component
KIA1117BF33-RTF
Public Made by Adomby adom
KEC Semicon Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DPAK. 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
markdownKIA1117BF33-RTF
KEC Semicon · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK
KIA1117BF33-RTF from KEC Semicon, in a DPAK. 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(Adj) | power_in | Ground/adjust pin; in the adjustable version it sets the output through VOUT = VREF x (1 + R2/R1) + IADJ x R2, with adjust pin current typically 35 uA. |
| 2 | OUTPUT | power_out | Regulated output providing up to 1 A, with short circuit current limit of 1.1 A minimum and a minimum 10 uF capacitor (ESR 1 mOhm to 200 Ohm) required for stability. |
| 3 | INPUT | power_in | Unregulated input supply with a maximum rating of 15 V, and a typical dropout voltage of 1.1 V at 1 A output current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| Package | DPAK |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (VIN=4.8V, IOUT=10mA) | VOUT1 | 3.234 | 3.3 | 3.366 | V | VIN=4.8V, IOUT=10mA | 2 |
| Output Voltage (10mA to 1A, 4.8V to 10V) | VOUT2 | 3.201 | 3.3 | 3.399 | V | 10mA IOUT 1A, 4.8V VIN 10V | 2 |
| Load Regulation | Reg Load | 0.5 | 1 | % | 10mA IOUT 1A, VIN=VOUT+2.0V | 2 | |
| Line Regulation | Reg Line | 1 | 10 | mV | VOUT+1.5V VIN 10V, IOUT=10mA | 2 | |
| Quiescent Current | IB1 | 5 | 10 | mA | VIN=VOUT+1.25V, IOUT=0A | 2 | |
| Short Circuit Current Limit | ISC | 1.1 | A | VIN=VOUT+2.0V | 2 | ||
| Ripple Rejection | RR | 60 | 80 | dB | IOUT=40mA, f=120Hz, Vripple=1Vp-p, VIN=VOUT+3V | 2 | |
| Dropout Voltage | VD | 1.1 | 1.4 | V | IOUT=1A | 2 | |
| Input Voltage | VIN | 15 | V | 1 | |||
| Output Current | IOUT | 1 | A | 1 | |||
| Power Dissipation 1 | PD1 | 1.3 | W | No heatsink, DPAK (F-type) package; mounted on FR-4 PCB per note | 1 | ||
| Power Dissipation 2 | PD2 | 13 | W | Infinite heatsink, DPAK (F-type) package | 1 | ||
| Maximum Junction Temperature | Tj(max) | 150 | °C | 1 | |||
| Operating Junction Temperature | Topr | -40 | 150 | °C | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | °C | 1 | ||
| Thermal Resistance Junction-to-Case | Rth(j-c) | 9.62 | °C/W | Infinite heatsink (TC=Ta), DPAK (F-type) | 5 | ||
| Thermal Resistance Junction-to-Ambient | Rth(j-a) | 96.2 | °C/W | No heatsink, DPAK (F-type) | 5 |
CAD (KiCad official)
- Symbol:
KIA1117BF33-RTF - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: DPAK (KiCad packages3D, STEP)
- 3D model files:
kia1117bf33-rtf-etched.step/kia1117bf33-rtf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);kia1117bf33-rtf.step/kia1117bf33-rtf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: KEC Semicon datasheet (7 pp, sha256
63fb9a022402fdaa, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).