Micrel Inc. MIC5259-1.5YD5
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $0.41 | $0.41 |
| 15+ | $0.40 | $6.00 |
| 25+ | $0.39 | $9.75 |
| 50+ | $0.37 | $18.50 |
| 100+ | $0.32 | $32.00 |
| N+ | $0.06 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Micrel Inc. |
| Product Series | |
| Packaging | Bulk | |
| Output Configuration | Positive |
| Output Type | Fixed |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 6V |
| Voltage - Output (Min/Fixed) | 1.5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.55V @ 300mA |
| Current - Output | 300mA |
| Current - Quiescent (Iq) | 150 µA |
| Current - Supply (Max) | 250 µA |
| PSRR | 65dB ~ 53dB (10Hz ~ 10kHz) |
| Control Features | Enable |
| Protection Features | Over Current, Over Temperature, Under Voltage Lockout (UVLO) |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | SOT-23-5 Thin, TSOT-23-5 |
| Supplier Device Package | TSOT-23-5 |
The MIC5259-1.5YD5 is a fixed 1.5V low dropout linear regulator delivering up to 300mA of output current. It features a quiescent current of 150µA and a dropout voltage of 550mV at full load. The device offers excellent power supply rejection of 65dB at 10Hz, ensuring clean power for sensitive digital and analog circuits. Packaged in a TSOT-23-5, this LDO is well-suited for low-voltage, medium-current applications.
- Low-Voltage Output: 1.5V rail is perfect for modern low-power digital ICs and memory termination.
- High PSRR: 65dB at 10Hz rejects low-frequency noise for stable operation.
- 300mA Capacity: Supports medium-current loads in portable devices.
- Compact Form Factor: TSOT-23-5 package enables space-efficient PCB layouts.
Low-Voltage Digital Cores
The 1.5V output is ideal for powering the core voltage of low-power FPGAs, CPLDs, and application processors in portable devices, delivering up to 300mA for digital logic.
DDR Memory Termination
In embedded systems with DDR2/DDR3 memory, this LDO can provide the 1.5V VTT rail for memory termination, ensuring signal integrity with low noise.
Portable Medical Devices
For glucose monitors and portable diagnostic tools, the MIC5259-1.5YD5 provides stable 1.5V power for microcontrollers and sensors, with high PSRR for accurate measurements.
Wireless Sensor Networks
In Zigbee and Thread nodes, this regulator powers the 1.5V logic section of the radio SoC, with 65dB PSRR at 10Hz reducing interference from the battery supply.
Battery-Powered Instruments
Handheld multimeters and calibration tools benefit from the low dropout and high PSRR, ensuring accurate readings even as the battery discharges.
Consumer IoT Devices
Smart plugs, light bulbs, and home automation sensors use this LDO for their 1.5V control logic, providing reliable operation in always-on applications.
- Q: What is the output voltage of the MIC5259-1.5YD5?
- A: The fixed output voltage is 1.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 550mV at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150µA.
- Q: What package is available?
- A: It comes in a TSOT-23-5 package.
- Q: What is the output voltage of the MIC5259-1.5YD5?
- A: The fixed output voltage is 1.5V.
- Q: What is the maximum output current?
- A: It can deliver up to 300mA.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 550mV at 300mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 150µA.
- Q: What package is available?
- A: It comes in a TSOT-23-5 package.

MIC5259-1.5YD5.pdf