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PDF AUR9801C Data sheet ( Hoja de datos )
| Número de pieza | AUR9801C | |
| Descripción | Li-ion/Li Polymer Battery Charger | |
| Fabricantes | BCD | |
| Logotipo |  |
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Data Sheet
Li-ion/Li Polymer Battery Charger
AUR9801C
General Description
The AUR9801C is a highly-integrated battery charger
for single-cell Li-ion or Li-polymer batteries capable
of operating with an input voltage reached 2.5V. It is
a complete charger device designed to work with an
USB port or 5V output AC adapter.
The AUR9801C operates with CC (constant current)
mode and CV (constant voltage) mode profiles. A
low-current preconditioning charge mode is also
provided as a trickle charging operation. The charge
current is programmable up to 1A with an external
resistor or a logic input. The charge voltage is 1%
accurate over the full application range.
When operating with a current-limited adapter, the
charger minimizes the thermal dissipation with
pulsed operations to prevent overheat conditions that
is commonly occurred with conventional linear
chargers. The AUR9801C reduces charge current for
thermal fold-back to ensure product safe operation.
The charger automatically re-charges the battery
when the battery voltage drops blow a recharge
threshold. The chip includes a safety timer for setting
the fast charge time limit in case of charging a dead
battery.
The AUR9801C is available in standard
WDFN-3×3-10 package.
Features
• Complete Charger for Single-cell Li-ion
Batteries
• Charges from either AC Adapter or USB Port
• Integrated Power Pass Device with Current
Sensing
• No External Blocking Diode Required
• Pre-charge Condition with Safety Timing
• 1% Charger Voltage Accuracy
• Programmable Current Limit up to 1A
• Sleep Mode for Power Saving
• Charge Current Thermal Fold-back
• Stand-alone or Integrated Charger
• Ambient Temperature Range: -40°C to 85°C
• Thermally-enhanced WDFN-3×3-10 Package
• Pb-free Plus Anneal Available (RoHS
Compliant)
Applications
• PDAs, Cell Phones and Smart Phones
• Digital Camera, MP3 and Handheld Gamming
• Portable Instruments Including Medical
Handhelds
• Self-charging Battery Packs
• Stand-alone Chargers or USB Port Chargers
Aug. 2012 Rev. 1. 0
WDFN-3×3-10
Figure 1. Package Type of AUR9801C
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
Li-ion/Li Polymer Battery Charger
AUR9801C
Electrical Characteristics
VIN=5V and TA=25°C for the typical values. The maximum and minimum values are over -40°C to 85°C
Ambient Temperature with a supply voltage in the range of 4.6V to 5.5V, unless otherwise specified.
Parameter
Symbol
Conditions
Power-on Reset
VIN Rising Voltage
VIN Falling Voltage
Standby Current
VBAT Pin Sink Current
ISTANDBY
VIN Pin Supply Current
IIN
VIN-VBAT Offset Voltage
Offset Voltage
VOS
Voltage Regulation
Output Voltage
VBAT
Dropout Voltage
Charge Current
Constant Charge Current
ICHG
Trickle Charge Current
ITRICKLE
End-of-Charge Threshold
V2P8 Pin Output
IMIN
V2P8 Pin Output Voltage
V2P8
Recharge Threshold
Recharge Threshold
Recharge Threshold
Hysteresis
VRECHG
VRECHGHY
S
Trickle Charge Threshold
Trickle Threshold
Voltage
Trickle Threshold
Hysteresis
VMIN
VMINHYS
VIN floating
EN=LOW
VBAT floating
EN pulled low
VBAT floating
EN floating
or
and
and
VBAT=4.2V,
IBAT=20mA,
use /STATUS pin
Tested at 50mA load,
5V input, and 25°C
VBAT=4.0V,
Charge Current=0.35A
RIREF=100kΩ,
VBAT=3.0V to 4.0V
RIREF=100kΩ,
VBAT=2.5V
RIREF=100kΩ
Load current less than
1mA
Min
3.2
2.25
45
4.213
760
70
2.8
3.97
2.7
50
Typ
3.6
2.5
150
80
4.256
175
800
120
80
2.9
4.05
50
2.8
100
Max
3.9
2.7
3.3
1
100
4.299
840
90
3.0
4.13
2.9
150
Units
V
V
µA
µA
mA
mV
V
mV
mA
mA
mA
V
V
mV
V
mV
Aug. 2012 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
5 Page 
Li-ion/Li Polymer Battery Charger
Flow chart
Data Sheet
AUR9801C
Aug. 2012 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
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| PDF Descargar | [ Datasheet AUR9801C.PDF ] | |
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