芯美 子
Preliminary
EUP8080
Typical Operating Characteristics
EN_CHRG vs Temperature
EN_CHRG Pin Threshold Voltage vs Temperature
10
9
0.80
0.75
RISING
8
0.70
0.65
7
6
0.60
FALLING
5
0.55
0.50
4
3
-40
-40
-20
0
20
40
60
80
-20
0
20
40
60
80
TEMPERATURE (oC)
TEMPERATURE (oC)
Normalized Charger Timer Period vs Temperature
CHRG and ACPR Pin Output Low Voltage vs Temperature
1.05
1.00
0.95
0.90
0.85
0.80
0.32
ICHRG,IACPR=5mA
0.30
0.28
0.26
0.24
0.22
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
ACPR
CHRG
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
-40
-20
0
20
40
60
80
TEMPERATURE (oC)
TEMPERATURE (oC)
Charger FET On-Resistance vs Temperature
Buck Efficiency vs Load Current (Vout=1.8V)
Power Save
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
100
90
80
70
60
50
40
30
20
10
0
VCC = 4V
IBAT = 350mA
BAT=2.7V
BAT=3.8V
BAT=4.2V
BAT=2.7V
BAT=3.8V
BAT=4.2V
PWM
L=2.2uH
C=10uF
-40
-20
0
20
40
60
80
0.1
1
10
100
1000
TEMPERATURE (oC)
LOAD CURRENT (mA)
DS8080 Ver 0.1 Aug. 2007
8
系
：15999644579 83151715
EUTECH [ EUTECH MICROELECTRONICS INC ]
