PRODUCT DATASHEET
AAT1153
2A Step-Down Converter
Typical Characteristics
Efficiency vs. Output Current
(VOUT = 1.2V, TA = 25°C, L = 2.2µH, CIN = COUT = 22µF)
DC Regulation
(VOUT = 1.2V, TA = 25°C, L = 2.2µH, CIN = COUT = 22µF)
100
1.236
90
VIN = 4.2V
1.224
1.212
1.200
1.188
1.176
1.164
80
VIN = 3.6V
70
VIN = 5.0V
VIN = 5.5V
VIN = 2.5V
VIN = 4.2V
60
50
VIN = 5.5V
40
VIN = 3.6V
VIN = 5.0V
VIN = 2.5V
30
20
10
0
0.1
1
10
100
1000
10000
0
200 400 600 800 1000 1200 1400 1600 1800 2000
Output Current (mA)
Output Current (mA)
Quiescent Current vs. Input Voltage
(TA = 25°C, L = 2.2µH, CIN = COUT = 22µF)
Quiescent Current vs. Temperature
(L = 2.2µH, CIN = COUT = 22µF)
0.38
0.36
0.34
0.32
0.30
0.28
0.26
0.24
0.22
0.20
400
350
300
250
200
VOUT = 3.3V
VIN = 4.2V
VOUT = 3.3V
VOUT = 1.8V
VIN = 3.6V
VOUT = 1.8V
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-20
0
20
40
60
80
100
Input Voltage (V)
Temperature (°C)
Line Regulation
(VOUT = 1.8V, L = 2.2µH, CIN = COUT = 22µF)
0.40
0.20
0.00
-0.20
-0.40
IOUT = 1A
IOUT = 600mA
IOUT = 1mA
IOUT = 1.5A
IOUT = 2A
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
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1153.2007.11.1.1
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
