PRODUCT DATASHEET
AAT2786
SystemPower
TM
1.5A Step-Down Converter and 150mA LDO
Typical Characteristics–Step-Down Converter
Efficiency vs. Output Current
(Light-Load Mode; V
OUT
= 3.3V)
100
0.50
Load Regulation
(Light-Load Mode; V
OUT
= 3.3V)
V
IN
= 3.6V
90
Efficiency (%)
80
70
60
50
40
0.1
V
IN
= 4.2V
V
IN
= 5.0V
V
OUT
Error (%)
0.25
V
IN
= 3.6V
V
IN
= 4.2V
0.00
-0.25
V
IN
= 5.0V
1
10
100
1000
10000
-0.50
0.1
1
10
100
1000
10000
Output Current (mA)
Output Current (mA)
Efficiency vs. Output Current
(PWM Mode; V
OUT
= 3.3V)
100
0.50
Load Regulation
(PWM Mode; V
OUT
= 3.3V)
V
IN
= 3.6V
80
Efficiency (%)
60
40
20
0
1.0
V
IN
= 5.0V
V
IN
= 4.2V
V
OUT
Error (%)
0.25
V
IN
= 3.6V
V
IN
= 5.0V
0.00
V
IN
= 4.2V
-0.25
10
100
1000
10000
-0.50
0.1
1
10
100
1000
10000
Output Current (mA)
Output Current (mA)
Efficiency vs. Output Current
(Light-Load Mode; V
OUT
= 2.5V)
100
0.50
Load Regulation
(Light-Load Mode; V
OUT
= 2.5V)
V
IN
= 2.7V
90
Efficiency (%)
80
V
IN
= 3.6V
70
60
50
0.1
1
10
V
IN
= 4.2V
V
OUT
Error (%)
0.25
V
IN
= 2.7V
V
IN
= 3.6V
0.00
-0.25
V
IN
= 4.2V
100
1000
10000
-0.50
0.1
1
10
100
1000
10000
Output Current (mA)
Output Current (mA)
6
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2786.2008.04.1.0
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