AAT2506 Datasheet, PDF (10/26 Pages) Advanced Analogic Technologies – 1MHz Step-Down Converter/LDO Regulator

AAT2506
1MHz Step-Down Converter/LDO Regulator
Typical Characteristics
Unless otherwise noted, V_IN = 5V, T_A = 25°C.
Step-Down Converter
P-Channel R_DS(ON) vs. Input Voltage
(EN = V_IN; ENLDO = GND)
750
700
650
120°C 100°C
600
550
500
85°C
450
25°C
400
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Step-Down Converter
N-Channel R_DS(ON) vs. Input Voltage
(EN = V_IN; ENLDO = GND)
750
700
650
120°C _100°C
600
550
500
450
85°C
400
25°C
350
300
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Input Voltage (V)
Step-Down Converter Load Transient Response
(30mA - 300mA; V_IN = 3.6V; V_OUT = 1.5V;
C1 = 22µF; ENLDO = GND)
1.65
1.60
1.5
1.55
1.3
1.50
1.45
300mA
1.1
1.40
1.35
30mA
0.9
1.30
0.7
1.25
0.5
1.20
1.15
0.3
1.10
1.05
0.1
1.00
-0.1
Time (25µs/div)
Step-Down Converter Load Transient Response
(30mA - 300mA; V_IN = 3.6V; V_OUT = 2.5V;
C1 = 22µF; ENLDO = GND)
2.65
1.5
2.55
1.3
2.45
300mA
1.1
30mA
0.9
2.35
0.7
2.25
0.5
0.3
2.15
0.1
2.05
-0.1
Time (25µs/div)
Step-Down Converter Line Transient
(V_OUT = 1.8V @ 400mA; EN = V_IN; ENLDO = GND)
1.90
7.0
1.85
6.5
1.80
6.0
1.75
5.5
1.70
5.0
1.65
4.5
1.60
4.0
1.55
3.5
1.50
3.0
Time (25µs/div)
10
Step-Down Converter Line Regulation
(V_OUT = 1.5V; ENLDO = GND)
2
1.5
1
I_OUT = 600mA
0.5
I_OUT = 100mA
0
-0.5
I_OUT = 10mA
-1
2.5
3
3.5
4
4.5
5
5.5
6
Input Voltage (V)
2506.2005.12.1.0