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M
3.3V /5V or Adjustable-Output,
S ingle-Cell DC-DC Converters
_______________________________________________________________________________________
3
100
0
10
0.01
0.1
1
10
100
1000
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 3.3V)
L = SUMIDA CD73-331 (330
μ
H, 1.5
)
30
20
M
LOAD CURRENT (mA)
E
40
50
60
70
80
90
TOP TO BOTTOM:
V
IN
= 2.0V
V
IN
= 1.5V
V
IN
= 1.25V
V
IN
= 1.0V
V
IN
= 0.75V
V
IN
= 0.5V
100
90
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 5.0V)
L = COILCRAFT D01608-334 (330
μ
H, 2.9
)
20
M
LOAD CURRENT (mA)
E
40
60
50
80
70
30
10
TOP TO BOTTOM:
V
IN
= 2.0V
V
IN
= 1.5V
V
IN
= 1.25V
V
IN
= 1.0V
V
IN
= 0.75V
100
90
0
0.01
1
0.1
10
100
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 3.3V)
L = COILCRAFT D01608-334 (330
μ
H, 2.9
)
20
M
LOAD CURRENT (mA)
E
40
60
50
80
70
30
10
TOP TO BOTTOM:
V
IN
= 2.0V
V
IN
= 1.5V
V
IN
= 1.25V
V
IN
= 1.0V
V
IN
= 0.75V
100
0
10
0.01
0.1
1
10
100
1000
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 5.0V)
L = SUMIDA CD73-331 (330
μ
H, 1.5
)
30
20
M
LOAD CURRENT (mA)
E
40
50
60
70
80
90
TOP TO BOTTOM:
V
IN
= 2.0V
V
IN
= 1.5V
V
IN
= 1.25V
V
IN
= 1.0V
V
IN
= 0.75V
V
IN
= 0.5V
1200
0
0
0.2
0.4
BATTERY VOLTAGE (V)
0.6
0.8 1.0
1.2
1.4 1.6
NO-LOAD BATTERY CURRENT
vs. BATTERY VOLTAGE (V
OUT
= 3.3V)
400
200
1000
M
B
μ
A
800
600
DECREASING
BATTERY
VOLTAGE
INCREASING
BATTERY
VOLTAGE
4000
0
0
0.2
0.4
BATTERY VOLTAGE (V)
0.6
0.8 1.0
1.2
1.4 1.6
NO-LOAD BATTERY CURRENT
vs. BATTERY VOLTAGE (V
OUT
= 5V)
1000
500
3500
M
B
μ
A
2000
2500
3000
1500
DECREASING
BATTERY
VOLTAGE
INCREASING
BATTERY
VOLTAGE
__________________________________________Typic al Operating Charac teristic s
(Circuits of Figure 2, T
A
= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 2, V
IN
= 1.2V, I
LOAD
= 0mA, T
A
= +25°C, unless otherwise noted.)
PARAMETER
LBI Input Hysteresis
LBO Output Voltage Low
I
SINK
= 2mA, open-drain output
Note 2:
Output current specified with circuit of Figure 2 and CoilCraft D01608-334 inductor for test purposes only. More (or less)
output current can be supplied with other coil types depending on inductance value and coil resistance. See Typical Operating
Characteristics for other coil types. Output voltage and output current are guaranteed over this V
IN
operating range once the
device has started up. Actual V
IN
start-up voltage depends on load current.
Note 3:
Output voltage specifications over temperature are guaranteed by design to limits that are 6 sigma from either side of the mean.
Note 4:
Current measured into OUT. V
OUT
is forced to 3.47V to maintain LX off when measuring device current.
CONDITIONS
MIN
TYP
25
MAX
UNITS
mV
V
S———N, 3/––Input Voltage High
S———N, 3/––, FB, LBI Input Current
FB Voltage
Output Voltage Range
0.32 x V
OUT
V
LBI = 1.5V, FB = 1.5V, –———N= 0V or 3V, 3/––= 0V or 3V
MAX867, output in regulation
MAX867
±40
1.25
±100
1.28
6.0
nA
V
V
1.22
2.7
–———N, 3/––Input Voltage Low
0.08 x V
OUT
V
LBO Output Leakage Current
LBO = 5V
1
μA
0.4