AAT1149 Analogic Corporation, AAT1149 Datasheet - Page 18

• Manufacturer Part Number: AAT1149
• Manufacturer: Analogic Corporation

1. For reduced quiescent current, R2 = 221kΩ.
18
Manufacturer
Taiyo Yuden
Sumida
Murata
Coiltronics
Adjustable Version
(0.6V device)
V
OUT
1.0
1.2
1.5
1.8
2.5
3.3
(V)
LQH2MCN4R7M02
Wire Wound Chip
Part Number/
CDRH2D09
Unshielded
BRC1608
CBC2518
BRL2012
Shielded
Shielded
SD3118
Type
Table 4: Typical Surface Mount Inductors.
R2 = 59kΩ Ω
Table 3: Evaluation Board Component Values.
R1 (kΩ Ω )
39.2
59.0
88.7
118
187
267
Inductance
(μH)
0.77
0.68
0.82
1.0
1.5
1.5
2.2
3.3
1.0
2.2
1.2
1.5
1.8
2.5
3.0
1.0
1.5
2.2
3.3
1.2
1.5
2.2
3.3
Current (mA)
R2 = 221kΩ Ω
R1 (kΩ Ω )
Rated
1000
400mA Step-Down Converter
660
520
410
600
550
450
890
590
520
480
440
400
485
445
425
375
980
830
720
630
510
430
1000
150
221
332
442
715
1
3MHz Fast Transient
DCR
97.5
(Ω Ω )
110
180
300
200
250
350
130
110
131
150
195
300
400
480
600
104
116
139
80
31
54
75
L1 (μH)
(H
(H
3.15x3.15x1.2
2.0x1.6x0.95
1.0
1.2
1.5
1.8
2.2
3.3
Size (mm)
2.5x1.8x1.8
3.2x3.2x1.0
MAX
MAX
LxWxH
1149.2006.11.1.0
0603
0805
= 1mm)
= 1mm)