AAT2153 Datasheet, PDF (8/17 Pages) Advanced Analogic Technologies – 2.5A Low Noise Step-Down Converter

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Typical Characteristics
Load Transient Response
(IOUT = 10mA to 2.5A; VOUT = 1.8V; R1 = 0Ω; COUT = 2x22μF)
2.0
1.9
1.8
1.7
1.6
3
2
1
0
Time (100μs/div)
Line Transient Response
(V_OUT = 1.8V; I_OUT = 1.5A; C_FF = 100pF)
5.0
0.12
4.5
0.10
4.0
0.08
3.5
0.06
3.0
0.04
2.5
0.02
2.0
0.00
1.5
-0.02
1.0
-0.04
Time (100µs/div)
Enable Soft Start
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 2.5A; C_FF = 100pF)
EN
(2V/div)
V_OUT
(1V/div)
I_IN
(1A/div)
Time (100μs/div)
PRODUCT DATASHEET
AAT2153
2.5A Low Noise Step-Down Converter
Load Transient Response
(IOUT = 10mA to 2.5A; VOUT = 1.8V; R1 = 10Ω; COUT = 22μF)
2.0
1.9
1.8
1.7
1.6
3
2
1
0
Time (100μs/div)
Line Regulation
(V_OUT = 1.8V; I_OUT = 1A)
0.40
0.30
0.20
0.10
0.00
-0.10
-0.20
-0.30
-0.40
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Enable Soft Start
(V_IN = 3.6V; V_OUT = 1.8V; I_OUT = 2.5A; C_FF = 1nF)
EN
(2V/div)
V_OUT
(1V/div)
I_IN
(1A/div)
Time (100μs/div)
8
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2153.2008.09.1.0