MICROCHIP LR8N8-G Adjustable Linear Voltage Regulator, 1.2V to 440V, TO-243AA,
MICROCHIP LR8N8-G adjustable linear regulator, 1.2V-440V output, 13.2V-450V input, 20mA, TO-243AA, for industrial use.
The MICROCHIP LR8N8-G is a high-voltage, low-output-current adjustable linear regulator in a compact TO-243AA (SOT-89) surface-mount package. It accepts a wide input voltage range from 13.2V to 450V, making it suitable for a variety of industrial and power management applications. The output voltage can be adjusted from 1.2V to 440V using two external resistors, R1 and R2, relying on a precise internal 1.2V reference between the VOUT and ADJ pins.
The device includes a typical internal constant bias current of 10µA on the ADJ pin, which adds a constant offset to the output voltage. It features output current limiting (typically 20mA) and internal junction temperature limiting to protect the device and the load under fault conditions. The output voltage tolerance is 5%, and the typical ADJ current is 10µA, ensuring reliable and predictable performance.
Key Features:
- 5% output voltage tolerance
- Adjustable output from 1.2V to 440V (with input at least 12V higher)
- Output current limiting (typically 20mA)
- Internal junction temperature limiting (minimum 125°C)
- Typical ADJ pin current of 10µA
- Wide input voltage range: 13.2V to 450V
- Surface-mount TO-243AA (SOT-89) package with 3 pins
- Operating temperature range: -40°C to 85°C
This regulator is ideal for designs requiring a simple, robust, high-voltage adjustable power solution with minimal external components. Its built-in protections make it a reliable choice for demanding environments. Specifications include an output voltage range of 1.2V to 440V, input voltage range of 13.2V to 450V, and a maximum output current of 20mA.
Please note: This is a component only; external resistors are required to set the output voltage. The product weighs 0.2 grams.
- Industrial applications
- Motor drive control
- Power management
- High-voltage power supplies
- Output Type: Adjustable
- No. of Outputs: 1
- Output Voltage Min: 1.2V
- Output Voltage Max: 440V
- Input Voltage Min: 13.2V
- Input Voltage Max: 450V
- Max Output Current: 20mA
- IC Case / Package: TO-243AA (SOT-89)
- No. of Pins: 3
- IC Mounting: Surface Mount
- Operating Temperature Min: -40°C
- Operating Temperature Max: 85°C
- Output Voltage Tolerance: 5%
- Typical ADJ Pin Current: 10µA
- Internal Constant Bias Current: 10µA
- Output Current Limiting: Typical 20mA
- Temperature Limiting: Minimum 125°C
- Weight: 0.2 grams
- Height: 43 mm
- Width: 33 mm
- Depth: 15 mm
- Type: Adjustable
- of Outputs: 1Outputs
- Output Current Max: 20mA
- of Pins: 3Pins
- SVHC: No SVHC (04-Feb-2026)
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