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AAT2146 Datasheet, PDF (7/19 Pages) Advanced Analogic Technologies – Low Noise, Fast Transient 600mA Step-Down Converter
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PRODUCT DATASHEET
AAT2146
Low Noise, Fast Transient 600mA Step-Down Converter
Typical Characteristics
N-Channel RDS(ON) vs. Input Voltage
550
120°C
500
100°C
450
85°C
25°C
400
350
300
250
200
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Load Transient
(VIN = 3.6V; VOUT = 1.8V; COUT = 10µF; CFF = 100pF)
1.9
1.8
1.7
1.6
300mA
1mA
1.5
1.4
1.3
300mA
1.2
1mA
1.1
Time (50µs/div)
Load Transient
(VIN = 3.6V; VOUT = 1.8V; COUT = 4.7µF; CFF = 0pF)
1.85
1.8
1.75
1.7
400mA
300mA
1.65
1.6
400mA
1.55
300mA
1.5
Time (50µs/div)
Load Transient
(VIN = 3.6V; VOUT = 1.8V; COUT = 10µF; CFF = 0pF)
1.85
1.8
1.75
1.7
400mA
300mA
1.65
1.6
1.55
400mA
300mA
1.5
Time (50µs/div)
Load Transient
(VIN = 3.6V; VOUT = 1.8V; COUT = 10µF; CFF = 100pF)
1.85
1.8
1.75
1.7
400mA
300mA
1.65
1.6
300mA
400mA
1.55
1.5
Time (50µs/div)
Line Transient
(VOUT = 1.8V; VIN = 3.6V to 4.2V; IOUT = 400mA; CFF = 0pF)
4.8
1.92
4.2
1.9
3.6
1.88
3
1.86
2.4
1.84
1.8
1.82
1.2
1.8
0.6
1.78
0
1.76
Time (50µs/div)
2146.2008.04.1.1
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