MC33167THG

Voltage - Output (Min/Fixed):	5.05V
Base Part Number:	MC33167
Supplier Device Package:	TO-220-5 Horizontal
Package / Case:	TO-220-5 Formed Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	72kHz
Current - Output:	5.5A (Switch)
Voltage - Output (Max):	40V (Switch)
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	7.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down
Part Status:	Active
Packaging:	Tube

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MC33167THG Application Field and Working PrincipleThe MC33167THG is a durable, low cost non-synchronous Buck Step-Down DC-DC converter. It is designed to provide a regulated output voltage while providing high efficiency and a wide operating temperature range of -30°C to 85°C. The device is ideal for powering electrical or electronic circuits in computers, consumer electronics, test and measurement instrumentation, portable devices, automotive, industrial, and other systems.The device includes an input voltage range of 3V to 40V, and an output voltage range of 0.8V to 30V. The device is capable of supplying peak currents up to 5A in output. It is equipped with advanced temperature protection and adjustable slew rate for better load transient response. Additionally, it includes output voltage adjustment, soft start, internal slope compensation, and external compensation for improved load step response. It also features an integrated reverse current protection.The MC33167THG works by converting a higher input voltage to a lower output voltage. The input signal is first rectified, followed by a PWM step-down converter using a low pass filter and an adjustable voltage regulator. PWM step-down conversion requires an external switching transistor, and an internal voltage regulator adjusts the output voltage using either a resistor or an external voltage reference. The output is then regulated by an external oven-controlled crystal oscillator (OCXO) to help stabilize the output voltage.The device features wide input voltage range, high efficiency, adjustable output voltage, and excellent switching frequency accuracy for multiple applications. It includes an integrated soft start to reduce inrush current and slew rate control for improved transient response, as well as output current limiting, short circuit protection and overtemperature protection. In conclusion, the MC33167THG Buck Step-Down DC-DC converter is a cost-effective, high efficiency, highly reliable solution for powering electrical or electronic circuits in computers, consumer electronics, test and measurement instrumentation, portable devices, automotive, industrial, and other systems. The device provides a wide input voltage range, adjustable output voltage, excellent switching frequency accuracy, and features multiple protection features to improve the overall system performance.

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