PRODUCT DATASHEET
AAT1
149
SwitchReg
TM
Typical Characteristics
Line Transient
(V
OUT
= 1.8; No Load; No Feedforward Capacitor)
Input Voltage (top) (V)
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
1.92
1.90
1.88
1.86
1.84
1.82
1.80
1.78
3MHz Fast Transient 400mA Step-Down Converter
Line Transient
(V
OUT
= 1.8; C
FF
= 100pF)
Output Voltage (bottom) (V)
1.86
1.85
1.84
1.83
1.82
1.81
1.80
1.79
1.78
4.50
4.25
4.00
3.75
3.50
3.25
3.00
2.75
2.50
1.94
4.50
Output Voltage (bottom) (V)
Input Voltage (top) (V)
Time (50µs/div)
Time (20µs/div)
N-Channel R
DS(ON)
vs. Input Voltage
(SC70JW-8)
750
700
650
120°C
750
700
P-Channel R
DS(ON)
vs. Input Voltage
(SC70JW-8)
R
DS(ON)
(mΩ)
Ω
600
550
500
450
400
350
300
2.5
3.0
3.5
25°C
85°C
R
DS(ON)
(mΩ)
Ω
100°C
650
600
550
500
450
400
350
300
25°C
120°C
100°C
85°C
4.0
4.5
5.0
5.5
6.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Input Voltage (V)
N-Channel R
DS(ON)
vs. Input Voltage
(WLCSP-5)
750
700
650
750
700
650
P-Channel R
DS(ON)
vs. Input Voltage
(WLCSP-5)
R
DS(ON)
(mΩ)
Ω
R
DS(ON)
(mΩ)
Ω
600
550
500
450
400
350
300
250
2.5
25°C
3
120°C
100°C
120°C
100°C
600
550
500
450
400
350
300
250
2.5
25°C
85°C
85°C
3.5
4
4.5
5
5.5
6
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
Input Voltage (V)
1149.2008.08.1.3
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