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CBM1117DT-3.3
Public Made by Adomby adom
Corebai Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. 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
markdownCBM1117DT-3.3
Corebai Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2
CBM1117DT-3.3 from Corebai Microelectronics, in a TO-252-2. 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 pin for the fixed-output option (ADJ adjustment pin on the adjustable option), so on the 3.3V part it is the ground reference. |
| 2 | OUTPUT | power_out | Regulator output voltage pin (3.3V fixed, IO 10mA to 1.0A), needing an output capacitor to ground, with the metal tab electrically connected to Vout. |
| 3 | INPUT | power_in | Regulator input voltage pin, maximum 15V, with 4.8V to 12.0V specified for the 3.3V output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | TO-252-2 |
| 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 (CBM1117X-3.3) | 3.24 | 3.3 | 3.36 | V | IO = 10mA to 1.0A, VIN = 4.8 to 12.0V | 5 | |
| Line regulation (CBM1117X-3.3) | 3 | 7 | mV | IO = 10mA, VIN = 4.8 to 12.0V | 5 | ||
| Load regulation (CBM1117X-3.3) | 4 | 12 | mV | IO = 10mA to 1.0A, VIN = 5.3V | 5 | ||
| Dropout voltage (25 C) | 1.2 | 1.3 | V | IO = 1A, Tj = 25C (all modes) | 5 | ||
| Dropout voltage (full junction temperature range) | 1.2 | 1.55 | V | IO = 1A, Tj = -40C to +125C | 5 | ||
| Quiescent current | 5.2 | 10 | mA | VIN - VO = 1.5V | 6 | ||
| Adjust pin current vs load (IO = 10 mA) | 50 | 120 | uA | IO = 10mA, VIN - VO = 1.4 to 10V | 6 | ||
| Adjust pin current change (IO = 10 mA to 1 A) | 0.5 | 5 | uA | IO = 10mA to 1A, VIN - VO = 1.4 to 10V | 6 | ||
| Ripple rejection | 60 | 72 | dB | 120Hz input ripple, VIN - VO = 5V, IO = 1.0A, TJ = -40C to +125C | 6 | ||
| Input voltage (absolute maximum) | VIN | 15 | V | 4 | |||
| Operating junction temperature range | TJ | -40 | 125 | ℃ | Operating junction temperature range for CBM1117X-DT (footnote 0 to 150 applies only to CBM1117X-1.2) | 4 | |
| Thermal resistance, junction to ambient (TO-252) | θJA | 80 | ℃/W | Silicon junction to air, TO-252 | 4 | ||
| Thermal resistance, junction to case (TO-252) | θJC | 22 | ℃/W | Chip to frame (case) surface, TO-252 | 4 | ||
| Current limit | 1000 | mA | VIN - VO = 5V, Tj = 25C | 6 | |||
| Minimum load current | 5 | mA | VIN = 13.75V | 6 | |||
| Temperature drift (output voltage) | 0.5 | % | TJ = -40C to +125C | 6 | |||
| RMS output noise | 0.003 | %Vo | 25C, 10Hz to 10kHz bandwidth | 6 |
CAD (KiCad official)
- Symbol:
CBM1117DT-3.3 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2 (KiCad packages3D, STEP)
- 3D model files:
cbm1117dt-3-3-etched.step/cbm1117dt-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cbm1117dt-3-3.step/cbm1117dt-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Corebai Microelectronics datasheet (15 pp, sha256
34a1b522e8f4fd2c, retrieved 2026-10-18, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).