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AMS1117-ADJ SOT-89
Public Made by Adomby adom
Slkor SLKORMICRO Elec Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AMS1117-ADJ SOT-89
Slkor SLKORMICRO Elec · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
AMS1117-ADJ SOT-89 from Slkor SLKORMICRO Elec, in a SOT-89-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADJ | input | Adjust pin on the ADJ version: the 1.25V VREF appears between VOUT and ADJ, set with R1/R2 divider (VOUT = VREF(1+R2/R1)+IADJ×R2), with adjust pin current of 50 µA typ and 120 µA max; the pin is labeled ADJ/GND and is the ground reference on fixed versions. |
| 2 | VOUT | power_out | Regulated output delivering up to 0.8A, needing an output capacitor to GND of at least 10µF tantalum with ESR not exceeding 0.5 Ω for stability; the package tab is also connected to the output. |
| 3 | VIN | power_in | Input supply pin with a maximum input voltage of 18V; a 10µF tantalum input bypass capacitor is recommended. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reference voltage | VREF | 1.225 | 1.25 | 1.275 | V | VIN=Vout+2V, 10mA≤IOUT≤0.8A | 3 |
| Dropout voltage | 1.3 | 1.4 | V | VREF= 1%, IOUT=0.8A | 3 | ||
| Line regulation | 0.15 | 0.3 | % | (VOUT+ 1.5V)≤VIN≤12V, IOUT= 10mA | 3 | ||
| Load regulation | 0.2 | 0.5 | % | (VIN-VOUT) = 2V, 10mA≤ IOUT≤0.8A | 3 | ||
| Adjust pin current | 50 | 120 | uA | 1.5V≤ (VIN-VOUT)≤7V, 10mA≤IOUT≤0.8A | 3 | ||
| Minimum load current | 3 | 10 | mA | 1.5V≤(VIN-VOUT)≤12V | 3 | ||
| Quiescent current | 3 | 10 | mA | VIN= VOUT+1.25V | 3 | ||
| Ripple rejection | 60 | 70 | dB | f = 120Hz, Cout= 22uF Tantalum, (VIN-VOUT) = 3V, Iout=0.8A | 3 | ||
| Thermal regulation | 0.008 | 0.04 | %/W | TA= 25℃, 30ms pulse | 3 | ||
| Long-term stability | 0.3 | 1 | % | TA= 125℃, 1000hrs. | 3 | ||
| Input Voltage | VIN | 18 | V | 2 | |||
| Operating Junction Temperature Range | TJ | -40 | 125 | ℃ | 2 | ||
| Thermal Resistance (SOT89) | θJA | 225 | ℃/W | 2 | |||
| Maximum Power Dissipation (SOT89) | PD | 400 | mW | 2 | |||
| Thermal resistance, junction to case (SOT89) | 20 | ℃/W | 3 |
CAD (KiCad official)
- Symbol:
AMS1117-ADJ SOT-89 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
ams1117-adj-sot-89-etched.step/ams1117-adj-sot-89-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ams1117-adj-sot-89.step/ams1117-adj-sot-89.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Slkor SLKORMICRO Elec datasheet (9 pp, sha256
cbfce94940091e66, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# AMS1117-ADJ SOT-89
**Slkor SLKORMICRO Elec** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3
AMS1117-ADJ SOT-89 from Slkor SLKORMICRO Elec, in a SOT-89-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | ADJ | input | Adjust pin on the ADJ version: the 1.25V VREF appears between VOUT and ADJ, set with R1/R2 divider (VOUT = VREF(1+R2/R1)+IADJ×R2), with adjust pin current of 50 µA typ and 120 µA max; the pin is labeled ADJ/GND and is the ground reference on fixed versions. |
| 2 | VOUT | power_out | Regulated output delivering up to 0.8A, needing an output capacitor to GND of at least 10µF tantalum with ESR not exceeding 0.5 Ω for stability; the package tab is also connected to the output. |
| 3 | VIN | power_in | Input supply pin with a maximum input voltage of 18V; a 10µF tantalum input bypass capacitor is recommended. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Slkor SLKORMICRO Elec |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reference voltage | VREF | 1.225 | 1.25 | 1.275 | V | VIN=Vout+2V, 10mA≤IOUT≤0.8A | 3 |
| Dropout voltage | | | 1.3 | 1.4 | V | VREF= 1%, IOUT=0.8A | 3 |
| Line regulation | | | 0.15 | 0.3 | % | (VOUT+ 1.5V)≤VIN≤12V, IOUT= 10mA | 3 |
| Load regulation | | | 0.2 | 0.5 | % | (VIN-VOUT) = 2V, 10mA≤ IOUT≤0.8A | 3 |
| Adjust pin current | | | 50 | 120 | uA | 1.5V≤ (VIN-VOUT)≤7V, 10mA≤IOUT≤0.8A | 3 |
| Minimum load current | | | 3 | 10 | mA | 1.5V≤(VIN-VOUT)≤12V | 3 |
| Quiescent current | | | 3 | 10 | mA | VIN= VOUT+1.25V | 3 |
| Ripple rejection | | 60 | 70 | | dB | f = 120Hz, Cout= 22uF Tantalum, (VIN-VOUT) = 3V, Iout=0.8A | 3 |
| Thermal regulation | | | 0.008 | 0.04 | %/W | TA= 25℃, 30ms pulse | 3 |
| Long-term stability | | | 0.3 | 1 | % | TA= 125℃, 1000hrs. | 3 |
| Input Voltage | VIN | | | 18 | V | | 2 |
| Operating Junction Temperature Range | TJ | -40 | | 125 | ℃ | | 2 |
| Thermal Resistance (SOT89) | θJA | | | 225 | ℃/W | | 2 |
| Maximum Power Dissipation (SOT89) | PD | | | 400 | mW | | 2 |
| Thermal resistance, junction to case (SOT89) | | | 20 | | ℃/W | | 3 |
## CAD (KiCad official)
- Symbol: `AMS1117-ADJ SOT-89`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files: `ams1117-adj-sot-89-etched.step` / `ams1117-adj-sot-89-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ams1117-adj-sot-89.step` / `ams1117-adj-sot-89.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Slkor SLKORMICRO Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588902996411760640) (9 pp, sha256 `cbfce94940091e66`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/ams1117-adj-sot-89-datasheet.pdf)