Micrel Inc. MIC5219-2.9BM5

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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) 12V
Voltage - Output (Min/Fixed) 2.9V
Voltage - Output (Max) -
Voltage Dropout (Max) 0.6V @ 500mA
Current - Output 500mA
Current - Quiescent (Iq) 8 µA
Current - Supply (Max) -
PSRR 75dB (120Hz)
Control Features Enable
Protection Features Over Current, Over Temperature, Reverse Polarity
Operating Temperature -40°C ~ 125°C
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Supplier Device Package SOT-23-5

The MIC5219-2.9BM5 is a fixed 2.9V low dropout linear regulator from Micrel, delivering up to 500mA. Its ultra-low 8 µA quiescent current makes it ideal for battery-powered and energy-harvesting applications. The SOT-23-5 package is compact and suitable for space-constrained designs. With 0.6V dropout at full load and 75dB PSRR, it ensures stable, clean power.

  • Minimal Power Loss: 8 µA quiescent current reduces wasted energy, ideal for always-on devices.
  • Low Dropout: 0.6V at 500mA allows operation from nearly depleted batteries.
  • High PSRR: 75dB at 120Hz rejects power supply noise, critical for RF and audio circuits.
  • Small Form Factor: SOT-23-5 enables miniaturized product designs.

Memory Power Supplies

2.9V output is compatible with DDR memory termination rails, providing stable voltage for high-speed data integrity.

Portable Test Instruments

Low quiescent current and 500mA output power handheld multimeters and oscilloscopes, extending battery life during field use.

RF Transceiver Modules

75dB PSRR at 120Hz ensures clean 2.9V supply for VCOs and PLLs, reducing phase noise in wireless communication.

Medical Implantable Devices

Ultra-low 8 µA quiescent current is critical for pacemakers and neurostimulators, maximizing device longevity.

Security Cameras

Powers image sensors and processors at 2.9V, with low dropout maintaining operation during battery voltage sag.

Consumer Audio Players

Provides clean 2.9V rail for DACs and amplifiers, minimizing distortion and noise in portable music players.

Q: What is the output voltage of the MIC5219-2.9BM5?
A: The fixed output voltage is 2.9V.
Q: What is the maximum output current?
A: It can deliver up to 500mA.
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 0.6V at 500mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 8 µA.
Q: What package is available?
A: It comes in a SOT-23-5 package.
Base Product Number : MIC5219-2.9BM5
2.9V 500mA LDO Linear Regulator Low Quiescent Current Micrel SOT-23-5
Q: What is the output voltage of the MIC5219-2.9BM5?
A: The fixed output voltage is 2.9V.
Q: What is the maximum output current?
A: It can deliver up to 500mA.
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 0.6V at 500mA load.
Q: What is the quiescent current?
A: The quiescent current is very low at 8 µA.
Q: What package is available?
A: It comes in a SOT-23-5 package.