Linear Li-Ion Battery Charger with Power
Path and USB Compatibility in LFCSP
Data Sheet
ADP5062
FEATURES
GENERAL DESCRIPTION
4 mm × 4 mm LFCSP package
Fully programmable via I2C
Flexible digital control inputs
The ADP5062 charger is fully compliant with USB 3.0 and the
USB Battery Charging Specification 1.2 and enables charging
via the mini USB VBUS pin from a wall charger, car charger, or
Up to 2.1 A current from an ac charger in LDO mode
Operating input voltage from 4.0 V to 6.7 V
Tolerant input voltage from −0.5 V to +20 V (USB VBUS)
Fully compatible with USB 3.0 and USB Battery Charging
Specification 1.2
Built-in current sensing and limiting
As low as 54 mΩ battery isolation FET between battery and
charger output
Thermal regulation prevents overheating
Compliant with JEITA 1 and JEITA 2 Li-Ion battery charging
temperature specifications
SYS_EN flag permits the system to be disabled until battery is at
the minimum required level for guaranteed system start-up
USB host port.
The ADP5062 operates from a 4 V to 6.7 V input voltage range
but is tolerant of voltages up to 20 V thereby alleviating concerns
about USB bus spikes during disconnect or connect scenarios.
The ADP5062 features an internal FET between the linear
charger output and the battery. This permits battery isolation
and, hence, system powering under a dead battery or no battery
scenario, which allows for immediate system function on connec-
tion to a USB power supply.
Based on the type of USB source, which is detected by an external
USB detection chip, the ADP5062 can be set to apply the correct
current limit for optimal charging and USB compliance.
The ADP5062 has three factory-programmable digital input/out-
put pins that provide maximum flexibility for different systems.
These digital input/output pins permit combinations of features
such as, input current limits, charging enable and disable, charging
current limits, and a dedicated interrupt output pin.
APPLICATIONS
Digital still cameras
Digital video cameras
Single cell Li-Ion portable equipment
PDAs, audio, and GPS devices
Portable medical devices
Mobile phones
TYPICAL APPLICATION CIRCUIT
ADP5062
SYSTEM
ISO_Sx
VBUS
VIN
AC OR
USB
CBP
C3
22µF
C4
10µF
C1
10nF
SCL
SDA
ISO_Bx
CHARGER
CONTROL
BLOCK
C2
22µF
BAT_SNS
DIG_IO1
DIG_IO2
DIG_IO3
Li-ion
+
THR
SYS_EN
ILED
VLED
AGND
Figure 1.
Rev. B
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