Technical Specifications
Parameters and characteristics for this part
| Specification | LD1085D2M33R |
|---|---|
| Current - Output | 3 A |
| Current - Quiescent (Iq) | 10 mA |
| Mounting Type | Surface Mount |
| Number of Regulators | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | 1.81 mOhm |
| Package / Case | TO-263AA, D2PAK (3 Leads + Tab), TO-263-4 |
| Protection Features | Over Current, Over Temperature |
| PSRR | 72 dB |
| Supplier Device Package | D2PAK-3 |
| Voltage - Input (Max) [Max] | 30 V |
| Voltage - Output (Min/Fixed) | 3.3 V |
| Voltage Dropout (Max) [Max] | 1.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 2.87 | |
| 10 | $ 1.86 | |||
| 25 | $ 1.60 | |||
| 100 | $ 1.30 | |||
| 250 | $ 1.15 | |||
| 500 | $ 1.06 | |||
| Digi-Reel® | 1 | $ 2.87 | ||
| 10 | $ 1.86 | |||
| 25 | $ 1.60 | |||
| 100 | $ 1.30 | |||
| 250 | $ 1.15 | |||
| 500 | $ 1.06 | |||
| Tape & Reel (TR) | 1000 | $ 0.99 | ||
| 2000 | $ 0.93 | |||
| 3000 | $ 0.90 | |||
| 5000 | $ 0.86 | |||
| 7000 | $ 0.84 | |||
| 10000 | $ 0.82 | |||
| Newark | Each (Supplied on Cut Tape) | 1 | $ 1.94 | |
| 10 | $ 1.48 | |||
| 25 | $ 1.37 | |||
| 50 | $ 1.30 | |||
| 100 | $ 1.24 | |||
| 250 | $ 1.18 | |||
| 500 | $ 1.15 | |||
Description
General part information
LD1085 Series
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.
Documents
Technical documentation and resources