Linear LiFePO4 Battery Charger with
Power Path and USB Compatibility in LFCSP
ADP5063
Data Sheet
FEATURES
GENERAL DESCRIPTION
Default charging termination voltage at 3.6 V
The ADP5063 charger is fully compliant with USB 3.0 and the
Fully compatible with USB 3.0 and USB Battery Charging 1.2
Compliance Plan Specification
Operating input voltage from 4 V to 6.7 V
Tolerant input voltage from −0.5 V to +20 V (USB VBUS)
Fully programmable via I2C
Flexible digital control inputs
Up to 2.1 A current from an ac charger in LDO mode
Built-in current sensing and limiting
As low as 55 mΩ battery isolation FET between battery and
charger output
Thermal regulation prevents overheating
Compliant with JEITA1 and JEITA2 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
4 mm × 4 mm LFCSP package
USB Battery Charging 1.2 Compliance Plan Specification, and
enables charging via the mini USB VBUS pin from a wall charger,
car charger, or USB host port.
The ADP5063 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 disconnection or connection scenarios.
The ADP5063 features an internal field effect transistor (FET)
between the linear charger output and the battery. This permits
battery isolation and, therefore, system powering under a dead
battery or no battery scenario, which allows immediate system
function upon connection to a USB power supply.
Based on the type of USB source, which is detected by an external
USB detection chip, the ADP5063 can be set to apply the correct
current limit for optimal charging and USB compliance.
The ADP5063 has three factory-programmable digital input/out-
put pins that provide maximum flexibility for different systems.
These digital input/output pins permit a combination of features,
such as input current limits, charging enable and disable, charging
current limits, and a dedicated interrupt output pin.
APPLICATIONS
Single cell lithium iron phosphate (LiFePO4) portable
equipment
Portable medical devices
Portable instrumentation devices
Portable consumer devices
TYPICAL APPLICATION CIRCUIT
ADP5063
SYSTEM
ISO_Sx
VBUS
VINx
CBP
AC OR
USB
C3
22µF
C4
10µF
C1
100nF
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. 0
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