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KMA1117-3.3V
Public Made by Adomby adom
KEXIN Linear Voltage Regulators (LDO), SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownKMA1117-3.3V
KEXIN · Linear Voltage Regulators (LDO) · SOT-89-3
KMA1117-3.3V from KEXIN, 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 | GND | power_in | Ground reference for the fixed 3.3V version (labelled Adj(GND), the adjust pin on the ADJ version). |
| 2 | VOUT | power_out | Regulated 3.3V output (3.235 to 3.365V at 10mA, 25°C) with 1A current limit and 1.4V maximum dropout at full load. |
| 3 | VIN | power_in | Input supply, absolute maximum -0.3 to 12V, with 4.8V to 12V specified for the 3.3V version. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEXIN |
| Package | SOT-89-3 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage | VOUT | 3.235 | 3.3 | 3.365 | V | IOUT = 10mA, TJ = 25, 4.8V ≤ VIN ≤ 12V | 2 |
| Line Regulation | 0.2 | % | IO=10mA,VOUT+1.5V ≤ VIN ≤ 12V, TJ=25 | 2 | |||
| Load Regulation | 26 | 33 | mV | VIN=5V,0mA ≤ Io ≤ 1A,TJ=25 | 2 | ||
| Dropout Voltage (VIN-VOUT) | 1.3 | 1.4 | V | IOUT = 1A , ΔVOUT=0.1%VOUT | 2 | ||
| Current Limit | 1 | A | (VIN-VOUT) = 5V | 2 | |||
| Minimum Load Current | 5 | 10 | mA | 0 ≤ Tj ≤ 125 | 2 | ||
| Thermal Regulation | 0.008 | 0.04 | %/W | TA=25, 30ms pulse | 2 | ||
| Ripple Rejection | 60 | 70 | dB | F=120Hz,COUT=25uF Tantalum, IOUT=1A, VIN=VOUT+3V | 2 | ||
| Temperature Stability | 0.5 | % | IO=10mA | 2 | |||
| DC Supply Voltage | Vin | -0.3 | 12 | V | Ta = 25 | 1 | |
| Operating Junction Temperature Range | TOP | 0 | 150 | °C | 1 | ||
| Storage Temperature | TST | -65 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Ambient | θJA | 300 | °C/W | 1 | |||
| Thermal Resistance Junction-to-Case | θJC | 100 | °C/W | Control Circuitry/Power Transistor | 1 |
CAD (KiCad official)
- Symbol:
KMA1117-3.3V - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
kma1117-3-3v-etched.step/kma1117-3-3v-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kma1117-3-3v.step/kma1117-3-3v.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEXIN datasheet (3 pp, sha256
40249197d3934d98, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-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).