TPS61220_15 Datasheet, PDF (6/27 Pages) Texas Instruments – TPS6122x Low Input Voltage, 0.7V Boost Converter With 5.5μA Quiescent Current

TPS61220, TPS61221, TPS61222
SLVS776B – JANUARY 2009 – REVISED NOVEMBER 2014
300
250
200
TPS61221 V_O = 3.3 V
150
100
TPS61222 V_O = 5 V
50
TPS61220 V_O = 1.8 V
0
0.7 1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7
V_I - Input Voltage - V
Figure 1. Maximum Output Current versus Input Voltage
(TPS61220, TPS61221, TPS61222)
100
90
80
70
V_I = 3 V
60
V_I = 1.2 V ^VI ^{= 2.4 V}
50
V_I = 0.7 V
40
30
20
10
0
0.01
0.1
1
10
100
I_O - Output Current - mA
V_O = 3.3 V
Figure 3. Efficiency versus Output Current and Input
Voltage (TPS61221)
100
90
I_O = 10 mA
80
70
I_O = 100 mA
I_O = 1 mA
60
I_O = 50 mA
50
40
30
20
10
0
0.7
0.9
1.1
1.3
1.5
1.7
V_I - Input Voltage - V
V_O = 1.8 V
Figure 5. Efficiency versus Input Voltage and Output
Current (TPS61220)
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100
90
80
70
60
V_I = 1.2 V ^{VI = 1.5 V}
50
V_I = 0.7 V
40
30
20
10
0
0.01
0.1
1
10
100
I_O - Output Current - mA
V_O = 1.8 V
Figure 2. Efficiency versus Output Current and Input
Voltage (TPS61220)
100
90
80
70
60
V_I = 4.2 V
50
V_I = 2.4 V ^{VI = 3.6 V}
V_I = 1.2 V
40 VI = 0.7 V
30
20
10
0
0.01
0.1
1
10
100
I_O - Output Current - mA
V_O = 5 V
Figure 4. Efficiency versus Output Current and Input
Voltage (TPS61222)
100
I_O = 10 mA
90
80
I_O = 100 mA
70
I_O = 1 mA
60
I_O = 50 mA
50
40
30
20
10
0
0.7
1.2
1.7
2.2
2.7
3.2
V_I - Input Voltage - V
V_O = 3.3 V
Figure 6. Efficiency versus Input Voltage and Output
Current (TPS61221)
6
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