MC33063AVPG

Voltage - Output (Min/Fixed):	1.25V
Base Part Number:	MC33063A
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	33kHz
Current - Output:	1.5A (Switch)
Voltage - Output (Max):	40V (Switch)
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
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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MC33063AVPG Application Field and Working Principle

1. Introduction

The MC33063AVPG is a voltage regulator series developed by ON Semiconductor. It belongs to the category of PMIC-Voltage Regulators-DC DC Switching Regulators, at the power range from 1A to 2A. This series provides high efficiency and long life over a wide ambient temperature range without advanced heatsinks or fans. The MC33063AVPG offers both high and low output voltage precision and excellently reduce voltage up or down switches.

2. Applications and Benefits

The MC33063AVPG series voltage regulator provides high accuracy, stable output and better thermal performance, which make it suitable for various applications such as automotive, computer, laptop, industrial control, test equipment, mobile devices, home and office electronics and etc. Especially, these regulators are perfect for making a low cost, high efficiency and high power switching mode power supply.

3. MC33063AVPG Features

The MC33063AVPG is offered in 8- pins package. It has an internal soft-start circuit which is used to reduce the voltage spike, ensures accurate current limit and protects the system from any sudden surge. This series regulator has low dirt and minimal pressure drop. It is able to tolerate input voltage up to 40V and output voltage up to 40V. It has operating temperature range between -30℃ and +85℃.

4. MC33063AVPG Options

The MC33063AVPG is a versatile product series. It provides different voltage options of 5.0V, 7.5V and 12V. Users can also choose between either standard or low-side gate drive option. The standard gate drive is used for inrush current limiting application, while the low-side gate drive is used for low noise EMI performance power supplies.

5. Working Principle

This series of powered regulators employ a Buck-Boost bridge circuit, with a power transistor and an internal oscillator. This circuit is used to switch the input voltage to the capacitor, and the capacitor is then used to convert the voltage from either high to low or vice versa. The switching frequency is controlled by the oscillator and its internal components. The bridge circuit is consists of four switching elements, namely external power MOSFET, external diode, inductor and the output capacitor. By simply changing the duty cycle of the MOSFET switching, the output voltage can be adjusted accordingly.

6. Summary

The MC33063AVPG is an excellent voltage regulator series. It fits perfectly into the category of PMIC-Voltage Regulators-DC DC Switching Regulators, with its wide power range, high efficient operation, long/stable output and flexibility to various applications. Moreover, its Buck-Boost bridge circuit with internal oscillator simplify the design of power supplies, makes it a perfect choice for low cost, high efficient and high quality power supplies.

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