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AUR9807 Datasheet

Single-cell Li-Ion Charger IC

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NOT RECOMMENDED FOR NEW DESIGN
Data Sheet
Single-cell Li-Ion Charger IC with System Power Management AUR9807
General Description
The AUR9807 is a single-cell Li-ion charger IC with
system power management feature. It charges the
battery and power the system simultaneously. The
maximum charging current (up to 1.5A) is set by
external resistor for fast charging. The output
voltage for the system is regulated to a nominal
value (three different versions available: 4.4V, 5V or
6V); the actual value of the output voltage depends
on the input voltage from the adapter, the charging
current and the system loading. With the decrease of
the input voltage or the increase of the system
loading current, the output voltage drops. When the
output voltage drops to a predetermined value
(VAPM-REG), the Active Power Management function
is activated and tries to maintain the output voltage
at VAPM-REG; the AUR9807 will suffice the system
loading with first priority and reduce the charging
current temporarily, i.e. under heavy load condition,
the AUR9807 charges the battery with the remaining
available current to keep the output voltage at VAPM.
In this manner, the charge and discharge cycle of the
battery can be reduced.
It is possible that the AUR9807 fails to maintain the
output voltage at VAPM-REG; for example, when the
system loading current exceeds the capability of the
current-limiting AC adapter. In this scenario, the
output voltage drops to the battery voltage, and the
system is allowed to draw current from the battery.
The AUR9807 is available in QFN-4.5×3.5-20
package.
Features
QFN Package
Active Power Management (APM) for
Simultaneously Powering the System and
Charging the Battery
Total Current Supported Up to 2 Amperes
(System Loading Having Higher Priority on the
Budget)
Automatic Power Source Selection (AC Adapter
or Battery)
• 40mΩ Power Path for the Battery to Supply the
System Power Efficiently
Junction Temperature Detection and Thermal
Regulation During Charging Process
External LED Indicating Charger and Power
Good Status as Well as Fault Condition
Thermal, Short-Circuit, and Reverse Current
Protection
Short-Circuit Protection in the Low Power
Consumption Sleep Mode
SYSOFF Function to Cut Off the Path Between
the System and the Battery
Built-in Over Voltage Protection up to 18V
Applications
Battery-Powered Devices or Equipment
Mobile Phones, Digital Cameras and MP3
Players
Radios, Other Hand-Held Games and Instruments
Solar Power System
QFN-4.5×3.5-20
Figure 1. Package Type of AUR9807
AUR9807
Document number: DS37580 Rev. 1 - 3
1 of 23
www.diodes.com
October 2014
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

AUR9807 Datasheet

Single-cell Li-Ion Charger IC

No Preview Available !

NOT RECOMMENDED FOR NEW DESIGN
Data Sheet
Single-cell Li-Ion Charger IC with System Power Management AUR9807
Pin Configuration
D Package
(QFN-4.5×3.5-20)
Pin 1 Mark
STAT1 2
STAT2 3
IN 4
BAT 5
BAT 6
ISET2 7
MODE 8
CE 9
1 20
Exposed
Pad
10 11
19 GND
18 /PG
17 OUT
16 OUT
15 OUT
14 TMR
13 APM
12 TS
Figure 2. Pin Configuration of AUR9807 (Top View)
AUR9807
Document number: DS37580 Rev. 1 - 3
2 of 23
www.diodes.com
October 2014
© Diodes Incorporated


Part Number AUR9807
Description Single-cell Li-Ion Charger IC
Maker BCD
PDF Download

AUR9807 Datasheet PDF






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