component
XC6221B122MR
Public Made by Adomby adom
Torex Semicon Linear Voltage Regulators (LDO), SOT-25-5. 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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Contents
README
markdownXC6221B122MR
Torex Semicon · Linear Voltage Regulators (LDO) · SOT-25-5
XC6221B122MR from Torex Semicon, in a SOT-25-5. 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 | Power input; operating input voltage range 1.6V to 6.0V (absolute maximum VSS-0.3V to +6.5V), with a 1.0μF input capacitor recommended between VIN and VSS. |
| 2 | VSS | power_in | Ground pin of the regulator. |
| 3 | CE | input | ON/OFF control, active high: VCE of 1.2V to 6.0V turns the IC on and VCE of 0.3V or less puts it in standby; for XC6221A/B the output is unstable if the pin is left open. |
| 4 | NC | unconnected | No connection. |
| 5 | VOUT | power_out | Regulated output (1.22V nominal for XC6221B122); up to 200mA output current, requires an output capacitor CL of 4.7μF or more for 0.80V to 1.15V and 2.2μF or more for 1.20V to 1.35V, with CL auto-discharge (XC6221B) via about 780Ω when CE is low. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | SOT-25-5 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage (Standard, effective) | VOUT(E) | 1.17 | 1.23 | V | VOUT(T)<1.45V, VCE=VIN, IOUT=10mA (VOUT(T)-0.03 to +0.03) | 6 | |
| Maximum Output Current | IOUTMAX | 200 | 250 | mA | VCE=VIN, VIN=VOUT(T)+1.0V, 0.80V<VOUT(T)<5.00V | 5 | |
| Load Regulation | ΔVOUT | 10 | 40 | mV | VCE=VIN, 0.1mA≦IOUT≦100mA | 5 | |
| Dropout Voltage | Vdif | 230 | 410 | mV | VCE=VIN, IOUT=100mA, VOUT=1.20V | 6 | |
| Supply Current | IDD | 25 | 50 | μA | VCE=VIN, VIN=VOUT(T)+1.0V | 5 | |
| Standby Current | ISTB | 0.01 | 0.1 | μA | VIN=6.0V, VCE=VSS | 5 | |
| Line Regulation | ΔVOUT/(ΔVIN·VOUT) | 0.01 | 0.2 | %/V | VOUT(T)+0.5V≦VIN≦6.0V, 1.10V≦VOUT(T), VCE=VIN, IOUT=10mA | 5 | |
| Input Voltage | VIN | 1.6 | 6 | V | 5 | ||
| Limit Current | ILIM | 200 | 250 | mA | VCE=VIN | 5 | |
| CE High Level Voltage | VCEH | 1.2 | 6 | V | 5 | ||
| CE Low Level Voltage | VCEL | 0.3 | V | 5 | |||
| CE High Level Current | ICEH | -0.1 | 0.1 | μA | VCE=VIN (XC6221A/B) | 5 | |
| CE Low Level Current | ICEL | -0.1 | 0.1 | μA | VCE=VSS | 5 | |
| Input Voltage (absolute maximum) | VIN | -0.3 | 6.5 | V | VSS -0.3 ~ +6.5, Ta=25℃ | 4 | |
| Output Current (absolute maximum) | IOUT | 400 | mA | IOUT≦Pd/(VIN-VOUT), Ta=25℃ | 4 | ||
| CE Input Voltage (absolute maximum) | VCE | -0.3 | 6.5 | V | VSS, 0.3 ~ +6.5, Ta=25℃ | 4 | |
| Power Dissipation SOT-25 | Pd | 250 | mW | SOT-25, Ta=25℃ (600 mW PCB mounted) | 4 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | Ta=25℃ | 4 | |
| Storage Temperature | Tstg | -55 | 125 | ℃ | Ta=25℃ | 4 | |
| Output Capacitor | CL | 2.2 | μF | 1.20V~1.35V output, except USPN-4 | 8 | ||
| Thermal Resistance SOT-25 | 166.67 | ℃/W | Board mount, Tj max=125℃ | 22 | |||
| Output Voltage Temperature Characteristics | ΔVOUT/(ΔTopr·VOUT) | 100 | ppm/℃ | VCE=VIN, IOUT=30mA, -40℃<Topr<85℃ (printed ±100) | 5 | ||
| Ripple Rejection Rate | PSRR | 70 | dB | VIN={VOUT(T)+1.0}VDC+0.5Vp-pAC, 0.85V≦VOUT(T)≦4.00V, VCE=VIN, IOUT=30mA, f=1kHz | 5 | ||
| Short Current | ISHORT | 30 | mA | VCE=VIN, VOUT is short-circuited at the VSS level | 5 | ||
| CL Auto-Discharge Resistance | RDCHG | 780 | Ω | VIN=6.0V, VOUT=4.0V, VCE=VSS | 5 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | The USPN-4 package has for terminals. Each terminal connects one copper block in the front and | 24 |
CAD (KiCad official)
- Symbol:
XC6221B122MR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25-5 (KiCad packages3D, STEP)
- 3D model files:
xc6221b122mr-etched.step/xc6221b122mr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc6221b122mr.step/xc6221b122mr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Torex Semicon datasheet (28 pp, sha256
fad304475b2de3b6, retrieved 2026-10-26, 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).