µA | SOT-23-5 | Battery, low noise | | LM1117-3.3 | 3.3V | 800 mA | 1.1V | 5 mA | SOT-223 | High current, legacy | | MCP1703-3.3 | 3.3V | 250 mA | 625 mV | 2 µA | SOT-23 | Ultra-low IQ | | XC6206P332 | 3.3V | 200 mA | 250 mV | 1 µA | SOT-23 | Cost-sensitive, low power | | RT9013-33 | 3.3V | 500 mA | 250 mV | 25 µA | SC-70 | Fast transient response |
Note: Some 3-pin SOT-89 versions omit the EN pin and NC. Based on the datasheet’s typical application section, you can deploy the 8681L in several common designs. 4.1 Basic Fixed Voltage Regulator This is the simplest use case—converting a higher voltage (e.g., 5V USB) to a lower, cleaner 3.3V.
While this guide has provided an educated framework for understanding the 8681L (assuming it is a low-dropout regulator), Never trust a pinout or maximum rating from a forum or an AI model alone.
P = (VIN - VOUT) * IOUT = (5.0 - 3.3) * 0.3 = 0.51 Watts In a SOT-23-5 package with θJA ≈ 250°C/W, the temperature rise is: