Diodes AUR9807 - Manual (Page 8)

Data Sheet
Single-cell Li-Ion Charger IC with System Power Management AUR9807
Nov. 2011 Rev. 1. 0 BCD Semiconductor Manufacturing Limited
8
Electrical Characteristics (Continued)
T
A
=25 o C, V
IN
is within the recommended range, unless otherwise specified.
Parameter Symbol Test Condition Min Typ Max Unit
Precharge Set Voltage V
PRECHG
225 250 275 mV
De-glitch Time Between
Fast Charge and
Precharge Transition
t
DGLF
t
FALL
=100ns,
10mV overdrive,
V
BAT
decreasing below
threshold
22.5 ms
CHARGING-CURRENT REGULATION
Fast Charge Current
Range
I
CHG
V
BAT
>V
LOWV
, Mode=High 100 1000 1500 mA
BAT to OUT Pull-up R
PBAT
V
BAT
<1V 1000 Ω
Battery Charge Current
Set Voltage
(1)
V
SET
Voltage on ISET1 2.4 2.5 2.6 V
100mA
CHG
<1.5A 375 425 450
Charge Current Set
Factor
K
SET
10mA
CHG
<100mA 300 450 600
USB MODE INPUT CURRENT LIMIT
ISET2=High 400 500
USB Input Current Range I
USB
ISET2=Low 80 90 100
mA
CHARGING VOLTAGE REGULATION
Battery-charge-voltage 4.2 V
T
A
=25°C -0.5 0.5 %
Battery Charge Voltage
Regulation Accuracy
V
BAT(REG)
-1 1 %
CHARGE TERMINATION DETECTION
Charge Done Detection
Current
I
TERM
V
BAT
>V
RCH
,
I
TERM
=(K
SET
x V
TERM
)/
R
SET
10 150 mA
V
BAT
>V
RCH
, Mode=High 230 250 270 Charge Done Set Voltage,
Measured on ISET1
V
TERM
V
BAT
>V
RCH
, Mode=Low 95 100 130
mV
TEMPERATURE SENSE COMPARATORS
High Voltage, Low
Temperature Threshold
V
LTF
Temp fault at V
TS
>V
LTF
2.5 V
Low Voltage , High
Temperature Threshold
V
HTF
Temp fault at V
TS HTF
0.5 V
Current Source for
Temperature Sense
I
TS
95 100 105 µA
BATTERY RECHARGE THRESHOLD
Recharge Threshold
Voltage
V
RCH
V
BAT(RE
G)
-0.125
V
BAT(RE
G)
-0.1
V
BAT(RE
G)
-0.075
V
(1) For half-charge rate, V
SET
is 1.25V.