MC33269T-3.3G

Current - Output:	800mA
Base Part Number:	MC33269
Supplier Device Package:	TO-220AB
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Temperature, Short Circuit
Control Features:	--
PSRR:	55dB (120Hz)
Current - Quiescent (Iq):	8mA
Series:	--
Voltage Dropout (Max):	1.35V @ 800mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction

The MC33269T-3.3G is a voltage regulator used within the class of linear voltage regulators for the industrial and telecom sectors. It provides excellent precision and stability over varied power and temperature conditions with minimal ripple and noise. The device is a three-terminal negative adjustable voltage regulator used for positive and negative voltage regulation in a wide variety of different applications such as Telecom, Consumer Electronics, Industrial Equipment, Embedded Computing, and Robotics.

Application Field

The MC33269T-3.3G 3-terminal linear voltage regulator is specifically intended for the Telecom, Consumer Electronics, Industrial Equipment, Embedded Computing, and Robotics industries. It can be used to source or sink current. It supplies up to 10mA of output current and is capable of supplying voltage regulation over a wide input voltage range of 5.5V to 30V. The MC33269T-3.3G also can be used to provide a negative voltage reference for sensitive applications. Its 3-terminal configuration is designed to provide excellent precision and stability in positive as well as with smaller negative voltage regulation applications.

Working Principle

The MC33269T-3.3G operates on a simple principle—it uses an integrated voltage reference, current mirror and resistor network to sense and regulate the output voltage applied to its output terminal. The MC33269T-3.3G is current mode regulated and uses Pulse Width Modulation (PWM) to regulate the output voltage. The reference voltage applied to the MC33269T-3.3G is derived from the internal voltage reference pin (labeled VREF). The output voltage is then regulated according to this voltage reference voltage depending upon the values of the resistors within the device.

Features

The MC33269T-3.3G features including over-temperature, current limit and short-circuit protection. The device also has a wide range of input voltages and a wide range of output voltages. It is able to provide up to 10mA of output current and is capable of sustaining the load up to 150µA of input current on VIN pin. The MC33269T-3.3G also provides an improved power supply reject ration (PSRR) with an internal voltage reference to provide excellent stability over temperature and input voltage. The device also provides an adjustable output voltage when the VOUT pin is connected to an external feedback circuit.

Conclusion

In conclusion, the MC33269T-3.3G is a linear voltage regulator specifically designed for the Telecom, Consumer Electronics, Industrial Equipment, Embedded Computing, and Robotics industries. It is a 3-terminal negative adjustable voltage regulator used to source or sink current. It is capable of providing up to 10mA of output current, over-temperature protection, current limit and short-circuit protection. The integrated voltage reference, current mirror and resistor network allow the device to sense and regulate the output voltage applied to its output terminal. The MC33269T-3.3G is also capable of providing adjustable output voltage when the VOUT pin is connected to an external feedback circuit.

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