Analog Devices Inc. LT1121IZ-5#TRPBF
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $11.90 | $11.90 |
| 15+ | $2.74 | $41.10 |
| 25+ | $2.68 | $67.00 |
| 50+ | $2.53 | $126.50 |
| 100+ | $2.24 | $224.00 |
| N+ | $0.45 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Analog Devices Inc. |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Output Configuration | Active |
| Output Type | Positive |
| Number of Regulators | Fixed |
| Voltage - Input (Max) | 30V |
| Voltage - Output (Min/Fixed) | 5V |
| Voltage - Output (Max) | - |
| Voltage Dropout (Max) | 0.7V @ 150mA |
| Current - Output | 150mA |
| Current - Quiescent (Iq) | 50 μA |
| Current - Supply (Max) | 14 mA |
| PSRR | 58dB (120Hz) |
| Control Features | Enable |
| Protection Features | Over Temperature, Reverse Polarity |
| Operating Temperature | -40°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) Formed Leads |
| Supplier Device Package | TO-92-3 |
| ROHS |
The LT1121IZ-5 from Analog Devices is a fixed 5V low dropout linear regulator in a classic TO-92-3 package. It delivers up to 150mA of output current with a dropout voltage of 0.7V at full load. With a quiescent current of 50 μA, it offers a good balance of performance and efficiency for a variety of applications. Its through-hole package makes it easy to integrate into existing designs.
- Through-Hole Convenience: TO-92-3 package is easy to solder and ideal for prototyping.
- Low Dropout: 0.7V dropout at 150mA allows operation from a 5.7V input.
- Low Quiescent Current: 50 μA IQ reduces power consumption in battery-operated devices.
- Proven Reliability: Analog Devices' reputation for high-quality linear regulators ensures dependable performance.
Through-Hole Prototyping
The TO-92-3 package is ideal for breadboard prototyping and educational projects, providing a reliable 5V supply for experimental circuits.
Legacy System Upgrades
Replace older, less efficient regulators in existing through-hole designs with the LT1121IZ-5 for improved dropout performance and lower quiescent current.
Low-Power Audio Circuits
Use its 58dB PSRR at 120Hz to filter mains hum and provide a clean 5V supply for analog audio stages in vintage-style equipment.
Battery Backup Systems
Maintain a stable 5V rail in backup power circuits, where the 50 μA quiescent current helps preserve battery charge.
Simple Voltage References
For applications requiring a basic, reliable 5V reference, this LDO offers a straightforward solution with minimal external components.
- Q: What is the output voltage of the LT1121IZ-5?
- A: It provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at a 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 50 μA.
- Q: What package is available?
- A: It is available in a TO-92-3 package.
- Q: What is the output voltage of the LT1121IZ-5?
- A: It provides a fixed 5V output.
- Q: What is the maximum output current?
- A: It can deliver up to 150mA of output current.
- Q: What is the input voltage range?
- A: The input voltage range is not specified in the provided data; please refer to the datasheet.
- Q: What is the dropout voltage?
- A: The dropout voltage is 0.7V at a 150mA load.
- Q: What is the quiescent current?
- A: The quiescent current is 50 μA.
- Q: What package is available?
- A: It is available in a TO-92-3 package.

LT1121IZ-5#TRPBF.pdf