
MAX8815A
1A, 97% Efficiency, 30µA Quiescent Current
Step-Up Converter with True Shutdown
_______________________________________________________________________________________
5
0
40
20
80
60
100
120
1.2 3.22.2 4.2 5.2 6.2
EP TEMPERATURE
vs. INPUT VOLTAGE
MAX8815A toc07
INPUT VOLTAGE (V)
EP TEMPERATURE (°C)
MEASURED AT THE BOTTOM SIDE VIA
UNDERNEATH THE EP ON THE MAX8815A
EVALUATION KIT
I
OUT
= 0.5A
I
OUT
= 1A
V
OUT
= 5V
T
A
= +25°C
0
100
50
200
150
250
300
1.2 3.22.2 4.2 5.2 6.2
INPUT CURRENT
vs. INPUT VOLTAGE, V
OUT
= 3.3V
MAX8815A toc08
INPUT VOLTAGE (V)
INPUT CURRENT (μA)
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
60
40
20
80
100
120
140
160
180
200
1.2 3.22.2 4.2 5.2 6.2
INPUT CURRENT
vs. INPUT VOLTAGE, V
OUT
= 5V
MAX8815A toc09
INPUT VOLTAGE (V)
INPUT CURRENT (μA)
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
600
400
200
800
1000
1200
1400
1600
1800
2000
1.2 3.22.2 4.2 5.2 6.2
INPUT CURRENT
vs. INPUT VOLTAGE, DURING SHUTDOWN
MAX8815A toc10
INPUT VOLTAGE (V)
INPUT CURRENT (nA)
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
0
400
200
800
600
1000
1200
1.2 2.41.8 3.0 3.6
STARTUP LOAD
vs. INPUT VOLTAGE
MAX8815A toc11
INPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
T
A
= +25°C
T
A
= +85°C
0
1500
1000
500
2000
2500
3000
3500
4000
4500
5000
0 500
1000
1500
SOFT-START TIME
vs. LOAD CURRENT
MAX8815A toc12
LOAD CURRENT (mA)
SOFT-START TIME (μs)
Typical Operating Characteristics (continued)
(V
OUTS
= V
POUT
= 5V, V
BATT
= V
ON
= 3.6V, V
SKIPB
= GND.)
0
200
400
600
800
1000
1200
1400
1600
1.2 2.2 3.2 4.2 5.2 6.2
SOFT-START TIME
vs. INPUT VOLTAGE
MAX8815A toc13
INPUT VOLTAGE (V)
SOFT-START TIME (μs)
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