MIC37301-1.8WR

Voltage Dropout (Max):	--
Base Part Number:	MIC37301-1.8
Supplier Device Package:	S-PAK-5
Package / Case:	SPak-5 (5 leads + Tab)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	--
Current - Output:	3A
Series:	--
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:	Active
Packaging:	Tube

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Introduction

The MIC37301-1.8WR is a linear voltage regulator designed to provide a accurately regulated output voltage, ranging from 1.6V to 5.5V, with a maximum output current of 1.8A. An internal PMOS transistor provides a low-dropout (LDO) regulation function, enabling a low input voltage of 1.6V. It also provides fast transient response, high PSRR performance and excellent temperature stability. The device is designed to withstand up to 25V input surges and is stable in all operating modes.

Application Fields

The MIC37301 is suitable for applications ranging from portable communications and handheld devices, to medical and industrial products. It can also be used in automotive and computer systems.The MIC37301 can provide high efficiency and fast transient response for a wide range of motor control, power management and industrial applications. It is also ideal for automotive powertrains, providing excellent temperature stability and PSRR performance, with the ability to withstand up to 25V input surges.

Working Principle

The MIC37301 operates by controlling the current through an internal PMOS transistor and an external resistor. A control circuit monitors the output voltage and adjusts the current through the internal PMOS transistor to provide the desired output voltage.When the input voltage is lower than the regulated output voltage, the PMOS transistor is switched on, allowing current to flow into the output. When the output voltage reaches the desired level, the PMOS transistor is switched off, preventing current from flowing through the output.The MIC37301 also integrates independent power-on reset (PO) and power-off reset (PFO) delay features. The PO and PFO delays protect the output voltage during system power-on/off transitions, ensuring more reliable operation in automotive, industrial, and other harsh environments.

Conclusion

The MIC37301-1.8WR is a linear voltage regulator designed to provide a accurately regulated output voltage, ranging from 1.6V to 5.5V, with a maximum output current of 1.8A. Its low-dropout (LDO) regulation function enables a low input voltage of 1.6V. It provides fast transient response, high PSRR performance, excellent temperature stability and up to 25V input surge protection. The MIC37301 is suitable for a wide range of portable communications, motor control and industrial applications. Its integrated PO and PFO delays provide more reliable operation in harsh environments.

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