ADP5065 Analog Devices, ADP5065 Datasheet - Page 17

• Manufacturer Part Number: ADP5065
• Description: Fast Charge Battery Management with Power Path and USB Compatibility
• Manufacturer: Analog Devices

Specifications of ADP5065

• Product Description: Fast Charge Battery Management with Power Path and USB Compatibility
• Switching/linear: Switching
• Cell Type: Li-Ion
• Final Voltage Options: 4.2
• Accuracy Over Temp (%): 0.3%
• Temp Range: -40 to +125°C
• Package: WLCSP-20
• Active For Param Search: Yes

Data Sheet
The
to optimize charging and functionality, including
•
•
•
•
•
•
•
CHARGER MODES
Input Current Limit
The VINx input current limit is controlled via an internal I
ILIM register. The input current limit can also be controlled
via the IIN_EXT pin as outlined in Table 7. Any change in the
I
Table 7. IIN_EXT Operation
IIN_EXT
0
1
USB Compatibility
The
connections through the single connector VINx pin.
The
ensure compatibility with the requirements listed in Table 8.
The current limit defaults to 100 mA to allow compatibility
with a USB host or hub that is not configured.
The I
to the ILIM register overrides the IIN_EXT pin and the I
register default value can be reprogrammed for alternative
requirements.
When the input current limiting feature is used, the available
input current may be too low for the charger to meet the pro-
grammed charging current, I
reduced. In this case, the VIN_ILIM flag is set.
When connecting voltage to VINx without having the proper
voltage level on the battery side, the HV blocking part is in a
state wherein it draws only 1.3 mA (typical) of current until
the V
2
C default from 100 mA dominates over the pin setting.
ADP5065
ADP5065
ADP5065
Thermal regulation for maximum performance.
USB host current-limit accuracy: ±5 %.
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.)
Offloads processor to manage external pin (TRK_EXT)
control to enable/disable trickle charging.
Direct external pin (IIN_EXT) control of 100 mA or
500 mA input current limit.
Optional external resistor programming input, V_WEAK_
SET, which is used for setting the V
the battery reaches the V
pulls down the SYS_EN_OK open-drain output flag. The
flag can be used to hold off system turn on until the battery
is at the minimum required level for a guaranteed system
startup.
2
IN
C register default is 100 mA. An I
has reached the VIN_OK level.
Function
100 mA input current limit or I
value
500 mA input current limit or I
value (or reprogrammed I
default)
also includes a number of significant features
charger provides support for the following
features a programmable input current limit to
CHG
WEAK
, and the rate of charge is
threshold, the
2
2
C value from 100 mA
WEAK
C write command
2
2
C programmed
C programmed
threshold. When
ADP5065
2
C
Rev. A | Page 17 of 40
2
C
Mode
USB
(China
Only)
USB 2.0
USB 3.0
Dedicated
Charger
Table 8. Input Current Compatibility with Standard USB
Limits
Trickle Charge Mode
A deeply discharged Li-Ion cell may exhibit a very low cell
voltage making it unsafe to charge the cell at high current rates.
The
battery pack protection circuit and lift the cell voltage to a safe
level for fast charging. A cell with a voltage below V
charged with the trickle mode current, I
charging mode, the CHARGER_STATUS register is set.
During trickle charging, the ISO_Sx node is regulated to
V
FET is off, which means the battery is isolated from the
system power supply.
Trickle charging can be controlled via the TRK_EXT external
pin (see Table 9). Note that any change in the I
dominates over the pin setting.
Table 9. TRK_EXT Operation
Trickle Charge Mode Timer
The duration of trickle charge mode is monitored to ensure
the battery is revived from its deeply discharged state. If
trickle charge mode runs for longer than 60 minutes without
the cell voltage reaching V
and charging stops. The fault condition is asserted on the
CHARGER_STATUS register, allowing the user to initiate
the fault recovery procedure specified in the Fault Recovery
section.
TRK_EXT
0
1
ISO_STRK
ADP5065
by the dc-to-dc converter and the battery isolation
Standard USB Limit
100 mA limit for stan-
dard USB host or hub
300 mA limit for
Chinese USB
specification
100 mA limit for stan-
dard USB host or hub
500 mA limit for stan-
dard USB host or hub
150 mA limit for
super speed USB 3.0
host or hub
900 mA limit for
super speed, high
speed USB host or
hub charger
1500 mA limit for
dedicated charger or
low/full speed USB
host or hub charger
charger uses a trickle charge mode to reset the
Trickle charge enabled
Trickle charge disabled
Function
TRK_DEAD
, a fault condition is assumed
ADP5065
100 mA input current limit
or I
300 mA input current limit
or I
100 mA input current limit
or I
500 mA input current limit
or I
150 mA input current limit
or I
900 mA input current limit
or I
1500 mA input current limit
or I
2
TRK_DEAD
2
2
2
2
2
2
C programmed value
C programmed value
C programmed value
C programmed value
C programmed value
C programmed value
C programmed value
2
. During trickle
C EN_TRK bit
Function
TRK_DEAD
ADP5065
is