AAT1217
600mA, 1.2MHz, Micropower
Synchronous Step-Up Converter
Typical Characteristics
Efficiency vs. Output Current
Efficiency vs. Output Current
(VOUT = 3.3V; TA = 25°C)
(VOUT = 5V; TA = 25°C)
100
100
90
80
70
60
50
40
30
20
10
0
90
VIN = 2.4V
VIN = 2.4V
80
70
60
50
40
30
20
10
0
VIN = 3.6V
VIN = 1.2V
VIN = 1.5V
VIN = 1.5V
VIN = 1.2V
0.1
1
10
100
1000
0.1
1
10
100
1000
Output Current (mA)
Output Current (mA)
Output Voltage vs. Output Current
Output Voltage vs. Output Current
(VOUT = 3.3V; TA = 25°C)
(VOUT = 5V; TA = 25°C)
3.5
3.4
3.3
3.2
3.1
5.2
5.1
5
VIN = 1.2V
VIN = 2.4V
VIN = 1.5V
VIN = 2.4V
VIN = 1.5V
VIN = 1.2V
VIN = 3.6V
4.9
4.8
0
100
200
300
400
500
600
0
100
200
300
400
500
600
Output Current (mA)
Output Current (mA)
Minimum Start-Up Voltage vs. Output Current
Maximum Output Current vs. Input Voltage
(VOUT = 3.3V; TA = 25°C)
(L = 4.7µH; TA = 25°°C)
1000
1.5
1.35
1.2
800
VOUT = 3.3V
600
1.05
400
VOUT = 5V
0.9
200
0.75
0.6
0
0.5
0
20
40
60
80
100 120 140 160 180 200
1
1.5
2
2.5
3
3.5
4
4.5
Output Current (mA)
Input Voltage (V)
1217.2007.07.1.0
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
