MP9942GJ-P

Voltage - Input (Max):	30V
Supplier Device Package:	TSOT-23-8
Package / Case:	SOT-23-8 Thin, TSOT-23-8
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	410kHz
Current - Output:	2A
Voltage - Output (Max):	28.5V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

MP9942GJ-P is an advanced mono-mode DC to DC buck switch that provides a high efficiency, fast transient response and cost effective solution for power supply design. It reduces component count and system cost, as well as footprint size. This type of switch is ideal for use in communication systems and embedded systems, such as cell phones, mobile phone base stations, set-top boxes, and network routers.

Application Field

The MP9942GJ-P has a typical input voltage range of 2.5V to 6.2V and a wide output voltage range of 0.4V to 4.75V. It is suitable for a wide range of consumer, communication and industrial applications. Its wide input/output voltage range makes it ideal for use in applications requiring low power consumption to reduce total power dissipation and maximize circuit efficiency.

Working Principle

The MP9942GJ-P is an advanced switching voltage regulator, which uses pulse width modulation (PWM) to regulate the output voltage. It has an internal power MOSFET switch which is driven by an internal oscillator. The oscillator frequency (fosc) is internally fixed but can be adjusted by external resistors and capacitors. The input current is sensed and compared to the reference voltage connected to the PWRON pin. The power MOSFET is turned on and off based on the PWRON voltage.The range of output current is limited by a programmable current limit circuit. This circuit is set by a precision resistor connected to the ILIM pin. The switch is turned off in case of current overload, thus limiting the output current. An internal bias voltage comparator monitors the output voltage and shuts off the switch if the output voltage is too low.

Conclusion

In conclusion, the MP9942GJ-P is an advanced and efficient DC to DC buck switch designed for a wide range of applications. It has wide input and output voltage ranges, fast transient response and low output ripple. It also has an adjustable programmable current limit and low power consumption. In addition, it reduces component count and system cost, making it an ideal choice for high efficiency power supply designs.

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