PT8A2704WEX

Series:	--
Part Status:	Active
Battery Chemistry:	Multi-Chemistry
Number of Cells:	1 ~ 8
Current - Charging:	Constant
Programmable Features:	--
Fault Protection:	--
Charge Current - Max:	--
Battery Pack Voltage:	--
Voltage - Supply (Max):	5.5V
Interface:	--
Operating Temperature:	0°C ~ 70°C (TA)

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PT8A2704WEX Application Field and Working Principle

The PT8A2704WEX is a Li-ion battery charger with power management integrated circuit (PMIC) technology. This charger is specifically tailored for lithium-ion battery applications. With a built-in power management IC, it provides a current regulated charging algorithm that maximizes charge cycle life and minimizes charge time.

Features

The PT8A2704WEX is a single-cell, constant-current/constant-voltage (CCCV) Li-ion battery charger with PMIC technology. It is specifically designed to charge Li-ion batteries with high accuracy and a wide input voltage range from 3.2V to 6.7V. The low output ripple ensures a good quality charge for a longer life span. Some of the key features of this charger include step-down charging algorithm, semi-instantaneous current limitation, over-temperature shutdown and protection, and over-voltage protection.

Applications

The PT8A2704WEX is suitable for a wide range of applications including consumer electronics, digital cameras, portable power sources, medical devices and other mobile electronics. In particular, it is ideal for applications where fast charging and/or high accuracy is required.

Working Principle

When the charger is under normal operating conditions, the PT8A2704WEX enters constant-current mode in which the charging current is regulated by a charge controller to keep the battery voltage at a specific level. This process is repeated until the battery reaches a predetermined upper voltage level. At this point, the charger enters constant-voltage mode and the output voltage is regulated to a set point until the target charge current is achieved.When the charger reaches its upper charge voltage level, it enters a taper mode where the charging current is gradually reduced in a controlled manner until the target charge current is achieved. Finally, a charge termination algorithm is used to ensure that the battery is fully charged and protect it from overcharging. Overall, the PT8A2704WEX is a highly efficient, reliable and safe charger for Li-ion batteries with PMIC technology. It enables fast and accurate charging of Li-ion batteries with maximum charge cycle life, minimum charge time and low output ripple. It is suitable for a variety of applications and can be used in a wide range of operating temperature conditions.

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