Analog Devices Inc. LT1121IZ-5#TRPBF

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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 RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

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.
Base Product Number : LT1121IZ-5
150mA 5V Analog Devices LDO Linear Regulator Low Dropout TO-92-3
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.