MP26023DQ-LF-P

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Battery Chemistry:	Lithium-Ion
Number of Cells:	1
Current - Charging:	Constant - Programmable
Programmable Features:	Current
Fault Protection:	Over Current, Over Temperature, Over Voltage
Charge Current - Max:	1A
Battery Pack Voltage:	4.2V
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	-40°C ~ 85°C (TA)
Package / Case:	10-VFDFN Exposed Pad
Supplier Device Package:	10-QFN (3x3)

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Introduction

MP26023DQ-LF-P is a Monolithic Power Integrated Circuit (IC) from Monolithic Power Systems Inc., a leading total-power solutions provider for audio, video, mobile and computing applications. It is a step-down type battery charger that targets a wide range of applications by providing high efficiency, low noise, and long battery life. This IC is designed to provide up to a 2.0A output current and is capable of charging batteries down to their deep discharge lowest voltages.

Features and Benefits

MP26023DQ-LF-P has a few features that make it well-suited for a wide range of battery charging applications. It supports a wide range of battery chemistries, including Li-Ion, Li-polymer and NiCd/NiMH. This IC also provides excellent thermal performance, allowing it to charge batteries at their maximum C rate even at higher loads. Additionally, it has a low output rippled, ensuring a high efficiency and low EMI. It also contains Short-Circuit Protection and Over Temperature Protection for added reliability and safety.

MP26023DQ-LF-P Applications

MP26023DQ-LF-P can be used in a wide range of battery charging applications, including portable handheld devices, mobile phones and other consumer electronics. It is also suitable for use in industrial applications where long battery life and time to full-charge are of utmost importance. Examples of industrial applications include uninterruptible power supplies, automotive electronics and navigation systems.

MP26023DQ-LF-P Working Principle

The MP26023DQ-LF-P consists of a Step-Down Controller, a Power MOSFET and several other components. The Step-Down Controller regulates the output current of the charger, by regulating the On/Off time of the Power MOSFET. The output current is set by a resistor connected between the Current Sense and Control voltage pins of the IC. When the battery is Empty or nearly Empty, the current will be set to the minimum current value, by the Internal Current Set Resistor. As the battery begins to charge, the voltage increases and the current set point adjusts upwards to maintain a constant current. The controller will then switch the MOSFET On and Off at a fixed frequency to maintain a constant output current until the battery is fully charged. When the battery is fully charged, the charger will switch to a constant voltage mode, where it will maintain the output voltage until the battery is removed or the load increases.

Conclusion

MP26023DQ-LF-P is an excellent choice for applications where high efficiency and long battery life are paramount. Its wide range of applications, along with its simple and safe operating principle make it an ideal choice for a variety of applications. It has been designed for maximum thermal performance and its low output ripple makes it an efficient and reliable battery charger.

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