AAT1147 AAT, AAT1147 Datasheet - Page 17

• Manufacturer Part Number: AAT1147
• Description: Step-Down Converter
• Manufacturer: AAT

1. For reduced quiescent current, R2 and R4 = 221kΩ.
1147.2006.05.1.0
Manufacturer
Sumida
Sumida
Sumida
MuRata
MuRata
Coilcraft
Coiltronics
Coiltronics
Coiltronics
Adjustable Version
(0.6V device)
V
OUT
1.85
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
2.0
2.5
3.3
(V)
LQH2MCN4R7M02
LQH32CN4R7M23
CDRH3D16-2R2
CDRH3D16-4R7
CDRH3D16-6R8
Part Number
LPO3310-472
SDRC10-4R7
SD3118-4R7
SD3118-6R8
Table 4: Typical Surface Mount Inductors.
R2 = 59kΩ Ω
Table 3: Evaluation Board Component Values.
R1 (kΩ Ω )
19.6
29.4
39.2
49.9
59.0
68.1
78.7
88.7
118
124
137
187
267
Inductance
(µH)
2.2
4.7
6.8
4.7
4.7
4.7
4.7
6.8
4.7
High Efficiency, Low Noise, Fast Transient
Current (A)
Max DC
1.20
0.90
0.73
0.40
0.45
0.80
0.98
0.82
1.30
R2 = 221kΩ Ω
R1 (kΩ Ω )
400mA Step-Down Converter
1000
75.0
113
150
187
221
261
301
332
442
464
523
715
0.072
0.105
0.170
0.122
0.175
0.122
DCR
0.80
0.20
0.27
(Ω Ω )
1
2.0x1.6x0.95
3.1x3.1x1.85
3.1x3.1x1.85
Size (mm)
3.8x3.8x1.8
3.8x3.8x1.8
3.8x3.8x1.8
2.5x3.2x2.0
3.2x3.2x1.0
5.7x4.4x1.0
LxWxH
L1 (µH)
1mm Shielded
Non-Shielded
Non-Shielded
2.2
2.2
2.2
2.2
2.2
2.2
4.7
4.7
4.7
4.7
6.8
6.8
6.8
Shielded
Shielded
Shielded
Shielded
Shielded
Type
1mm
17