PRODUCT DATASHEET
AAT1217
SwitchReg
TM
600mA, 1.2MHz, Micropower Synchronous Step-Up Converter
Typical Characteristics
Efficiency vs. Output Current
(V
OUT
= 3.3V; T
A
= 25°C)
°
100
90
80
100
Efficiency vs. Output Current
(V
OUT
= 5V; T
A
= 25°C)
°
V
IN
= 2.4V
V
IN
= 1.2V
V
IN
= 1.5V
V
IN
= 2.4V
Efficiency (%)
V
IN
= 1.5V
V
IN
= 1.2V
90
80
70
60
50
40
30
20
10
0
0.1
Efficiency (%)
V
IN
= 3.6V
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
1
10
100
1000
Output Current (mA)
Output Current (mA)
Output Voltage vs. Output Current
(V
OUT
= 3.3V; T
A
= 25°C)
°
3.5
5.2
Output Voltage vs. Output Current
(V
OUT
= 5V; T
A
= 25°C)
°
Output Voltage (V)
3.4
Output Voltage (V)
5.1
V
IN
= 1.2V
3.3
V
IN
= 1.5V
V
IN
= 2.4V
V
IN
= 1.2V
V
IN
= 1.5V
V
IN
= 2.4V
V
IN
= 3.6V
5
3.2
4.9
3.1
0
100
200
300
400
500
600
4.8
0
100
200
300
400
500
600
Output Current (mA)
Output Current (mA)
Minimum Start-Up Voltage vs. Output Current
(V
OUT
= 3.3V; T
A
= 25°C)
°
1.5
Maximum Output Current vs. Input Voltage
(L = 4.7µH; T
A
= 25°C)
°
1000
Start-Up Voltage (V)
Maximum Output
Current (mA)
1.35
1.2
1.05
0.9
0.75
0.6
0
20
40
60
80
100
120
140
160
180
200
800
600
400
200
0
0.5
V
OUT
= 3.3V
V
OUT
= 5V
1
1.5
2
2.5
3
3.5
4
4.5
Output Current (mA)
Input Voltage (V)
1217.2008.03.1.3
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