STMicroelectronics LD1117ASTR Linear Controllers
Linear Voltage Regulator IC Positive Adjustable 1 Output 1A SOT-223
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LD1117ASTR
Detailed Description
IC REG LINEAR POS ADJ 1A SOT223
Package
TO-261-4, TO-261AA
Key Features
Package / Case: TO-261-4, TO-261AA; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
LD1117ASTR Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics LD1117ASTR Linear Controllers technical specifications.
General
RoHS
Yes
Package / Case
TO-261-4, TO-261AA
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 125°C
Lifecycle Status
Active
Output Type
Adjustable
Max Input Voltage
15V
Output Current
1A
Quiescent Current
5 mA
Output Configuration
Positive
Alternate Parts Comparison (LD1117ASTR vs LD1117S12CTR vs LD1117S18CTR vs LD1117S18TR)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | 0°C ~ 125°C |
| Lifecycle Status | Active | Active | Active | Active |
| Max Input Voltage | 15V | 15V | 15V | 15V |
| Number of Regulators | 1 | 1 | 1 | 1 |
| Output Configuration | Positive | Positive | Positive | Positive |
| Output Current | 1A | 800mA | 800mA | 800mA |
| Output Type | Adjustable | Fixed | Fixed | Fixed |
| Output Voltage | 1.25V | 1.2V | 1.8V | 1.8V |
| Protection Features | Over Current, Over Temperature | Over Current, Over Temperature | Over Current, Over Temperature | Over Current, Over Temperature |
| PSRR | 80dB (120Hz) | 75dB (120Hz) | 75dB (120Hz) | 75dB (120Hz) |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
NCP1117STAT3GonsemiDirectonsemi
Pin YesPkg YesElec Yes
LDO Regulator, 1A, Adj Vout, 1.25-18.8V, 1% Acc, SOT-223
More Parts in Voltage Regulators - Linear
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.