MB39C011APFT-G-BNDE1

Voltage - Supply (Vcc/Vdd):	4.5 V ~ 17 V
Supplier Device Package:	16-TSSOP
Package / Case:	16-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-30°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Frequency - Switching:	500kHz
Series:	--
Output Phases:	1
Number of Outputs:	2
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tube

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MB39C011APFT-G-BNDE1 Application Field and Working Principle

MB39C011APFT-G-BNDE1 is a DC-DC switching controller developed by Fujitsu Semiconductor. It is designed for switching power supplies of AC/DC converters, charger adaptors and battery powered systems. This controller is grouped into the PMIC (Power Management IC) family and falls into the category of Voltage Regulators, DC DC Switching Controllers. The main features of the MB39C011APFT-G-BNDE1 DC-DC switching controller include a wide regulated output voltage range of 0.7 to 5.5V, fast response time of just 2µs and high voltage integration up to 70V. Additionally, due to its low power consumption, it requires no cooling solution and has overall low power consumption compared to discrete components.The working of MB39C011APFT-G-BNDE1 is dependent on two main methods of operation. Firstly, it is usually used in complex systems, where it is utilized as a stepping down device to reduce mains AC to low-voltage DC. Secondly, if the device is operating from a Battery, then the MB39C011APFT-G-BNDE1 DC-DC converter is used to regulate the output voltage from the battery.The MB39C011APFT-G-BNDE1 uses pulse frequency modulation for controlling the input signal and therefore controlling the output voltage. The converter is built with a system of switches and uses feedback to control the flow of current and voltage. By controlling these signals, the need for external components and space is reduced. When used as a step-down mode, the DC voltage is increased to the level needed. When used in a step-up mode, the input is increased to the desired output. The frequency used for pulse width modulation depends on the internal switch design of the device. In order to ensure the duty cycle is kept in order, the converter is built with a frequency detector which determines the input frequency and adjusts the duty cycle accordingly. The MB39C011APFT-G-BNDE1 features a very small size (1.5 x 1.5mm) compared to other similar products, as well as low-voltage operation down to 0.65V and a high voltage integrated maximum of 70V. It has an Ultra Low Input Current of 0.85mA at 0.7V, making it ideal for portable applications. Its Automatic Burst Mode Function is especially useful when a long period of no load is necessary. This allows the MB39C011APFT-G-BNDE1 to change to a lower power consumption state automatically. The MB39C011APFT-G-BNDE1 DC-DC switching controller is ideal for applications for power related components, like AC/DC adaptors, Battery powered systems, portable devices and mobile phones. It is able to increase efficiency, reduce complexity and decrease overall system cost. Thanks to its high accuracy, stable output voltage and fast response time, it is an ideal Solution for high current switching applications.

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