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PDF CN3052A Data sheet ( Hoja de datos )
| Número de pieza | CN3052A | |
| Descripción | 500mA USB-Compatible Lithium Ion Battery Charger | |
| Fabricantes | CONSONANCE | |
| Logotipo |  |
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CONSONANCE
500mA USB-Compatible Lithium Ion Battery Charger
CN3052A
General Description:
The CN3052A 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. Furthermore, the CN3052A is specifically
designed to work within USB power specifications.
Its low external component count makes CN3052A
ideally suited for portable applications.
Thermal feedback regulates the charge current to
limit the die temperature during high power
operation or high ambient temperature. The
regulation voltage is fixed at 4.2V with 1% accuracy.
The charge current can be programmed externally
with a single resistor. When the input supply (wall
adapter or USB supply) is removed, the CN3052A
automatically enters a low power sleep mode ,
dropping the battery drain current to less than 3uA.
Other features include undervoltage lockout,
automatic recharge, chip enable function, battery
temperature sensing and a
pin to indicate
charge status.
The CN3052A is available in a thermally enhanced
8-pin SOP package.
Applications:
Cellular Telephones
Digital Still Cameras
MP3 Players
Bluetooth Applications
Portable Devices
USB Bus-Powered Chargers
Features:
Charges Single Cell Li-Ion Batteries Directly
from USB Port or AC Adaptor
On-chip Power MOSFET
No external Blocking Diode or Current Sense
Resistors Required
Preset 4.2V Regulation Voltage with 1%
Accuracy
Precharge Conditioning for Reviving Deeply
Discharged Cells and Minimizing Heat
Dissipation During Initial Stage of Charge
Continuous Programmable Charge Current Up
to 500mA
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
Chip Enable Input
Available in SOP8 Package
Pb-free Available
Pin Assignment
TEMP 1
ISET 2
GND 3
VIN 4
8 CE
7 CHRG
CN3052A
6 FAULT
5 BAT
www.consonance-elec.com
REV 1.4
1
1 page  
Electrical Characteristics
(VIN=5V, TA=－40℃ to 85℃, Typical Values are measured at TA=25℃,unless otherwise noted)
Parameters
Symbol
Test Conditions
Min Typ Max
Input Supply Voltage VIN
4.35 6
CE=VIN, No load at BAT pin 400 650 950
Operating Current
IVIN Chip disable mode, CE=GND
4
Undervoltage Lockout Vuvlo VIN rising
3.95 4.21
Undervoltage Lockout
Huvlo
Hysteresis
0.1
Regulation Voltage
VREG
CN3052A
RISET=3.6K,constant
mode, CN3052A
4.158
current
400
4.2 4.242
500 600
BAT pin Current
IBAT
RISET=3.6K, VBAT＝2.3V
CN3052A
25
50
VBAT=VREG, standby mode 1.75 3.5
CE=GND, disable mode
75
7
3
VIN=0V, sleep mode
3
Precharge Threshold
Precharge Threshold VPRE Voltage at BAT pin rising 2.9 3.0 3.1
Precharge Threshold
Hysteresis
HPRE
0.1
Charge Termination Threshold
Charge Termination
Vterm Measure voltage at ISET pin 0.18 0.22 0.26
Threshold
Recharge Threshold
Recharge Threshold
Sleep Mode
VRECH
VREG－0.1
Sleep Mode Threshold
Sleep mode Release
Threshold
ISET Pin
VSLP
VSLPR
VIN from high to low, measures
the voltage (VIN－VBAT)
VIN from low to high, measures
the voltage (VIN－VBAT)
40
90
ISET Pin Voltage
Precharge mode
VISET Constant current mode
0.2
2.0
TEMP PIN
High Input Threshold
Low Input Threshold
TEMP input Current
CE Pin
VHIGH
VLOW
TEMP to VIN or to GND
80 82.5
42.5 45
0.5
Logic Input Low
Logic Input High
CE Pin Current
VCEL
VCEH
ICEL
ICEH
CE voltage falling, Chip disabled
CE voltage rising, Chip enabled
CE=GND, VIN=6V
CE=VIN=6V
2.0
－1
0.75
1
Unit
V
uA
V
V
V
mA
uA
V
V
V
V
mv
mv
V
%VIN
%VIN
uA
V
V
uA
REV 1.4
5
5 Page 
Package Information
Consonance does not assume any responsibility for use of any circuitry described. Consonance reserves the
right to change the circuitry and specifications without notice at any time.
REV 1.4
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CN3052A.PDF ] | |
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