ADP5065 Analog Devices, ADP5065 Datasheet - Page 20

• 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

ADP5065
BATTERY DETECTION
Battery Level Detection
The
to detect an absent battery. The charger actively sinks and
sources current into the ISO_Bx/BAT_SNS node, and voltage
vs. time is detected. The sink phase is used to detect a charged
battery, whereas the source phase is used to detect a discharged
battery.
The sink phase (see Figure 32) sinks I
ISO_Bx/ BAT_SNS pins for a time, t
is below V
assumes no battery is present, and starts the source phase. If the
BAT_SNS exceeds the V
expires, the charger assumes the battery is present, and begins
a new charge cycle.
The source phase sources I
BAT_SNS pins for a time, t
V
no battery is present. If the BAT_SNS does not exceed the
BATH
ADP5065
before the t
BATL
when the t
charger features a battery detection mechanism
BATOK
timer expires, the charger assumes that
BATL
BATOK
SOURCE
BATOK
voltage when the t
timer expires, the charger
. If the BAT_SNS pin exceeds
current to ISO_Bx or the
BATOK
SINK
current from the
. If the BAT_SNS pin
BATOK
timer
Rev. A | Page 20 of 40
V
that a battery is present, and begins a new charge cycle.
Battery (ISO_Bx) Short Detection
A battery short occurs under a damaged battery condition or
when the battery protection circuitry is enabled.
On commencing trickle charging, the
tors the battery voltage. If this battery voltage does not exceed
V
declared and the charger is stopped by turning the battery
isolation FET off but the system voltage is maintained at
V
The trickle charge branch is active during the battery short
scenario, and trickle charge current to the battery is main-
tained until the 60 minute trickle charge mode timer expires.
After source phase, if the ISO_Bx or BAT_SNS level remains
below V
node can be shorted. As a result of the battery voltage being
low, trickle charging mode is initiated (see Figure 33). If the
BAT_SNS level remains below V
elapsed, the
BATH
BAT_SHR
ISO_STRK
voltage when the t
BATH
within the specified timeout period, t
by the linear regulator.
ADP5065
, either the battery voltage is low or the battery
assumes that the battery node is shorted.
BATOK
timer expires, the charger assumes
BAT_SHR
ADP5065
after t
BAT_SHR
BAT_SHR
charger moni-
Data Sheet
, a fault is
has