SPX5205M5-L-5-0/TR SC31 Low Dropout Positive Voltage Regulator
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SPX5205M5-L-5.0 Low Dropout (LDO) Voltage Regulator – High Efficiency 5V Output
The SPX5205M5-L-5.0 is a high-performance low dropout (LDO) positive voltage regulator designed for battery-powered and low-power electronic applications. It delivers a stable 5V output with excellent efficiency, low noise, and minimal power consumption.
Thanks to its very low dropout voltage and low ground current, this regulator maximizes battery life while maintaining reliable voltage regulation even under low input conditions.
Housed in a compact SOT-23-5 package, the SPX5205M5 is ideal for space-constrained designs such as portable devices, embedded systems, and control boards.
Technical Specifications
| Part Number | SPX5205M5-L-5.0/TR |
| Type | Low Dropout (LDO) Regulator |
| Output Voltage | 5.0V (Fixed) |
| Output Accuracy | < ±1% |
| Dropout Voltage | Very Low |
| Ground Current | 750µA @ 100mA |
| Package | SOT-23-5 |
| Mounting Type | Surface Mount |
| Condition | Brand New |
Where the SPX5205M5-L-5.0 fits in mining hardware
Most modern ASIC miner control boards run their main SoC and digital ICs on 3.3V or 1.8V rails, but USB host ports, status indicators, supervisory ICs and small communication transceivers still require a clean 5V supply. The SPX5205M5 sits on that 5V rail, fed from the +12V auxiliary supply, and is easily damaged when a connected peripheral shorts to ground or pulls excessive current.
Compatibility
Use as a direct replacement for SPX5205M5-L-5.0 sockets and other pin-compatible SC31-marked SOT-23-5 5V LDOs on miner control boards. Always verify the marking and pinout against the original part before fitting.
Common failure symptoms
- 5V rail measures 0V or very low on the control board
- USB ports on the control board no longer enumerate connected devices
- SOT-23-5 IC running hotter than the surrounding components
- Burn mark visible on the LDO package after a peripheral short event
- Supervisor IC reports under-voltage on the 5V rail and resets the SoC
Frequently asked questions
What does the SC31 marking refer to?
SC31 is the package marking used on the SPX5205M5-L-5.0/TR for identification on the SOT-23-5 body. Always cross-check against the schematic before substituting.
Can the SPX5205M5 be replaced with an adjustable LDO?
Only with care. The original board is designed around a fixed 5V output; using an adjustable variant requires fitting the correct feedback resistor network — not advisable in routine repair work.
Is the LDO protected against reverse battery?
Yes, the SPX5205M5 includes reverse-battery protection, thermal shutdown and current limit, which is helpful in repair environments where misprobed measurements occasionally inject reverse polarity.
Do you supply it on tape and reel?
Yes, contact us for tape-and-reel quantities suitable for SMT repair production.
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Contact contact@lys-sz.com for volume pricing or compatibility questions.
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