LR8N3-G Power Management ICs - PMIC by Microchip Technology

High Voltage Adjustable 3-Terminal Linear Regulator, 450V


LR8 is a high voltage, low output current, adjustable linear regulator. It has a wide operating input voltage range of 13.2 - 450V. The output voltage can be adjusted from 1.20 - 440V 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 LR8 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 LR8 has current limiting and temperature limiting. The output current limit is typically 20mA and the minimum temperature limit is 125°C. An output short circuit current will therefore be limited to 20mA. 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 LR8 turns off when an external voltage greater than the output voltage of the LR8 is applied to VOUT of the LR8. To maintain stability, a bypass capacitor of 1.0µF or larger and a minimum DC output current of 500µA are required. The device is available in TO-243AA (SOT-89), TO-252 (D-PAK), and TO-92 packages.

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Prices starting from US$0.51

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Features

13.2 - 450V input voltage range
Adjustable 1.20 - 440V output regulation
5% output voltage tolerance
Output current limiting
10µA typical ADJ current
Internal junction temperature limiting

Specifications

+Vin min (V) 13.2
+Vin max (V) 450
Vout min (V) 1.2
Vout max (V) 440
Output Current (mA) 10
Dimming N/A
Parallelable N/A
Package SOT-89, TO-92, TO-252
Features Adj. Output, Overcurrent Limiting, OTP
Pins | Packaging 3 | TO-92
Temp Range -40C to +125C
Packing Media Bag (1000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.2034
Shipping Weight (kg) 0.219
Lead Count 3
Package Type TO-92
Soldering Composition Matte Tin

Alternative Descriptions

Linear Volt Reg, 0.02A, 440V, To-92-3 | Newark Electronics
LINEAR VOLT REG, 0.02A, 440V, TO-92-3 | element14
HIGH VOLTAGE ADJUSTABLE 3-TERMINAL LINEAR REGULAR, 450V | Future Electronics
Adj Linear Reg, 1.2V-440V, 10mA, TO-92 | RS
IC: voltage regulator | Transfer Multisort Elektronik
Standard Regulator Pos 1.2V to 440V 0.03A 3-Pin TO-92 Bag | Avnet America
3 TO-92 BAGHIGH VOLTAGE ADJUSTABLE 3-TERMINAL LINEAR REGULAR, 450V | Microchip Technology Inc. LR8N3-G | RS Americas


Frequently Asked Questions

Where can I find additional details, specifications and documents for a LR8N3-G?

Additional datasheets, footprints and schematics for LR8N3-G are listed on our Part Details page. You can also find images and similar parts to LR8N3-G on this page.

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What category does LR8N3-G fall under?

The LR8N3-G is listed under Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators > Linear Voltage Regulators.

Can I view similar or alternative parts?

You can view similar parts to LR8N3-G when available in the Linear Voltage Regulators range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the LR8N3-G you can contact the distributor directly for product support, shipping queries etc.

Is the LR8N3-G RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

Which authorised distributors for LR8N3-G have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Future Electronics and Microchip Technology have stock available or on a lead time for LR8N3-G.

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