ADP5062ACPZ-2-R7 datasheet(18/44 Pages) AD

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ADP5062

Data Sheet

Rev. B | Page 18 of 44

The ADP5062 includes a number of significant features to

optimize charging and functionality including

•

Thermal regulation for maximum performance.

•

USB host current limit.

•

Termination voltage accuracy: ±1%.

•

Battery thermistor input with automatic charger shutdown

in the event that the battery temperature exceeds limits

(compliant with the JEITA Li-Ion battery charging

temperature specification).

•

Three external pins (DIG_IO1, DIG_IO2, and DIG_IO3)

that directly control a number of parameters. These pins

are factory programmable for maximum flexibility. They

can be factory programmed for functions such as

•

Enable/disable charging.

•

Control of 100 mA or 500 mA input current limit.

•

Control of 1500 mA input current limit.

•

Control of the battery charge current.

•

Interrupt output pin.

See the Digital Input and Output Options section for details.

CHARGER MODES

Input Current Limit

The VINx input current limit is controlled via the internal I2C

ILIM bits. The input current limit can also be controlled via the

DIG_IO1 pin (if factory programmed to do so) as outlined in

Table 9. Any change in the I2C default from 100 mA takes

precedence over the pin setting.

Table 9. DIG_IO1 Operation

DIG_IO1

Function

100 mA input current limit or I2C programmed

value

500 mA input current limit or I2C programmed

value (or reprogrammed I2C value from 100 mA

default)

USB Compatibility

The ADP5062 features an I2C-programmable input current

limit to ensure compatibility with the requirements listed in

Table 10. The current limit defaults to 100 mA to allow com-

patibility with a USB host or hub that is not configured.

The I2C register default is 100 mA. An I2C write command to

the ILIM register overrides the DIG_IOx pins and the I2C

requirements.

When the input current-limit feature is used, the available input

current may be too low for the charger to meet the programmed

charging current, ICHG, thereby reducing the rate of charge and

setting the VIN_ILIM flag.

When connecting voltage to VINx without the proper voltage

level on the battery side, the high voltage blocking mechanism

is in a state wherein it draws only the current of <1 mA until

VIN reaches the VIN_OK level.

The ADP5062 charger provides support for the following con-

nections through the single connector VINx pin, as shown in

Table 10.

Table 10. Input Current Compatibility with Standard USB Limits

Mode

Standard USB Limit

ADP5062 Function

USB (China Only)

100 mA limit for standard USB host or hub

100 mA input current limit or I2C programmed value

300 mA limit for Chinese USB specification

300 mA input current limit or I2C programmed value

USB 2.0

100 mA limit for standard USB host or hub

100 mA input current limit or I2C programmed value

500 mA limit for standard USB host or hub

500 mA input current limit or I2C programmed value

USB 3.0

150 mA limit for superspeed USB 3.0 host or hub

150 mA input current limit or I2C programmed value

900 mA limit for superspeed, high speed USB host or hub

charger

900 mA input current limit or I2C programmed value

Dedicated Charger

1500 mA limit for dedicated charger or low/full speed USB host

or hub charger

1500 mA input current limit or I2C programmed value

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