MIC5209-5.0YM

MIC5209-5.0YM is a fixed-output low-dropout (LDO) regulator from Micrel (now Microchip). It provides a regulated 5.0 V output from a higher input voltage with a small dropout, in a compact SOT-23‑5 (YM suffix) Pb‑free package.
Key points:
- Fixed 5.0 V output
- Low dropout suitable for battery-powered/portable designs
- Protection features: current limit and thermal shutdown (and often reverse-current protection)
- Package: YM denotes the SOT-23‑5 style, Pb‑free
Typical uses:
- Powering microcontrollers, sensors, and analog circuitry with a clean 5 V rail
Note:
- Exact maximum output current, dropout at load, quiescent current, and input range vary by variant and conditions. Check the MIC5209 datasheet for the precise specs and packaging details for MIC5209-5.0YM.

Common 5.0 V fixed LDO cross‑references (SOT-23‑5) to MIC5209‑5.0YM:
- Microchip MCP1825S‑5.0
- Texas Instruments TLV70050
- Torex XC6206P502MR
- Active-Semi AP2112K‑5.0
- Richtek RT9166‑50 (5.0 V)
Note: verify pinout, dropout voltage, and quiescent current for your design.

Key features of MIC5209-5.0YM (fixed 5V LDO in YM package):
- Fixed 5.0 V output regulator
- Output current up to ~150 mA
- Low dropout (roughly 0.1–0.2 V at 150 mA)
- Very low quiescent current (tens of µA)
- Good line and load regulation; solid PSRR
- Protected against short-circuit/overcurrent and has thermal shutdown
- Stable with modest output capacitors (low-ESR, typically 4.7–22 µF)
- Package: YM (SOT-23-5)
- Operating temperature: -40°C to 125°C
- RoHS-compliant
Note: exact numbers can vary slightly by lot; refer to the datasheet for precise limits.

- Pin count: 5
- Function: Fixed 5.0 V low-dropout regulator (LDO) from the MIC5209 family with an enable input. In the YM package (SOT-23-5/SC-70-5), pinout is typically EN, GND, VOUT, VIN, and NC.

- Manufacturer: Microchip Technology Inc. (the MIC5209 line is now under Microchip after acquiring Micrel)
- What kind of company: A multinational American semiconductor company that designs, develops, and manufactures microcontrollers, memory, and analog/linear components (including voltage regulators).

MIC5209-5.0YM is a fixed 5 V low-dropout regulator in a compact package. Common applications include:
- Power supply rail for microcontrollers, memories, sensors, and ADC/DACs in portable devices
- Analog front-ends, op-amps, and biasing circuits
- Space‑constrained, battery-powered/handheld and wearable/IoT electronics
- RF/wireless modules and other modules needing a stable 5 V rail
- General-purpose, low-noise regulation in compact instrumentation and consumer electronics
Notes: provides a stable 5 V output with low quiescent current suitable for compact PCB designs.

The MIC5209-5.0YM is in a 5‑pin SOT‑23 (SC‑70‑5) package.