component
XC9142B50CMR-G
Public Made by Adomby adom
Torex Semicon DC-DC Converters, 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
markdownXC9142B50CMR-G
Torex Semicon · DC-DC Converters · SOT-25-5
XC9142B50CMR-G 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 | CE | input | Chip enable input: H = active, L = stand-by; it is a CMOS input that must not be left open, and the CE voltage range is -0.3 to +7.0 V. |
| 2 | GND | power_in | Ground, the reference voltage for all other voltages; use a thick ground trace with sufficient strength. |
| 3 | BAT | power_in | Power input with an input voltage range of 0.65 V to 6.0 V (absolute maximum -0.3 to +7.0 V); place the input bypass capacitor CIN close to this pin. |
| 4 | VOUT | power_out | Output voltage pin (fixed 1.8 V to 5.5 V, absolute maximum -0.3 to +7.0 V); on type B the input is bypassed to the output at stand-by, so it must not be connected to another supply. |
| 5 | Lx | passive | Switching node connected to the external inductor, with a voltage range of -0.3 to +7.0 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Torex Semicon |
| Package | SOT-25-5 |
| Category | Power Supply Chip |
| 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 | VOUT | 4.9 | 5 | 5.1 | V | Voltage to start oscillation while VOUT=VOUT(T)x1.03→VOUT(T)x0.97; Ta=25℃ | 9 |
| Input Voltage | VBAT | 6 | V | 7 | |||
| Operation Start Voltage | VST1 | 0.9 | V | RL=1kΩ | 7 | ||
| Operation Hold Voltage | VHLD | 0.65 | V | RL=1kΩ | 7 | ||
| Quiescent Current (XC9142) | Iq | 17 | 30 | μA | VOUT=VBAT=VOUT(T)+0.5V, fOSC=1.2MHz | 7 | |
| Oscillation Frequency | fOSC | 1.02 | 1.2 | 1.38 | MHz | VBAT=VOUT(T)x0.5, IOUT=100mA, fOSC=1.2MHz | 7 |
| Maximum Duty Cycle | DMAX | 85 | 93 | 98 | % | VBAT=1.2V, VOUT=VOUT(T)-0.2V, fOSC=1.2MHz | 7 |
| Minimum Duty Cycle | DMIN | 0 | % | VOUT=VBAT=VOUT(T)+0.5V | 7 | ||
| PFM Switching Current | IPFM | 165 | 230 | mA | VBAT=1.5V, RL selected with VOUT(T), Table 1 | 7 | |
| Efficiency (XC9142) | EFFI | 86 | % | VBAT=VOUT(T)x0.6, RL selected with VOUT(T), Table 1; designed value | 7 | ||
| Efficiency | EFFI | 90 | % | VBAT=VOUT(T)x0.6, IOUT=100mA; designed value | 7 | ||
| Stand-by Current (A,B,D,E type) | ISTB | 0 | 1 | μA | VBAT=VLx=6.0V, VCE=0.0V, VOUT=OPEN (B type) | 7 | |
| Lx SW Pch ON Resistance | RLXP | 0.3 | Ω | VBAT=VLx=6.0V, IOUT=200mA | 7 | ||
| Lx SW Nch ON Resistance | RLXN | 0.3 | Ω | designed value | 7 | ||
| Lx SW H Leakage Current (A,B,D,E type) | ILXLH | 0 | 1 | μA | VBAT=6.0V, VCE=0.0V, VLx=6.0V, VOUT=OPEN | 7 | |
| Current Limit | ILIM | 1.07 | 1.3 | 2.3 | A | VBAT=VOUT(T)-0.2V, RLx=1Ω | 9 |
| Soft-Start Time | tSS | 0.6 | 1 | 2.5 | ms | VBAT=VOUT(T)x0.6, VOUT=VOUT(T)x0.9, fOSC=1.2MHz | 8 |
| Bypass SW Resistance (B Type) | RBSW | 100 | 180 | 400 | Ω | VBAT=3.3V, VOUT=0.0V, VCE=0.0V | 8 |
| CE H Voltage | VCEH | 0.8 | 6 | V | VOUT=VOUT(T)-0.15V, voltage changes Lx to be generated | 8 | |
| CE L Voltage | VCEL | 0.2 | V | VOUT=VOUT(T)-0.15V, voltage changes Lx to H level; min printed as GND | 8 | ||
| CE H Current | ICEH | -0.1 | 0.1 | μA | VBAT=6.0V, VOUT=6.0V, VLx=6.0V, VCE=6.0V | 8 | |
| CE L Current | ICEL | -0.1 | 0.1 | μA | VBAT=6.0V, VOUT=6.0V, VLx=6.0V, VCE=0.0V | 8 | |
| BAT Pin Voltage | VBAT | -0.3 | 7 | V | Ta=25℃ | 6 | |
| Lx Pin Voltage | VLx | -0.3 | 7 | V | Ta=25℃ | 6 | |
| VOUT Pin Voltage | VOUT | -0.3 | 7 | V | Ta=25℃ | 6 | |
| CE Pin Voltage | VCE | -0.3 | 7 | V | Ta=25℃ | 6 | |
| Power Dissipation SOT-25 | Pd | 600 | mW | PCB mounted, Ta=25℃ | 6 | ||
| Operating Ambient Temperature | Topr | -40 | 85 | ℃ | 6 | ||
| Storage Temperature | Tstg | -55 | 125 | ℃ | 6 |
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 | tin | 6-2. Sn-AG-Cu is used for the package terminals. If eutectic solder is used, mounting reliability is decreased. Please do not use eutectic solder paste. | 16 |
CAD (KiCad official)
- Symbol:
XC9142B50CMR-G - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25-5 (KiCad packages3D, STEP)
- 3D model files:
xc9142b50cmr-g-etched.step/xc9142b50cmr-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xc9142b50cmr-g.step/xc9142b50cmr-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Torex Semicon datasheet (34 pp, sha256
cac21233c885a026, retrieved 2026-10-27, 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).