MAX8606ETD+T

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Introduction

The MAX8606ETD+T is a 3V to 4.5V Li+ battery charger and power-management integrated circuit (PMIC), designed to automatically charge and switch Li+ battery packs up to 4 cell. This article will look into the application field and working principle of this device.

Application Field

The MAX8606ETD+T is suitable for charging single-cell Li+ battery packs, such as LiIon, LiFePO4 and LiPoly, up to 4.5V. When set up with the correct parameters, it is capable of accurately charging Li+ battery packs and provide an safety current level to protect the battery against over-charge or over-dissipation. It is also designed for applications that require a primary charging over current protection (eOCP) circuit to protect the battery during charge and discharge cycles. It is commonly used in portable and consumer electronic devices such as portable media players, digital cameras, tablets and more.

Operation Principle

The MAX8606ETD+T is designed to be an automatic charger and power-management solution for Li+ battery packs up to 4.5V. Its main components are a low-dropout linear regulator (LDO) and a charge P-well circuit driven by a low-impedance signal sensing circuit. The LDO provides a stable regulation voltage on the output of the circuit. The charge P-well circuit is responsible for safely charging the battery while the low-impedance signal sensing circuit drives the LDO and the charge circuit. This signal sensing circuit monitors the voltage and current of the battery during the charging cycle, so that the battery can be safely charged while avoiding over-charge or over-discharge conditions.

Control Circuit

The MAX8606ETD+T consists of a low-dropout linear regulator (LDO), a charge P-well circuit and a control circuit. The LDO provides a stable regulation voltage which is used to drive the charge P-well circuit. The charge P-well circuit is responsible for safely charging the battery while the control circuit monitors the voltage and current of the battery during the charging cycle. The low-impedance signal sensing circuit is designed to avoid over-charge or over-discharge conditions and provide an OCP or OVP cycle if required.

Conclusion

The MAX8606ETD+T is a 3V to 4.5V Li+ battery charger and power-management integrated circuit (PMIC) suitable for charging Li+ battery packs, such as LiIon, LiFePO4, LiPoly and more. It consists of a low-dropout linear regulator (LDO), a charge P-well circuit and a control circuit. The LDO provides a stable regulation voltage which is used to drive the charge P-well circuit, while the control circuit monitors the voltage and current of the battery during the charging cycle. The low-impedance signal sensing circuit is designed to avoid over-charge or over-discharge conditions and provide an OCP or OVP cycle if required. This device is applicable in numerous applications, including portable media players, digital cameras and tablets.

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