MIC5252-1.8BM5-TR

Current - Output:	150mA
Base Part Number:	MIC5252
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	63dB ~ 48dB (10Hz ~ 10kHz)
Current - Supply (Max):	200µA
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	0.25V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	6V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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Application Field and Working Principle of MIC5252-1.8BM5-TR

The MIC5252-1.8BM5-TR is a precision low-dropout (LDO) voltage regulator, which belongs to the voltage regulator linear category of PMICs (Power Management ICs). It is specifically designed for demanding battery-powered applications, providing a nearly bottomless true load regulation and ultra-low dropout.

Application Field

The MIC5252-1.8BM5-TR can offer a compact solution to multiple applications requiring low-noise and excellent regulation. It is suitable for applications such as portable devices with batteries, digital cameras, PDAs, cellular phones, set-top-boxes, digital TV and other audio/video applications. It has a low-noise profile, high efficiency, and good transient characteristics.

Working Principle

The MIC5252-1.8BM5-TR operates via a three-terminal architecture. The output voltage is set by an external resistor divider, and the output voltage is regulated by comparing it with an internal precision reference.The high quiescent current allows the MIC5252-1.8BM5-TR to deliver up to 0.6A of output current in dropout condition, with a headroom voltage of 190mV at 300mA load. It also provides superior thermal performance under load over traditional voltage regulators, due to its low quiescent current and tightly regulated output presented by its P-channel FET configuration.In addition, the MIC5252-1.8BM5-TR has exclusive short-circuit protection. It turns off the internal FET in the event of a short circuit or an over-power situation. It also has soft-start circuitry which limits the inrush current at power-on.Its reverse-voltage protection ensures that the output voltage does not exceed the input voltage and a current-limit protection ensures that the load current does not exceed the maximum output current.The MIC5252-1.8BM5-TR is also compliant with the new European (RoHS/WEE) requirements for lead-free products, providing a simple solution for eliminating the need for hazardous cadmium-plated or lead-plated fixed resistor dividers.

Conclusion

The MIC5252-1.8BM5-TR is a low-dropout regulator ideal for low-noise and precision regulation within battery-powered applications, providing superior thermal performance and short-circuit protection. Its reverse-voltage protection, current-limit protection, and soft-start circuitry make this device an ideal choice for customers seeking a simple, reliable and cost-effective voltage regulator solution.

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