MIC79110 Datasheet, PDF (5/12 Pages) Micrel Semiconductor – Simple 1.2A Linear Li-Ion Battery Charger

MIC79110
-90
PSRR
-80
-70
-60
-50 _250mA
-40
500mA
-30
0mA
50mA
-20
-10
V
IN
=
V_OUT+1V
V_OUT = 4.2V
0
0.1
1
10 100
FREQUENCY (kHz)
1000
Ground Current vs.
80
Temperature
75
70
65
60
55
50
45
I_SET = 1.2A
4-040 _{-20 0 20 40 60 80 100}
TEMPERATURE (ºC)
Ground Current
3.5 ^{vs. Supply Voltage}
3.0 ^IBAT=0A
2.5
2.0
1.5
1.0
0.5
0
012345
SUPPLY VOLTAGE (V)
Dropout Voltage
35
vs. Temperature
I_BAT=0A
30
25
20
15
10
5
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
July 2004
Dropout
4.5
Characteristics
4.0
3.5
I_BAT = 0A
3.0
2.5
2.0
I_BAT = 1.2A
1.5
1.0
0.5
00
1
2
3
4
5
SUPPLY VOLTAGE (V)
Ground Current
5.5
vs. Temperature
5.3
5.1
4.9
4.7
4.5
4.3
4.1
3.9
3.7 I = 0A
BAT
3.5
-40 -20 0 20 40 60 80 100
TEMPERATURE (°C)
Ground Current
60 ^{vs. Supply Voltage}
I_BAT=1.2A
50
40
30
20
10
0
012345
SUPPLY VOLTAGE (V)
Shutdown Threshold
1.15
vs. Temperature
1.10
1.05
1.00
0.95
0.90
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
5
Micrel
Battery Current vs.
60
Ground Current
50
40
30
20
10
00 _{200 400 600 800 1000 1200}
BATTERY CURRENT (mA)
Battery Voltage
0.8
vs. Temperature
0.7
V_OUT = 4.2V
I_BAT=0A
0.6
0.5
0.4
0.3
0.2
0.1
0
-40 -20 0 20 40 60 80 100 120
TEMPERATURE (°C)
800
Dropout Voltage
700 ^VOUT=4.2V
600
500
400
300
200
100
0
0 0.2 0.4 0.6 0.8 1 1.2
BATTERY CURRENT (A)
Battery Current
vs. Battery Voltage
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
R
SET
=
165kΩ
0.5
00 _{0.2 0.4 0.6 0.8 1 1.2 1.4}
BATTERY CURRENT (A)
M9999-072004