component
REG101NA-3.3
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. 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
markdownREG101NA-3.3
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5
REG101NA-3.3 from Texas Instruments, in a SOT-23-5. 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 | VIN | power_in | Supply input with an operating range of 1.8V to 10V (absolute maximum 12V). |
| 2 | GND | power_in | Ground pin. |
| 3 | Enable | input | Enable input, where 1.8V to VIN enables the output and -0.2V to 0.5V disables it (absolute maximum -0.3V to VIN). |
| 4 | NR/Adjust | passive | On fixed-voltage models such as REG101NA-3.3 this is the noise reduction capacitor pin (CNR = 0.01µF used in the specifications), with an absolute maximum of -0.3V to 6.0V. |
| 5 | VOUT | power_out | Regulated output, fixed at 3.3V for this model, with 100mA rated load current and a typical current limit of 170mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Accuracy | -1.5 | 1.5 | % | 3 | |||
| Accuracy over temperature | -2.2 | 2.2 | % | Over Temperature | 3 | ||
| Output voltage accuracy including line and load | -2 | 2 | % | Includes Line and Load IOUT = 2mA to 100mA, VIN = (VOUT + 0.4V) to 10V | 3 | ||
| Output voltage accuracy over temperature line and load | -2.7 | 2.7 | % | Over Temperature VIN = (VOUT + 0.6V) to 10V | 3 | ||
| DC dropout voltage | VDROP | 4 | 10 | mV | IOUT = 2mA | 3 | |
| DC dropout voltage | VDROP | 60 | 100 | mV | For all models IOUT = 100mA | 3 | |
| DC dropout voltage over temperature | VDROP | 130 | mV | Over Temperature IOUT = 100mA | 3 | ||
| Current limit | ICL | 130 | 170 | 220 | mA | 3 | |
| Current limit over temperature | ICL | 110 | 240 | mA | Over Temperature | 3 | |
| Ground pin current | IGND | 400 | 500 | µA | IOUT = 2mA | 3 | |
| Ground pin current | IGND | 500 | 650 | µA | IOUT = 100mA | 3 | |
| Enable pin low ground pin current | 0.01 | 0.2 | µA | VENABLE ≤ 0.5V | 3 | ||
| VENABLE low (output disabled) | VENABLE | -0.2 | 0.5 | V | VENABLE Low (output disabled) | 3 | |
| VENABLE high (output enabled) | VENABLE | 1.8 | V | VENABLE High (output enabled) | 3 | ||
| IENABLE high (output enabled) | IENABLE | 1 | 100 | nA | VENABLE = 1.8V to VIN, VIN = 1.8V to 6.5(4) | 3 | |
| IENABLE low (output disabled) | IENABLE | 2 | 100 | nA | VENABLE = 0V to 0.5V | 3 | |
| Operating input voltage range | VIN | 1.8 | 10 | V | Operating Input Voltage Range(5) | 3 | |
| Specified input voltage range | VIN | 10 | V | VIN > 1.8V VOUT + 0.4 | 3 | ||
| Specified input voltage range over temperature | VIN | 10 | V | Over Temperature VIN > 1.8V VOUT + 0.6 | 3 | ||
| Specified temperature range | TJ | -40 | 85 | °C | Specified Range | 3 | |
| Operating temperature range | TJ | -55 | 125 | °C | Operating Range | 3 | |
| Storage temperature range | TA | -65 | 150 | °C | Storage Range | 3 | |
| Thermal shutdown junction temperature | 160 | °C | Shutdown | 3 | |||
| Thermal shutdown reset junction temperature | 140 | °C | Reset from Shutdown | 3 | |||
| Thermal resistance junction-to-ambient SOT23-5 | θJA | 200 | °C/W | SOT23-5 Surface Mount Junction-to-Ambient | 3 | ||
| Output voltage | VOUT | 3.3 | V | REG101-3.3 | 3 | ||
| Reference voltage | VREF | 1.267 | V | 3 | |||
| Output voltage temperature coefficient | dVOUT/dT | 50 | ppm/°C | vs Temperature | 3 | ||
| Short-circuit current | ISC | 60 | mA | 3 | |||
| Ripple rejection | 65 | dB | f = 120Hz IOUT = 100mA | 3 | |||
| Output disable time | 200 | µs | COUT = 1.0µF, RLOAD = 33Ω | 3 | |||
| Output enable time | 1.5 | ms | COUT = 1.0µF, RLOAD = 33Ω | 3 | |||
| Supply input voltage | VIN | -0.3 | 12 | V | 2 | ||
| Enable input voltage | VEN | -0.3 | V | VIN | 2 | ||
| Feedback voltage | VFB | -0.3 | 6 | V | 2 | ||
| NR pin voltage | VNR | -0.3 | 6 | V | 2 | ||
| Operating temperature range junction | TJ | -55 | 125 | °C | 2 | ||
| Storage temperature range | TA | -65 | 150 | °C | 2 | ||
| Lead temperature soldering | 240 | °C | soldering, 3s, SOT23-5, and SO-8 | 2 |
CAD (KiCad official)
- Symbol:
REG101NA-3.3 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
reg101na-3-3-etched.step/reg101na-3-3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);reg101na-3-3.step/reg101na-3-3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (25 pp, sha256
4b1eaa2d39ccb308, retrieved 2026-11-05, tier: manufacturer) - 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).