Microchip LR12K4-G
Manufacturer No:
LR12K4-G
Manufacturer:
Microchip
Package:
TO-252-3, DPak (2 Leads + Tab), SC-63
Description:
HIGH INPUT VOLTAGE ADJUSTABLE 3-TERMINAL LINEAR REGULATOR
Quantity:
In Stock :3850
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Shipped from：HK Warehouse
Expected Shipping：Sun, May 31 - Mon, Jun 1, 2026
Lead Time：Inquire about availability
Date Code：Within 2 Years
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DELIVERY TIME1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.
LR12K4-G Information
Microchip LR12K4-G technical specifications, attributes, parameters and parts with similar specifications to Microchip LR12K4-G.
- Type
- Parameter
- +Vin min (V)
- 13.2
- +Vin max (V)
- 100
- Vout min (V)
- 1.2
- Vout max (V)
- 88
- Output Current (mA)
- 50
- Dimming
- N/A
- Parallelable
- N/A
- Package
- 8-Ld SOIC, TO-92, TO-252
- Features
- Adj. Output, Current Limiting, OTP
- Type
- Parameter
Download datasheets and manufacturer documentation for Microchip LR12K4-G.
Miscellaneous:
Data Sheets:
Application Notes:
LR12 is a high voltage, low output current, adjustable linear regulator. It has a wide operating input voltage range of 13.2 - 100V. The output voltage can be adjusted from 1.20 - 88V, provided that the input voltage is at least 12V greater than the output voltage. The output voltage can be adjusted by means of two external resistors R1 and R2 as shown in the typical application circuits. The LR12 regulates the voltage difference between VOUT and ADJ pins to a nominal value of 1.20V. The 1.20V is amplified by the external resistor ratio R1 and R2. An internal constant bias current of typically 10µA is connected to the ADJ pin. This increases VOUT by a constant voltage of 10µA times R2.
The LR12 has current limiting and temperature limiting. The output current limit is 100mA maximum and the minimum temperature limit is 125°C. An output short circuit current will therefore be limited to 100mA maximum. When the junction temperature reaches its temperature limit, the output current and/or output voltage will decrease to keep the junction temperature from exceeding its temperature limit. For SMPS start-up circuit applications, the LR12 turns off when an external voltage greater than the output voltage of the LR12 is applied to VOUT of the LR12. To maintain stability, a bypass capacitor of 100nF or larger and a minimum DC output current of 500µA are required.
- 13.2 to 100V input voltage range
- Stable with 100nF output capacitor
- Adjustable 1.20 to 88V output regulation
- 5% reference voltage tolerance
- Output current limiting, 50mA min.
- 10µA typical ADJ current
- Over temperature protection
- Available in 3 different packages
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12.28 M
Listed Part Number
3,000+
Leading Manufacturers
4.9 M
In-stock SKU
15,000+
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