MAX1642 Datasheet, PDF (4/12 Pages) Maxim Integrated Products – High-Efficiency, Step-Up DC-DC Converters for 1V Inputs

High-Efficiency, Step-Up
DC-DC Converters for 1V Inputs
____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 4, V_BATT = 1.2V, R1 + R2 = 1MΩ, T_A = +25°C, unless otherwise noted.)
EFFICIENCY vs. OUTPUT CURRENT
(V_OUT = 3.3V)
100
90
V_IN = 1.6V
80
70
60
50
40
V_IN = 1.0V ^{VIN = 1.2V}
30
V_IN = 0.85V
20
10 ^{L1 = 150µH}
TDK NLC565050T-151K
0
0.01
0.1
1
10
100
OUTPUT CURRENT (mA)
EFFICIENCY vs. OUTPUT CURRENT
(V_OUT = 5.0V)
100
90
V_IN = 1.0V
80
V_IN = 1.6V
70
60
V_IN = 0.85V
50
V_IN = 1.2V
40
30
20
10
L1 = 100µH
SUMIDA CD54-101
0
0.01
0.1
1
10
100
OUTPUT CURRENT (mA)
EFFICIENCY vs. OUTPUT CURRENT
(V_OUT = 5.0V)
100
90
V_IN = 1.6V
V_IN = 1.0V
80
70
60
V_IN = 0.85V
50
V_IN = 1.2V
40
30
20
10
L1 = 150µH
TDK NLC565050T-151K
0
0.01
0.1
1
10
100
OUTPUT CURRENT (mA)
10,000
NO-LOAD BATTERY CURRENT
vs. INPUT VOLTAGE
1000
V_OUT = 5.0V
100
V_OUT = 2.5V OR 3.3V
10
0.8
1.0
1.2 1.4
1.6
1.8
INPUT VOLTAGE (V)
MINIMUM START-UP INPUT VOLTAGE
vs. OUTPUT CURRENT
1.6
1.5 ^{L1 = 100µH}
SUMIDA CD54-101
1.4
V_OUT = 5V
1.3
1.2
1.1
1.0
0.9
V_OUT = 2.4V, 3.3V
0.8
0.7
0.6
0
5
10
15
20
25
OUTPUT CURRENT (mA)
NO-LOAD BATTERY CURRENT
vs. TEMPERATURE
140
V_BATT = 1.2V
120 VOUT = 3.3V
100
80
60
40
20
0
-40 -20
0 20 40 60 80 100
TEMPERATURE (°C)
BATT AND OUT PIN QUIESCENT CURRENTS
vs. TEMPERATURE
30
V_BATT = 1.2V
V_OUT = 3.6V
25
20
15
I_OUT
10
5
0
-40 -20
I_BATT
0 20 40 60
TEMPERATURE (°C)
80 100
MINIMUM START-UP INPUT VOLTAGE
vs. OUTPUT CURRENT
1.6
1.5 ^{L1 = 150µH}
TDK NLC565050T-151K
1.4
1.3
V_OUT = 5V
1.2
1.1
1.0
0.9
V_OUT = 2.4V, 3.3V
0.8
0.7
0.6
0 2 4 6 8 10 12 14 16
OUTPUT CURRENT (mA)
4 _______________________________________________________________________________________