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CN3065 Datasheet Preview

CN3065 Datasheet

Lithium Ion Battery Charger

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CONSONANCE
Lithium Ion Battery Charger for Solar-Powered Systems
CN3065
General Description:
The CN3065 is a complete constant-current /constant
voltage linear charger for single cell Li-ion and Li
Polymer rechargeable batteries. The device contains
an on-chip power MOSFET and eliminates the need
for the external sense resistor and blocking diode. An
on-chip 8-bit ADC can adjust charging current
automatically based on the output capability of input
power supply, so CN3065 is ideally suited for solar
powered system. Furthermore, the CN3065 is
specifically designed to work within USB power
specifications. Thermal feedback regulates the
charge current to limit the die temperature during
high power operation or high ambient temperature.
The regulation voltage is internally fixed at 4.2V
with 1% accuracy, it can also be adjusted with an
external resistor. The charge current can be
programmed externally with a single resistor. When
the input supply is removed, the CN3065
automatically enters a low power sleep mode ,
dropping the battery drain current to less than 3uA.
Other features include undervoltage lockout,
automatic recharge, battery temperature sensing and
charging/termination indicator.
The CN3065 is available in 8-pin DFN package.
Applications:
Solar Powered System
Digital Still Cameras
MP3 Players
Bluetooth Applications
Portable Devices
Chargers
Features:
On-chip 8-bit ADC can adjust charging current
automatically based on the output capability of
input power supply
Suitable for Solar-Powered System
On-chip Power MOSFET
No external Blocking Diode or Current Sense
Resistors Required
Preset 4.2V Regulation Voltage with 1%
Accuracy, adjustable with an external resistor
Precharge Conditioning for Reviving Deeply
Discharged Cells and Minimizing Heat
Dissipation During Initial Stage of Charge
Continuous Programmable Charge Current Up
to 1000mA
Constant-Current/Constant-Voltage Operation
with Thermal Regulation to Maximize Charge
Rate Without Risk of Overheating
Automatic Low-Power Sleep Mode When Input
Supply Voltage is Removed
Status Indication for LEDs or uP Interface
C/10 Charge Termination
Automatic Recharge
Battery Temperature Sensing
Available in DFN-8 Package
Pb-free Available
Pin Assignment
TEMP 1
ISET 2
GND 3
VIN 4
8 FB
CN3065
7 CHRG
6 DONE
5 BAT
www.consonance-elec.com
REV 1.0
1




CONSONANCE

CN3065 Datasheet Preview

CN3065 Datasheet

Lithium Ion Battery Charger

No Preview Available !

CONSONANCE
Typical Application Circuit
Input Power Supply 4.4V to 6V
22uF
330
4
VIN
FB 8
BAT 5
4.7uF
Green
LED
CN3065
Red
LED
7 CHRG
1
TEMP
6 DONE
GND
3
2
ISET
RISET
R1
Bat+
Bat-
NTC
Battery
Figure 1 Typical Application Circuit(Constant Voltage Level 4.2V)
Input Power Supply 4.4V to 6V
22uF
330
4
VIN FB 8
BAT 5
Rx
Green
LED
CN3065
Red
LED
TEMP 1
7 CHRG
6 DONE
ISET 2
GND
3
RISET
4.7uF
Bat+
Bat-
Battery
Figure 2 Application Circuit(Adjust Constant Voltage Level with Rx)
www.consonance-elec.com
REV 1.0
2


Part Number CN3065
Description Lithium Ion Battery Charger
Maker CONSONANCE
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CN3065 Datasheet PDF






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