component
XC6121E523MR-G
Public Made by Adomby adom
Torex Semicon Supervisor And Reset ICs, SOT-25. 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
markdownXC6121E523MR-G
Torex Semicon · Supervisor And Reset ICs · SOT-25
XC6121E523MR-G from Torex Semicon, in a SOT-25. 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 | RESETB | output | Reset output (N-channel open drain, active low when voltage is detected); max output current 20 mA and voltage VSS-0.3 to 7.0 V. |
| 2 | VSS | power_in | Ground pin. |
| 3 | EN/ENB | input | Watchdog ON/OFF control; on the XC6121 (EN) the watchdog is on when EN is high (>=1.3V) and forced off when low (<=0.35V), with no internal pull-up, rated VSS-0.3 to VIN+0.3 V. |
| 4 | WD | input | Watchdog input with internal pull-down (300-900 kΩ); high level is VIN x 0.7 or more, low level is VIN x 0.3 or less, minimum pulse width 300 ns, rated VSS-0.3 to 7.0 V. |
| 5 | VIN | power_in | Power input; operating voltage range 1.0 V to 6.0 V, absolute maximum 7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | SOT-25 |
| 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 |
|---|---|---|---|---|---|---|---|
| Detect Voltage | VDFL | 0.98 | 1.02 | × VDFL(T) | VEN=VSS; VDFL(T)=2.3V setting | 7 | |
| Hysteresis Width | VHYS | 0.02 | 0.05 | 0.08 | V | VEN=VSS; multiplier of VDFL | 7 |
| Supply Current | ISS | 5 | 11 | μA | WD=OPEN, VIN=VDFL(T)×0.9V | 7 | |
| Supply Current | ISS | 10 | 16 | μA | WD=OPEN, VIN=VDFL(T)×1.1V | 7 | |
| Supply Current | ISS | 12 | 18 | μA | WD=OPEN, VIN=6.0V | 7 | |
| Operating Voltage | VIN | 1 | 6 | V | 7 | ||
| Output Current (N-ch) | IRBOUT | 0.15 | 0.5 | mA | VDS=0.5V, VIN=1.0V | 7 | |
| Output Current (N-ch) | IRBOUT | 2 | 2.5 | mA | VDS=0.5V, VIN=2.0V (VDFL(T)>2.0V) | 7 | |
| Release Delay Time | tDR | 150 | 200 | 250 | ms | VIN increased from 1.0V to VDFL x 1.1V (VDFL>1.9V) | 7 |
| Detect Delay Time | tDF | 5.5 | 33 | μs | VIN decreased from 6.0V to 1.0V, WD pin open | 7 | |
| VDFL Leakage Current | ILEAK | 0.01 | 0.1 | μA | VIN=6.0V, VRESETB=6.0V | 7 | |
| Watchdog Timeout Period | tWD | 300 | 400 | 500 | ms | VIN increased from 1.0V to VDFLx1.1V (VDFL>1.9V), WD=OPEN | 7 |
| Watchdog Minimum Pulse Width | tWDIN | 300 | ns | VIN=6.0V, pulse from 6.0V to 0V on WD pin | 8 | ||
| Watchdog High Level Voltage | VWDH | 6 | V | VIN=VDFL x 1.1V ~ 6.0V; min printed as VIN x 0.7 | 8 | ||
| Watchdog Low Level Voltage | VWDL | 0 | V | VIN=VDFL x 1.1V ~ 6.0V; max printed as VIN x 0.3 | 8 | ||
| Watchdog Pull-down Resistance | RWD | 300 | 600 | 900 | kΩ | VWD=6V, RWD=VWD/IWD | 8 |
| EN High Level Voltage | VENH | 1.3 | V | VIN=VDFL x 1.1V ~ 6.0V; max printed as VIN | 8 | ||
| EN Low Level Voltage | VENL | 0 | 0.35 | V | VIN=VDFL x 1.1V ~ 6.0V | 8 | |
| Detect Voltage Temperature Characteristics | △VDFL/△Topr・VDFL | 100 | ppm/°C | -40°C < Topr < 85°C | 7 | ||
| Input Voltage | VIN | -0.3 | 7 | V | Ta=25°C; VSS -0.3 ~ 7.0 | 6 | |
| EN/ENB Voltage | VEN/VENB | -0.3 | 7 | V | Ta=25°C; VSS-0.3 ~ VIN+0.3 ≦ 7.0 | 6 | |
| WD Voltage | VWD | -0.3 | 7 | V | Ta=25°C; VSS -0.3 ~ 7.0 | 6 | |
| Output Current | IRBOUT | 20 | mA | Ta=25°C | 6 | ||
| Output Voltage | VRESETB | -0.3 | 7 | V | Ta=25°C; VSS -0.3 ~ 7.0 | 6 | |
| Power Dissipation SOT-25 | Pd | 250 | mW | Ta=25°C | 6 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | °C | Ta=25°C | 6 | |
| Storage Temperature | Tstg | -55 | 125 | °C | Ta=25°C | 6 |
CAD (KiCad official)
- Symbol:
XC6121E523MR-G - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25 (KiCad packages3D, STEP)
- 3D model files:
xc6121e523mr-g-etched.step/xc6121e523mr-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc6121e523mr-g.step/xc6121e523mr-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Torex Semicon datasheet (26 pp, sha256
8cd529697a754d22, 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).