MAX866/MAX867
3.3V/5V or Adjustable-Output,
Single-Cell DC-DC Converters
_______________________________________________________________________________________
3
100
0
10
0.01 0.1
1
10 100 1000
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 3.3V)
30
20
MAX866/667-01
LOAD CURRENT (mA)
EFFICIENCY (%)
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
L = SUMIDA CD73-331 (330µH, 1.5Ω)
100
90
0
0.01 10.1 10 100
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 5.0V)
20
MAX866/67-04
LOAD CURRENT (mA)
EFFICIENCY (%)
40
60
80
70
50
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
L = COILCRAFT D01608-334 (330µH, 2.9Ω)
100
90
0
0.01 10.1 10 100
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 3.3V)
20
MAX866/67-02
LOAD CURRENT (mA)
EFFICIENCY (%)
40
60
80
70
50
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
L = COILCRAFT D01608-334 (330µH, 2.9Ω)
100
0
10
0.01 0.1
1
10 100 1000
EFFICIENCY vs. LOAD CURRENT (V
OUT
= 5.0V)
30
20
MAX866/667-03
LOAD CURRENT (mA)
EFFICIENCY (%)
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
L = SUMIDA CD73-331 (330µH, 1.5Ω)
1200
0
0 0.2 0.4 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
MAX866/67-05
BATTERY VOLTAGE (V)
BATTERY CURRENT (µA)
800
600
DECREASING
BATTERY
VOLTAGE
INCREASING
BATTERY
VOLTAGE
4000
0
0 0.2 0.4 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
MAX866/67-06
BATTERY VOLTAGE (V)
BATTERY CURRENT (µA)
2000
2500
3000
1500
DECREASING
BATTERY
VOLTAGE
INCREASING
BATTERY
VOLTAGE
__________________________________________Typical Operating Characteristics
(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.)
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.
PARAMETER
CONDITIONS MIN TYP MAX UNITS
S
—
H
—
D
—
N
–
, 3/
–
5
–
Input Voltage High 0.32 x V
OUT
V
S
—
H
—
D
—
N
–
, 3/
–
5
–
, FB, LBI Input Current LBI = 1.5V, FB = 1.5V,
–
S
—
H
—
D
—
N
–
= 0V or 3V, 3/
–
5
–
= 0V or 3V ±40 ±100 nA
FB Voltage MAX867, output in regulation 1.22 1.25 1.28 V
Output Voltage Range MAX867 2.7 6.0 V
–
S
—
H
—
D
—
N
–
, 3/
–
5
–
Input Voltage Low
0.08 x V
OUT
V
LBO Output Leakage Current LBO = 5V 1 µA
LBI Input Hysteresis 25 mV
LBO Output Voltage Low I
SINK
= 2mA, open-drain output 0.4 V
(32 paginas)
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