MAX1795 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX1795 Datasheet PDF : 13 Pages
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MAX1795/MAX1796/
MAX1797
Low-Supply Current, Step-Up DC-DC Converters
with True Shutdown
Typical Operating Characteristics
(L = 22μH, CIN = 47μF, COUT = 47μF, TA = +25°C, unless otherwise noted.)
MAX1795
EFFICIENCY vs. LOAD CURRENT (+5V)
100 VBATT = +3.6V
90
80
70
VBATT = +2.4V VBATT = +1.2V
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
MAX1796
EFFICIENCY vs. LOAD CURRENT (+3.3V)
100 VBATT = +2.4V
90
80
70
VBATT = +1.2V
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
NO-LOAD BATTERY CURRENT
vs. INPUT BATT VOLTAGE
300
250
200
150
100
VOUT = +5V
50
VOUT = +3.3V
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
BATT VOLTAGE (V)
MAX1795
EFFICIENCY vs. LOAD CURRENT (+3.3V)
100
VBATT = +2.4V
90
80
70
VBATT = +1.2V
60
50
40
30
20
10
0
0.1
L = 10µH
1
10
100
1000
LOAD CURRENT (mA)
MAX1797
EFFICIENCY vs. LOAD CURRENT (+5V)
100
90 VBATT = +3.6V
80
70
60
VBATT = +2.4V
50
VBATT = +1.2V
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
STARTUP VOLTAGE
vs. LOAD CURRENT
4.0
3.5
3.0
2.5
VOUT = +3.3V
2.0
1.5
1.0
0.5
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
MAX1796
EFFICIENCY vs. LOAD CURRENT (+5V)
100 VBATT = +3.6V
90
80
70
VBATT = +2.4V
VBATT = +1.2V
60
50
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
MAX1797
EFFICIENCY vs. LOAD CURRENT (+3.3V)
100
VBATT = +2.4V
90
80
70
60
50
VBATT = +1.2V
40
30
20
10
0
0.1
1
10
100
1000
LOAD CURRENT (mA)
SHUTDOWN THRESHOLD
vs. INPUT BATT VOLTAGE
3.0
2.5
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
BATT VOLTAGE (V)
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