MC33063ADRG4

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MC33063ADRG4 is a DC-DC switching regulator developed by ON Semiconductor company. It is an integrated voltage regulator found in the product family of PMIC – Voltage Regulators – DC DC Switching Regulators. The MC33063ADRG4 device combines all the active components required to implement a step-down (buck) or voltage-inverting (boost) switching regulator that is capable of producing output currents up to 3A. By including all active components on the same silicon substrate, it decreases the component count, thus decreasing the solution cost and increasing design flexibility.

The MC33063ADRG4 features the standard features of On Semiconductor switching regulators such as pulse-width modulation control, temperature-compensated duty ratio control, inline current limit, output voltage tracking, inverted output capability, and automatic input under-voltage lockout. Also included are external componentless programming voltage and current limits and frequency selection.

The MC33063ADRG4 integrates much of the circuitry necessary to achieve a 1A output with a high efficiency in a single package, eliminating the need for multiple external components. This reduces valuable board space and power-generating components needed to achieve a stable output voltage. Included in the MC33063ADRG4 package is a N-channel power MOSFET, oscillator, current limit comparator, PWM comparator, and a voltage regulator.

The MC33063ADRG4\'s working principle is based on a fixed frequency, current mode, synchronous pulse-width modulation (PWM) topology. The PWM comparator monitors the output voltage and modulation level. When the voltage reaches the level set by the reference voltage, a pulse is generated at the output of the PWM comparator. The PWM comparator\'s output is then sent to the comparator\'s current limit. When the current reaches the level set by the current limitation, the comparator\'s output is latched, causing the N-channel MOSFET to turn off. When the voltage drops below the set level, the PWM comparator sends another pulse and the cycle repeats.

The MC33063ADRG4 is suitable for a wide range of applications, including battery-powered equipment, cellular phones, cordless phones, portable computers, and disk drives. The MC33063ADRG4 can output frequencies up to 1 MHz, thus providing very small output voltage ripple and, consequently, high efficiency. It incorporates a maximum duty cycle setting feature that, when combined with an external resistor, provides an adjustable voltage-regulated output capability. Other features include output voltage tracking, input voltage-controlled frequency modulation and adjustable frequency setting for optimization of transient response and noise reduction.

The MC33063ADRG4 is certified to AEC-Q100 temperature grade 1, meaning that it is a temperature-rated device suitable for automotive applications. The product is available in an SO-8 package. It operates over a wide input voltage range of 7V to 40V, delivering an adjustable output voltage from 1.3V to 37V, and a maximum output current of 3A. The efficiency rate of the device can reach up to 97%.

In sum, the MC33063ADRG4 is an integrated voltage regulator in the PMIC – Voltage Regulators – DC DC Switching Regulators product family. It combines all the active components required to implement a step-down (buck) or voltage-inverting (boost) switching regulator that is capable of producing output currents up to 3A. The MC33063ADRG4 features a PWM control, inline current limit, output voltage tracking, inverted output capability, and automatic input under-voltage lockout. With a wide range of features and benefits, it is a suitable choice for a variety of applications, including those in the automotive sector.

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