component
XC6131A161MR-G
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Torex Semicon Supervisor And Reset ICs, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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PCB Footprint
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Datasheet
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README
markdownXC6131A161MR-G
Torex Semicon · Supervisor And Reset ICs · SOT-23-6
XC6131A161MR-G from Torex Semicon, in a SOT-23-6. 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 | WD | input | Watchdog input: an L→H pulse must arrive within the watchdog timeout time (tWD) or RESETB enters the detect state; pulse width is at least 100 ns, VWDH is VIN×0.7 to 6 V, VWDL is 0 to VIN×0.3 V, and the pin is internally pulled down to VSS (550 kΩ typ). |
| 2 | EN | input | Watchdog ON/OFF control for the XC6131A: setting EN to L turns off only the watchdog function while voltage detection continues; EN high is 1.3 V to VIN, EN low is 0 to 0.45 V, and the pin is internally pulled up to VIN (800 kΩ typ) so it can be left open. |
| 3 | VIN | power_in | Power input with an operating voltage of 1.5 V to 6.0 V; this pin is also monitored against the detect voltage (1.6 V to 5.0 V) and must stay within the absolute maximum of -0.3 V to 7.0 V. |
| 4 | RESETB | output | Reset output with an N-channel open-drain driver, absolute maximum 7.0 V and 30 mA output current; it goes low when VIN falls below the detect voltage or on watchdog timeout, and requires an external pull-up resistor. |
| 5 | VSS | power_in | Ground pin; all voltages in the datasheet are referenced to this pin. |
| 6 | Cd | passive | Adjustable pin for the external capacitor that sets release delay and watchdog timeout (tWD = Cd×10^6 ms with Cd in farads, e.g. 100 ms at 0.1 µF); absolute maximum Cd current is 10 mA and voltage is VIN+0.3 V or 7.0 V, and a capacitor is required for stable watchdog operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | SOT-23-6 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating Voltage | VIN | 1.5 | 6 | V | 9 | ||
| Detect Voltage Accuracy (SOT-26) | VDFL | -1 | 1 | % | SOT-26 (product code 1), detect voltage 1.6V | 4 | |
| Temperature Characteristics | ΔVDFL/(ΔTopr・VDFL) | -50 | 50 | ppm /℃ | -40℃≦Topr≦125℃ | 9 | |
| Supply Current | ISS | 8.1 | 12.1 | μA | Ta=25℃, VIN=VDF(T)×0.9 | 9 | |
| Supply Current (EN=L) | ISS | 2.5 | 3.5 | μA | Ta=25℃, VIN=VDF(T)×1.1, EN=L | 9 | |
| Supply Current (EN=H) | ISS | 9.8 | 12.6 | μA | Ta=25℃, VIN=VDF(T)×1.1, EN=H | 9 | |
| Supply Current | ISS | 8.1 | 14 | μA | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×0.9 | 9 | |
| Supply Current (EN=L) | ISS | 2.5 | 5 | μA | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×1.1, EN=L | 9 | |
| Supply Current (EN=H) | ISS | 9.8 | 13.6 | μA | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×1.1, EN=H | 9 | |
| Output Current N-ch | IRBOUT | 2.6 | 3.5 | mA | Ta=25℃, VRESETB=0.3V, VIN=1.5V | 9 | |
| Output Current N-ch | IRBOUT | 1.4 | 3.5 | mA | -40℃≦Ta≦125℃ (design value), VRESETB=0.3V, VIN=1.5V | 9 | |
| Cd Pin Sink Current | Icd | 530 | 770 | Ta=25℃, VIN=1.5V, VCd=0.7V | 9 | ||
