Typical operating characteristics – Rainbow Electronics MAX8815A User Manual
Page 4
MAX8815A
1A, 97% Efficiency, 30µA Quiescent Current
Step-Up Converter with True Shutdown
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
OUTS
= V
POUT
= 5V, V
BATT
= V
ON
= 3.6V, V
SKIPB
= GND.)
EFFICIENCY vs. LOAD
CURRENT, V
OUT
= 3.3V
MAX8815A toc01
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
10
1
10
20
30
40
50
60
70
80
90
100
0
0.1
1000
V
IN
= 1.8V, SKIP
= 1.5V, SKIP
V
IN
= 3V, SKIP
= 2.5V, SKIP
= 3V, FPWM
V
IN
= 2.5V, SKIP
= 1.8V, SKIP
= 1.5V, FPWM
EFFICIENCY vs. LOAD
CURRENT, V
OUT
= 5V
MAX8815A toc02
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
10
1
10
20
30
40
50
60
70
80
90
100
0
0.1
1000
V
IN
= 4.2V,
SKIP
SKIP
V
IN
= 3.6V,
= 3V,
= 2.4V,
= 1.8V,
= 1.5V
FPWM
V
IN
= 4.2V,
= 3.6V,
= 3V,
= 2.4V,
= 1.8V,
= 1.5V
0
0.4
0.2
0.8
0.6
1.2
1.0
1.4
1.2
2.2
1.7
2.7
3.2
3.7
MAXIMUM LOAD CURRENT
vs. INPUT VOLTAGE
MAX8815A toc03
INPUT VOLTAGE (V)
LOAD CURRENT (A)
V
OUT
= 5V
V
OUT
= 3.3V
4.80
4.90
4.85
5.00
4.95
5.05
5.10
0.1
10
1
100
1000
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8815A toc04
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
FPWM
SKIP
V
IN
= 3.6V,
= 3V,
= 2.5V,
= 1.8V,
= 1.5V
3.22
3.30
3.24
3.26
3.28
3.34
3.32
3.36
3.38
0.1
10
1
100
1000
OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX8815A toc05
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
V
IN
= 3.0V,
= 2.5V,
= 1.8V,
= 1.5V
FPWM
SKIP
0
2
1
4
3
5
6
1.2
3.2
2.2
4.2
5.2
6.2
OUTPUT VOLTAGE
vs. INPUT VOLTAGE
MAX8815A toc06
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)