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LR12

High Input Voltage Adjustable 3-Terminal Linear Regulator

Status: In Production

Features:

  • 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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Overview
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RoHS Information
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Device Overview

Summary

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.

Additional Features
  • 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
Parametrics
Name
Value
+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

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
LR12K4-G
1.420000
0.501000
3
DPAK
-
Matte Tin
e3
LR12LG-G
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
LR12N3-G
0.203400
0.219000
3
TO-92
-
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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