Datasheet

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 I
2
C
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 I
2
C default from 100 mA takes
precedence over the pin setting.
Table 9. DIG_IO1 Operation
DIG_IO1 Function
0 100 mA input current limit or I
2
C programmed
value
1 500 mA input current limit or I
2
C programmed
value (or reprogrammed I
2
C value from 100 mA
default)
USB Compatibility
The ADP5062 features an I
2
C-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 I
2
C register default is 100 mA. An I
2
C write command to
the ILIM register overrides the DIG_IOx pins and the I
2
C
register default value can be reprogrammed for alternative
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, I
CHG
, 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
V
IN
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 I
2
C programmed value
300 mA limit for Chinese USB specification 300 mA input current limit or I
2
C programmed value
USB 2.0 100 mA limit for standard USB host or hub 100 mA input current limit or I
2
C programmed value
500 mA limit for standard USB host or hub 500 mA input current limit or I
2
C programmed value
USB 3.0
150 mA limit for superspeed USB 3.0 host or hub
150 mA input current limit or I
2
C programmed value
900 mA limit for superspeed, high speed USB host or hub
charger
900 mA input current limit or I
2
C 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 I
2
C programmed value