AAT2786 Datasheet, PDF (8/27 Pages) Advanced Analogic Technologies – 1.5A Step-Down Converter and 150mA LDO

SystemPower^TM
PRODUCT DATASHEET
AAT2786
1.5A Step-Down Converter and 150mA LDO
Typical Characteristics–Step-Down Converter
100
90
80
70
60
50
40
30
0.1
Efficiency vs. Output Current
(Light-Load Mode; V_OUT = 1.2V)
V_IN = 2.7V
V_IN = 4.2V
V_IN = 3.6V
1
10
100
1000
Output Current (mA)
10000
0.50
0.25
0.00
-0.25
-0.50
0.1
Load Regulation
(Light-Load Mode; V_OUT = 1.2V)
V_IN = 2.7V
V_IN = 3.6V
V_IN = 4.2V
1
10
100
1000
Output Current (mA)
10000
Efficiency vs. Output Current
(PWM Mode; V_OUT = 1.2V)
100
90
80
70
60
50
40
30
20
10
0
1
V_IN = 2.7V
V_IN = 4.2V
V_IN = 3.6V
10
100
1000
10000
Output Current (mA)
Output Voltage vs. Temperature
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 1A)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-40
-20
0
20
40
60
80
Temperature (°C)
0.50
0.25
0.00
-0.25
-0.50
0.1
Load Regulation
(PWM Mode; V_OUT = 1.2V)
V_IN = 2.7V V_IN = 3.6V
V_IN = 4.2V
1
10
100
1000
Output Current (mA)
10000
Supply Current vs. Supply Voltage
(V_OUT = 1.8V; No Load; Light-Load Mode)
70
65
60
85°C
25°C
55
50
45
40
35
-40°C
30
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
8
www.analogictech.com
2786.2008.04.1.0