-
The LD1117 is a low drop voltage regulator able to provide up to 800 mA of output current, available even in adjustable version (VREF= 1.25 V). Concerning fixed versions, are offered the following output voltages: 1.2 V, 1.8 V, 2.5 V, 2.85 V, 3.3 V and 5.0 V. The device is supplied in: SOT-223, DPAK, SO-8 and TO-220. The SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the quiescent current flows mostly into the load. Only a very common 10 μF minimum capacitor is needed for stability. On chip trimming allows the regulator to reach a very tight output voltage tolerance, within ± 1 % at 25 °C. The adjustable LD1117 is pin to pin compatible with the other standard. Adjustable voltage regulators maintaining the better performances in terms of drop and tolerance.
Key Features
- Low dropout voltage (1 V typ.)
- 2.85 V device performances are suitable for SCSI-2 active termination
- Output current up to 800 mA
- Fixed output voltage of: 1.2 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V
- Adjustable version availability (VREF= 1.25 V)
- Internal current and thermal limit
- Available in ± 1 % (at 25 °C) and 2 % in full temperature range
- Supply voltage rejection: 75 dB (typ.)
Featured Videos
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| LD1117D33CTR |
Active
|
SO-8 | Industrial | Ecopack2 | |
| LD1117D33TR |
Active
|
SO-8 | Industrial | Ecopack2 | |
| LD1117DT12CTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT12TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT18CTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT18TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT25CTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT25TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT33CTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT33TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT50CTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DT50TR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DTC-R |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117DTTR |
Active
|
DPAK | Industrial | Ecopack2 | |
| LD1117S12CTR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S12TR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S18CTR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S18TR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S25CTR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S25TR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S33CTR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S33TR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S50CTR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117S50TR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117SC-R |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117STR |
Active
|
SOT-223 | Industrial | Ecopack2 | |
| LD1117V |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LD1117V18 |
Active
|
TO-220 | Industrial | Ecopack2 | |
| LD1117V33 |
Active
|
TO-220 | Industrial | Ecopack2 | |
| LD1117V33-DG |
Active
|
TO-220 | Industrial | Ecopack1 (*) | |
| LD1117V33C |
Active
|
TO-220 | Industrial | Ecopack2 | |
| LD1117V50 |
Active
|
TO-220 | Industrial | Ecopack2 |
|
| LD1117V50C |
Active
|
TO-220 | Industrial | Ecopack2 |
|
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| LD1117DT50TR | 7 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.155 / 1k | |
| LD1117D33TR | 8 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SO-8 | 0 | 125 | CHINA | 0.194 / 1k | |
| LD1117D33CTR | 6 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SO-8 | 0 | 125 | CHINA | 0.163 / 1k | |
| LD1117DT18TR | 5 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.155 / 1k | |
| LD1117DT33TR | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.155 / 1k | |
| LD1117S50TR | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117S18CTR | 8 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117S12CTR | 11 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117STR | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117S25CTR | 9 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117DT33CTR | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.155 / 1k | |
| LD1117DT50CTR | 10 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.155 / 1k | |
| LD1117DT12CTR | 4 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | DPAK | 0 | 125 | CHINA | 0.161 / 1k | |
| LD1117S25TR | 8 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117V33-DG | 3 distributors | Buy now |
Active
|
EAR99 | NEC | Tube | TO-220 | 0 | 125 | CHINA | 0.305 / 1k | |
| LD1117S33CTR | 12 distributors | Buy now |
Active
|
EAR99 | NEC | Tape And Reel | SOT-223 | 0 | 125 | CHINA | 0.149 / 1k | |
| LD1117V33 | 12 distributors | |||||||||||