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
(V
APM-REG
), the Active Power Management function
is activated and tries to maintain the output voltage
at V
APM-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 V
APM
.
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 V
APM-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
NOT RECOMMENDED FOR NEW DESIGN
Data Sheet
Single-cell Li-Ion Charger IC with System Power Management AUR9807
Pin Description
Pin Number
1
2
3
4
5,6
7
8
9
10
11
12
13
14
15 , 16 , 17
18
19 , 20
I/O
O
O
O
I
I/O
I
I
I
I/O
I
I/O
I
I/O
O
O
I
Pin Name
VREF
STAT1
STAT2
IN
BAT
ISET2
MODE
CE
ISET1
SYSOFF
TS
APM
TMR
OUT
/PG
GND
Function
Internal reference; VREF output capacitor not required, but
one with a value of 0.1μF is recommended.
Charge status flag 1 (open-drain)
Charge status flag 2 (open-drain)
Chip input voltage
Battery connection; charging or discharging all through this
pin
USB mode total current selection (High=450mA, Low=
90mA) and AC mode charge current selection (High=Full
current, Low=half current)
Set AUR9807 in AC(High) or USB(Low) mode
Chip enable (active high)
Set the maximum charging current
Cut off the power path between the battery and the output pin
Battery Temperature sensing
Active Power Management set point
※
no need for
capacitors
Timer program by external resistor connected to this pin.
Tying TMR and VREF together to disable the safety timer
System output
Power-good status flag (open-drain)
Chip Ground
AUR9807
Document number: DS37580 Rev. 1 - 3
3 of 23
www.diodes.com
October 2014
© Diodes Incorporated
NOT RECOMMENDED FOR NEW DESIGN
Data Sheet
Single-cell Li-Ion Charger IC with System Power Management AUR9807
Ordering Information
AUR9807
Circuit Type
Output Voltage
VF: 4.4V, CV Mode
DF: 4.4V, Done
VI: 5V, CV Mode
DI: 5V, Done
VS: 6V, CV Mode
DS: 6V, Done
D: QFN-4.5x3.5-20
G: Green
CV mode: After charge done, charger will stay in constant
voltage mode until time out.
Done: After charge done, charger will shut down until the
battery voltage drops below the battery recharge threshold.
Package
Temperature
Range
Output Voltage
4.4V, CV Mode
4.4V, Done
5V, CV Mode
5V, Done
6V, CV Mode
6V, Done
Part Number
AUR9807VFGD
AUR9807DFGD
AUR9807VIGD
AUR9807DIGD
AUR9807VSGD
AUR9807DSGD
Marking ID
A9807VFG
A9807DFG
A9807VIG
A9807DIG
A9807VSG
A9807DSG
Packing
Type
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
QFN-4.5x3.5-20
-40 to 85C
BCD Semiconductor's Pb-free products, as designated with "G" in the part number, are RoHS compliant and
green.
AUR9807
Document number: DS37580 Rev. 1 - 3
5 of 23
www.diodes.com
October 2014
© Diodes Incorporated
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