EC10016

General Description
EC10016 is a complete constant-current & constant
voltage linear charger for single cell lithium-ion and
Lithium-polymer batteries. Its SOT-23 package and low
external component count make EC10016 ideally suited
for portable applications. Furthermore, the EC10016 is
specifically designed to work within USB power
specification. At the same time, EC10016 can also be
used in the standalone lithium-ion and Lithium-polymer
battery chargers.
No external sense resistor is needed, and no
blocking diode is required due to the internal MOSFET
architecture. Thermal feedback regulates the charger
current to limit the die temperature during high power
operation or high ambient temperature. The charge
voltage is fixed at 4.22V, and the charge current can be
programmed externally with a single resistor. The
EC10016 automatically terminates the charge cycle
when the charge current drops to 1/10th the
programmed value after the final float voltage is
reached.
When the input supply (wall adapter or USB supply)
is removed, the EC10016 automatically enters a low
current stage, dropping the battery drain current to less
than 2μA. The EC10016 can be put into shutdown
mode, reducing the supply current to 20μA.
Other features include charge current monitor,
under-voltage lockout, automatic recharge and a status
pin to indicate charge termination and the presence of
an input voltage. EC10016 is interntionally designed to
have slightly negative Tempco. This provides extra
protection to Lithium battery during charging.
Application Diagram

Features
 Programmable Charge Current Up to 800 /1000mA
 No MOSFET, Sense Resistor or Blocking Diode
Required
 Constant-Current/Constant-Voltage Operationwith
Thermal Protection to Maximize Charge Rate
without Risk of Overheating
 Charges Single Cell Li-ion Batteries Directly from
USB Port
 Preset 4.22V Charge Voltage with +-1% Accuracy
 20μA Supply Current in Shutdown
 2.9V Trickle Charge Threshold
 Soft-Start Limits InrushCurrent
 Available in 5-Lead SOT-23 Package

Applications
 Cellular Telephones, PDA, MP3 Players
 Charging Docks and Cradles
 Bluetooth Applications
Pin Configuration


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規格是死的,設計是活的
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