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Low power pmic with 3 outputs

MI
Intellectual 560 points
Other Parts Discussed in Thread: BQ25713, BQ24773, BQ24610

1. Have lithium ion battery with input range:
a) 2.7V-4.25V
b) 5.4V-8.50V
c) 10.8V-17.0V

Can select any one of three depending upon suitablity in seleecting the IC.

2. Three Output required:
a) 12V/1A
b) 9V/1A
c) 5V/1A

3. Battery need to be charged also, so depending upon selection in point1, below are charging required with below:
a) 4.25V/2933mA
b) 8.5V/1466mA
c) 17.0V/733mA

4. PMIC needs to be low powered as this is battery application

5. If this is available then good otheriwse can add external mcu: Switch input, 4 led outputs, enable/disable for all outpts on at once or all off at once

any suitable pmic for this?

Edit: this is consumer application only. 

  • 0
    TI__Mastermind 30310 points

    MI, 

    It sounds like you need a battery charger that can charge 1, 2, or 4 cells in series. PMICs do not have this capability. I will need to re-assign your question to the Battery Management team for a recommendation.

  • 0 in reply to Brian Berner
    TI__Guru**** 167196 points

    Hi MI,

    We have battery chargers that charge the batteries you mention above as shown below.   Our charger's NVDC powerpath chargers  provide a minimum SYS voltage but that voltage eventually tracks the battery voltage as the battery charges.

    BQ25713 - host controlled via I2C 1-4S buck and boost charger with external FETs - required if your input source voltage is < 4S battery

    BQ24773 -  host controlled via I2C 1-4S buck and boost charger with external FETs - input power > 4S battery

    BQ24610 - standalone (resistor set) 1-6S buck only charger with external FETs - input power > 4S battery

    You may still need a dc/dc converter to provide a regulated output from the charger's output (i.e. the battery).

    Regards,
    Jeff