PRODUCT DATASHEET
AAT2603
Total Power Solution for Portable Applications
Typical Characteristics—DC-DC1 (Buck1)
Load Transient
(V
OUTB1
= 3.3V; V
IN
= 4.2V; I
OUTB1
= 100mA to 1200mA; C
FF
= 100pF)
0.1
Load Transient
(V
OUTB1
= 3.3V; V
IN
= 4.2V; I
OUTB1
= 600mA to 1200mA; C
FF
= 0pF)
0.2
0.1
Output Voltage
(AC Coupled) (top)
Output Voltage
(AC Coupled) (top)
Output Current
(bottom)
Output Current
(bottom)
0
-0.1
-0.2
1.5
1
0.5
0
0
-0.1
-0.2
1.5
1
0.5
0
Time (100µs/div)
Time (50µs/div)
Load Transient
(V
OUTB1
= 3.3V; V
IN
= 4.2V; I
OUTB1
= 600mA to 1200mA; C
FF
= 100pF)
0.1
Line Transient
(V
OUTB1
= 3.3V; V
IN
= 4.2V to 5V; I
OUTB1
= 700mA)
Output Voltage
(AC Coupled) (bottom)
5
Output Voltage
(AC Coupled) (top)
0
-0.1
-0.2
1.5
1
0.5
0
Input Voltage (top)
Output Current
(bottom)
4
0.1
0
-0.1
-0.2
Time (50µs/div)
Time (100µs/div)
Soft-Start
(V
OUTB1
= 3.3V; V
IN
= 4.2V; I
OUTB1
= 1.2A)
6
4
2
0
4
3
2
1
0
Enable Voltage (top)
Output Voltage
(bottom)
Time (100µs/div)
8
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2603.2008.10.1.2
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