MC34703PNB Allicdata Electronics
Allicdata Part #:

MC34703PNB-ND

Manufacturer Part#:

MC34703PNB

Price: $ 0.00
Product Category:

Integrated Circuits (ICs)

Manufacturer: NXP USA Inc
Short Description: IC POWER SUPPLY QUICC 33-QFN
More Detail: Power Supplies PMIC 33-PQFN (10x10)
DataSheet: MC34703PNB datasheetMC34703PNB Datasheet/PDF
Quantity: 1000
Stock 1000Can Ship Immediately
Specifications
Series: --
Packaging: Tube 
Part Status: Obsolete
Applications: Power Supplies
Current - Supply: 60mA
Voltage - Supply: 2.8 V ~ 13.5 V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 33-PowerQFN
Supplier Device Package: 33-PQFN (10x10)
Base Part Number: MC34703
Description

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MC34703PNB application field and working principle

The MC34703PNB is a highly integrated, fast response and cost-effective power management integrated circuit (PMIC). It can provide advanced power management control in two-phase system applications.

The MC34703PNB includes 1.1V and 1.8V low-noise regulation, 0.9V regulator to meet micro-processor core voltage requirements, 3.3A pulse-width-modulation (PWM) controllers and current-mode fixed frequency constant frequency synchronous rectification, fast response over-current protection, and pre-bias start up.

Applications of MC34703PNB:

The MC34703PNB is widely used in research and development, high-end handheld device, server, telecom, industrial automation, automotive and power module and other application fields, and it can work as a power supply for two phases.

It can provide regulated output, precise dynamic frequency adjustment and regulated buck PWM controller. It can be used as the power supply for micro-processor core voltage and other related peripheral power supply.

Working Principle:

The MC34703PNB contains two independent buck regulator channels, each with an adjustable fixed-frequency oscillator. Each channel provides an adjustable low-noise regulator and a PWM controlled buck converter capable of delivering 3.3A of continuous output current. The low-noise regulator provides up to 2mA of output current for micro-processor and peripheral power supply. The PWM controlled buck converter utilizes a synchronous rectifier to generate a regulated output voltage from an input voltage of up to 28V.

The MC34703PNB provides over-current protection by monitoring the current through both channels. The over-current sense circuit is comprised of an over-current threshold trip filter and an over-current trip latch. The trip latch is released through the use of an over-current clear pulse, allowing the MC34703PNB to operate without interruption in the event of an over-current condition.

The MC34703PNB also provides under-voltage lockout, adjustable soft start and timer protection functions. The adjustable soft start feature allows the user to select a slow rising waveform during startup to reduce surge currents. The adjustable timer protection feature allows the user to set a time limit to prevent the unit from staying in an over-current state for an extended period of time. This feature is especially helpful when troubleshooting problems caused by short circuits.

Conclusion:

The MC34703PNB is a cost-effective, highly integrated power management integrated circuit (PMIC) with advanced features to improve system efficiency and reliability. The MC34703PNB provides two independent regulated buck converters, an adjustable low-noise regulator, over-current protection, under-voltage lockout, adjustable soft start and timer protection features. With its built-in features and integrated design, the MC34703PNB is ideal for a variety of applications, including research and development, handheld devices, servers, telecom, industrial automation, automotive and power modules.

The specific data is subject to PDF, and the above content is for reference

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