| Cd Pin Sink Current | Icd | 295 | 770 | -40℃≦Ta≦125℃ (design value), VIN=1.5V, VCd=0.7V | 9 | ||
| Release Delay Time1 | tDR1 | 8.5 | 10 | 11.5 | ms | Ta=25℃, VIN=1.5V→VDF(T)×1.1, Cd=0.01μF | 9 |
| Release Delay Time1 | tDR1 | 7 | 10 | 12 | ms | -40℃≦Ta≦125℃ (design value), VIN=1.5V→VDF(T)×1.1, Cd=0.01μF | 9 |
| Release Delay Time2 | tDR2 | 0.85 | 1 | 1.15 | ms | Ta=25℃, VIN=VDF(T)×1.1, Cd=0.01μF | 9 |
| Release Delay Time2 | tDR2 | 0.7 | 1 | 1.2 | ms | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×1.1, Cd=0.01μF | 9 |
| Watchdog Timeout Period | tWD | 8.5 | 10 | 11.5 | ms | Ta=25℃, VIN=VDF(T)×1.1, Cd=0.01μF, WD=VSS | 9 |
| Watchdog Timeout Period | tWD | 7 | 10 | 12 | ms | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×1.1, Cd=0.01μF, WD=VSS | 9 |
| Detect Delay Time | tDF | 10 | 50 | μs | Ta=25℃, VIN=VDF(T)×1.1→1.5, Cd=0.01μF | 9 | |
| Detect Delay Time | tDF | 10 | 100 | μs | -40℃≦Ta≦125℃ (design value), VIN=VDF(T)×1.1→1.5, Cd=0.01μF | 9 | |
| Watchdog Pulse Width | tWDIN | 100 | ns | Ta=25℃, VIN=6.0V, Cd=0.01μF | 9 | ||
| Watchdog High Level Voltage | VWDH | 6 | V | VDF(T)×1.1≦VIN≦6.0V, Cd=0.01uF | 9 | ||
| Watchdog Low Level Voltage | VWDL | 0 | V | VDF(T)×1.1≦VIN≦6.0V, Cd=0.01uF | 9 | ||
| Watchdog Pull-down Resistance | RWD | 280 | 550 | 1100 | kΩ | Ta=25℃, VWD=6.0V | 9 |
| Watchdog Pull-down Resistance | RWD | 220 | 550 | 1350 | kΩ | -40℃≦Ta≦125℃ (design value), VWD=6.0V | 9 |
| EN High Level Voltage | VENH | 1.3 | V | VDF(T)×1.1≦VIN≦6.0V | 9 | ||
| EN Low Level Voltage | VENL | 0 | 0.45 | V | 9 | ||
| EN Pull-up Resistance | REN | 300 | 800 | 1200 | kΩ | Ta=25℃, VIN=6.0V, VEN=0V | 9 |
| EN Pull-up Resistance | REN | 230 | 800 | 1420 | kΩ | -40℃≦Ta≦125℃ (design value), VIN=6.0V, VEN=0V | 9 |
| Input Voltage (absolute maximum) | VIN | -0.3 | 7 | V | All voltages referenced to VSS | 7 | |
| WD Input Voltage | VWD | -0.3 | 7 | V | All voltages referenced to VSS | 7 | |
| EN/ENB Input Voltage | VEN/VENB | -0.3 | 7 | V | All voltages referenced to VSS | 7 | |
| Cd Pin Voltage | VCd | -0.3 | V | Max is VIN+0.3V or 7.0V, whichever is lower | 7 | ||
| Output Voltage | VRESETB | -0.3 | 7 | V | All voltages referenced to VSS | 7 | |
| Cd Pin Current | ICd | 10 | mA | 7 | |||
| Output Current | IOUT | 30 | mA | 7 | |||
| Power Dissipation (SOT-26) | Pd | 250 | mW | Ta=25℃, SOT-26 (standard value; 600 mW on 40mm x 40mm board is PCB-mounted reference) | 7 | ||
| Operating Ambient Temperature | Topr | -40 | 125 | ℃ | 7 | ||
| Storage Temperature | Tstg | -55 | 125 | ℃ | 7 | ||
| Current Consumption (Cd/ILeak) | ILeak | 0.01 | 0.1 | μA | Ta=25℃, VIN=6.0V, VRESETB=6.0V | 9 | |
| Leakage Current | ILeak | 0.01 | μA | -40℃≦Ta≦125℃ (design value), VIN=6.0V, VRESETB=6.0V | 9 |
CAD (KiCad official)
- Symbol:
XC6131A161MR-G - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
xc6131a161mr-g-etched.step/xc6131a161mr-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc6131a161mr-g.step/xc6131a161mr-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Torex Semicon datasheet (29 pp, sha256
7f5722bac221bdfe, retrieved 2026-10-28, 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).