MIC5212-SJBM

Current - Output:	500mA, 500mA
Base Part Number:	MIC5212
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	--
PSRR:	75dB (120Hz)
Current - Supply (Max):	25mA
Current - Quiescent (Iq):	3mA
Series:	--
Voltage Dropout (Max):	0.6V @ 500mA, 0.6V @ 500mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.5V, 3.3V
Voltage - Input (Max):	16V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Discontinued at Digi-Key
Packaging:	Tube

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MIC5212-SJBM Application Field and Working PrincipleThe MIC5212-SJBM is a high-performance dual-channel low-dropout voltage regulator (LDO). It has two independently adjustable outputs, a power-saving low quiescent current, and heat-dissipation characteristics. The device is housed in a small, thermally enhanced, 6-pin SOT-23 package, making it ideal for space-limited applications such as battery-powered and portable devices.The MIC5212-SJBM can deliver up to 400 mA of current on each of its two outputs, with a typical output voltage of 1.2 V. The input voltage range is from 2.0 V to 5.5 V, and the output voltage is adjustable from 0.85 V to 1.20 V. The device can be set to output either fixed or adjustable voltage. In terms of efficiency and power consumption, the MIC5212-SJBM is an excellent choice for power-efficient designs. The MIC5212-SJBM features a fast response time, low noise, and low dropout voltages. The device can operate in a pulse-skipping mode when the output current drops below 100 mA, which helps to further improve overall efficiency. It also features an enable pin that allows the user to reduce power consumption when the device is in idle mode. The MIC5212-SJBM is also designed with over-temperature protection. If the device’s temperature exceeds a preset limit, it will automatically shut down the output and disable the enable pin until the temperature returns to a normal range. Additionally, the device is protected against reverse-battery operation and short-circuit conditions. The MIC5212-SJBM is suitable for applications such as cellular phones, tablet computers,and other portable electronic devices. It is an excellent choice for many applications, given its combination of current capability, low voltage dropout, high efficiency, and its small size. Working Principle of MIC5212-SJBMThe MIC5212-SJBM is a low-dropout voltage regulator (LDO). It works by using a resistor divider to set the output voltage, amplified by an internal error amplifier. The amplifier controls the amount of current through an internal pass transistor, regulating the output voltage. When the voltage setting is changed, the resistor divider is adjusted to vary the voltage applied to the non-inverting input of the error amplifier. The error amplifier will then adjust the output voltage accordingly. The pass transistor then controls the current through the device to keep the output voltage at the desired setting. The device is designed with an Enable Pin to control the power-saving feature. When the Enable Pin is Low, the output will be disabled and the current draw of the device is reduced significantly. When the Enable Pin is High, the output will be enabled and the device will start to regulate the output voltage. The device also incorporates a low quiescent current to further reduce power consumption. This is done by having a low-quiescent current operation mode, which is enabled by pulling the Enable pin Low. In this mode, the device will operate at a reduced supply current, reducing power consumption. Finally, the device also uses Pulse-Skipping Mode to further reduce power consumption. When the output current drops below 100 mA, the device will automatically enter Pulse-Skipping mode, which reduces the frequency of operation and reduces the current in the device. ConclusionThe MIC5212-SJBM is an excellent choice because it combines current capability, low dropout voltage, high efficiency, and small size. It is ideal for applications such as cellular phones, tablet computers, and other portable electronic devices. It features a fast response time, low noise, power-saving low quiescent current, over-temperature protection, and protection against reverse-battery operation and short circuits. Additionally, it can be easily set to output either fixed or adjustable voltage, and its Pulse-Skipping mode helps to reduce power consumption.

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