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3 A low drop positive voltage regulator: adjustable and fixed

Quantity $ per Unit Savings
1 - 9$2.040%
10 - 24$1.8211%
25 - 99$1.7215%
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In stock
Parameter NameParameter Value
Operating RangeAutomotive
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameD2PAK

The LD1085 is a low drop voltage regulator able to provide up to 3 A of output current. Dropout is guaranteed at a maximum of 1.2 V at the maximum output current, decreasing at lower loads. The LD1085 is pin-to-pin compatible with the older 3-terminal adjustable regulators, but offers better performance in terms of drop and output tolerance.

Unlike PNP regulators, where a part of the output current is wasted as quiescent current, the LD1085 quiescent current flows into the load, thus increase efficiency. Only a 10 μF minimum capacitor is need for stability.

The device is supplied in TO-220, TO-220FP, D²PAK and D²PAK/A packages. On-chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1% at 25 °C.

Key features
  • Typical dropout 1.3 V (at 3 A)
  • Three terminal adjustable or fixed output voltage 1.8 V, 2.5 V, 3.3 V, 5 V
  • Guaranteed output current up to 3 A
  • Output tolerance ± 1% at 25 °C and ± 2% in full temperature range
  • Internal power and thermal limit
  • Wide operating temperature range -40 °C to 125 °C
  • Package available: TO-220, TO-220FP, D²PAK, D²PAK/A
  • Pinout compatibility with standard adjustable VREG