AAT2120_08 Datasheet, PDF (7/19 Pages) Advanced Analogic Technologies – 500mA Low Noise Step-Down Converter

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Typical Characteristics
P-Channel RDS(ON) vs. Input Voltage
1000
120°C
900
100°C
800
85°C
700
600
500
25°C
400
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(1mA to 500mA; V_IN = 3.6V; V_OUT = 1.8V;
C_OUT = 4.7µF; C_FF = 100pF)
2.2
2.0
1.8
V_O
1.6
1.4
I_O
1.2
1.0
0.8
I _LX
0.6
Time (20µs/div)
Line Response
(V_OUT = 1.8V @ 500mA)
1.90
7.0
1.85
VO
6.5
1.80
6.0
1.75
5.5
1.70
5.0
1.65
VIN
4.5
1.60
4.0
1.55
3.5
1.50
3.0
Time (25µs/div)
PRODUCT DATASHEET
AAT2120
500mA Low Noise Step-Down Converter
N-Channel RDS(ON) vs. Input Voltage
750
700
650
85°C
600
120°C
550
100°C
500
450
400
350
25°C
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Load Transient Response
(350mA to 500mA; V_IN = 3.6V; V_OUT = 1.8V;
C_OUT = 4.7µF; C_FF = 100pF)
2.0
1.9
V_O
1.8
1.7
1.6
I_O
1.5
1.4
1.3
1.2
1.1
I_LX
1.0
Time (25µs/div)
2120.2008.02.1.2
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