MCP1824T-1802E/OT LDO Linear Voltage Regulator IC 1.8V
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MCP1824T-1802E/OT 1.8V LDO Voltage Regulator | 300mA LDO in SOT-223
The MCP1824T-1802E/OT is a 1.8V fixed-output low-dropout (LDO) linear voltage regulator with 300mA output current capacity. The 1.8V output supplies the standard "1.8V I/O" rail used on many MCUs, FPGA cores, and ASIC peripheral chains. The 2.1V to 6.0V input range means it works directly from 3.3V or 5V upstream rails.
The part offers a tight 0.4% output voltage tolerance, 200mV typical dropout at 300mA, and a 120µA typical supply current (dropping to 0.1µA in shutdown mode via the enable pin). Built-in over-temperature protection guards against thermal runaway.
When to Replace the MCP1824T-1802E/OT
- 1.8V rail dead while VIN is valid — internal pass element failed open.
- 1.8V rail drooping under load — LDO can't sustain the 300mA spec.
- Shutdown control no longer works — EN pin defective.
- Visible damage on the SOT-223 package.
MCP1824T-1802E/OT Specifications
| Feature | Specification |
|---|---|
| Manufacturer | Original |
| Type | Low-Dropout (LDO) Linear Regulator |
| Output Voltage | 1.8V (fixed, "1802E" suffix) |
| Output Current | 300mA |
| Input Voltage Range | 2.1V to 6.0V |
| Dropout Voltage | 200mV typical @ 300mA |
| Output Voltage Tolerance | 0.4% |
| Supply Current | 120µA typical |
| Shutdown Supply Current | 0.1µA typical |
| Protections | Over-temperature, short-circuit |
| Package | 5-lead SOT-223 ("OT" suffix) |
FAQ — MCP1824T-1802E/OT
Q: What do the suffix codes mean?
A: "1802E" = 1.8V fixed output, extended-temperature grade. "OT" = 5-lead SOT-223 package. The MCP1824 family ships in multiple voltage options (1.8V, 2.5V, 3.0V, 3.3V) and package variants — match the silk mark on your failed chip exactly.
Q: Can I use the 3-lead SOT-223 variant (MCP1824S) instead?
A: No — MCP1824S omits the enable pin, so it's not pin-compatible with the 5-lead MCP1824T. Stick with the 5-lead version unless the PCB silk specifically calls for the S variant.
Q: Rework profile?
A: Hot-air at 320°C with flux paste. SOT-223 has an exposed pad/tab — make sure it reflows with the PCB thermal pad for proper heat dissipation at the 300mA load point.
Q: Bulk pricing?
A: Yes — email contact@lys-sz.com for tape-and-reel quantities.
Related products
- MCP1824T-1202E/OT 1.2V LDO (Bitaxe Gamma BM1370)
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- RT9080-33GJ5 3.3V LDO
- TLV75512PDR 1.2V LDO (Antminer S21 Hydro)
Sourcing MCP1824T-1802E/OT LDOs in tape-and-reel quantities? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.
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