MIC5206-3.2BM5-TR

Current - Output:	150mA
Base Part Number:	MIC5206
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, Reverse Polarity
Control Features:	Enable, Error Flag
PSRR:	--
Current - Supply (Max):	2.5mA
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	0.35V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.2V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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MIC5206-3.2BM5-TR Application Field and Working Principle

The MIC5206-3.2BM5-TR is a low-cost, high-performance low-dropout (LDO) regulator designed for supplying up to 350 mA of output current while using only 0.75 μA of quiescent current in suspend mode. It features fast response time, low noise and excellent output current ripple rejection in a low profile TSOT package. It is well-suited for applications requiring an extremely low-cost and low-power solution, such as mobile phones, PDA or other battery powered equipment.

Overview

The MIC5206-3.2BM5-TR is a ultra low-cost and ultra low-power CMOS low-dropout (LDO) regulator optimized for battery powered applications. It operates from an input voltage of 3.0V to 5.5V and provides an output regulated voltage from +1.0V to +3.3V. The MIC5206 integrates a current limited power N-MOSFET and current-sense comparator to limit its output current to 350 mA. The MIC5206 also features low quiescent current in power off or suspend mode.The MIC5206 provides fast response time: it has an input impedance of only 49K and the output voltage can be adjusted by using external resistors. It offers excellent load regulation too: the maximum output voltage deviation at full load is 18mV.Other features include high PSRR, low output noise, low shutdown current, and over-temperature protection. The MIC5206-3.2BM5-TR is provided in a TSOT23-5 package and is rated from 0°C to +85°C.

Applications

The MIC5206-3.2BM5-TR is well-suited for a wide range of applications such as: 1. Mobile phones2. PDAs3. Digital Cameras4. Portable Media Players5. Handheld Medical and Gaming Equipment6. Battery powered equipment

Features

1. +3.0V to +5.5V Input Voltage Range2. Low Dropout Voltage: 0.6V (typical) at 350 mA3. Ultra Low Quiescent Current: 0.75μA in Suspend Mode4. High PSRR: 66dB at 1KHz5. Low Noise Output: 25μVrms6. Fast Response Time: 4.0ms (typical)7. External Adjustable Output Voltage: 1.0V to 3.3V8. Current Limit Protection9. Over-Temperature Protection10. Low Shutdown Current: 0.1μA typical11. TSOT23-5 Package

Working Principle

The MIC5206-3.2BM5-TR includes an error amplifier, current sense comparator and a power N-MOSFET arranged in a 3.2V low dropout (LDO) voltage regulator. The error amplifier compares the desired output voltage set by a pair of external resistors with a reference voltage and generates an error signal. This signal is used to control the gate voltage of the power N-MOSFET. The power N-MOSFET generates a low-impedance output path and allows current to flow to the load. The current-sense comparator monitors both the output current and the internal power transistor voltage drop, then determines when to reduce the gate voltage to shut off the MOSFET and protect the system from over-current conditions.The MIC5206 includes a low-power undervoltage lockout (UVLO) function to prevent the output from providing an incorrect regulated voltage when the input voltage is not sufficient. The MIC5206 also features a shutdown mode to reduce quiescent current when the system is in suspend mode.

Conclusion:

The MIC5206-3.2BM5-TR is an ultra low-cost and ultra low-power CMOS low-dropout (LDO) regulator optimized for battery powered applications. It has low noise output, fast response time and high PSRR as well as low dropout voltage at high loads. In addition, it features over-temperature protection and current-limit protection, and its low quiescent current in power-off or suspend mode make it well-suited for mobile phones, PDAs, digital cameras, and other battery-operated electrical devices.

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