Looking for a Battery Charger IC

Battery Management
1

Hello

I’m looking for a charger IC but with specials needs for my application.

  • Charging 1 cell type Lithium polymer
  • The maximum power available at the input is a regulated 5V 1.6W
  • The system Load may consume more than 4W at full power but much less in idle mode ( 330mW)
  • Current limiting depending the mode is preferable
  • Power path is may be needed
  • At full power the charger must disconnect the main power to prioritize the battery
  • GPIO are available to change mode
  • A non BGA style package is preferable

Thanks for helping me

2

Hello daniel.zanardi,

please look into the following part MP2667 | 5V USB, 1000mA, I2C-Controlled Linear Charger with Power Path Management for Single-Cell, Li-Ion Battery in QFN Package | MPS.

This has i2c capability where you should be able to make adjustments. I wasn’t able to find a part with GPIO pins.

3

Interessting but all setup is by I2C

To be more precise due to Main power input restriction 2W / 5V

Mode 1: The system Load is Idle ( low power 50ma )

In this mode i 'd like to charge the battery and power the load at the same time. ( charging current approx 300mA)

Mode 2 : Operationnal : The system Load is awake at full power (2A from the batteries )

In this mode i want the charger to be disconected and no power from the main input should power the Load but only the battery.

IS the part MP2633 is suitable ?

4

The charge current can be set through the Iset resistor. This part supports up to 1.5A out at Vsys through boost mode.

5

Is Vsys is enabled while charging as described in MODE 1: ?
charging current limited to 300mA and Vsys Load is about 50ma ?

Is the EN pin has to be tied high by Vsys to avoid to be locked in sleep mode ?

Do you have a part with the same features but with more current at Vsys ?