AAT1149 View Datasheet(PDF) - Advanced Analogic Technologies
Part Name
Description
MFG CO.
'AAT1149' PDF : 21 Pages View PDF
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PRODUCT DATASHEET
AAT1149
3MHz Fast Transient 400mA Step-Down Converter
Adjustable Version (0.6V device)
VOUT (V)
1.0
1.2
1.5
1.8
2.5
3.3
R2 = 59kΩ1
R1 (kΩ)
39.2
59.0
88.7
118
187
267
R2 = 221kΩ1
R1 (kΩ)
150
221
332
442
715
1000
Table 3: Evaluation Board Component Values.
L1 (μH)
1.0
1.2
1.5
1.8
2.2
3.3
Manufacturer
Taiyo Yuden
Sumida
Murata
Coiltronics
Part Number/Type
BRC1608
BRL2012
CBC2518
Wire Wound Chip
CDRH2D09
Shielded
LQH2MCN4R7M02
Unshielded
SD3118
Shielded
Inductance (μH)
0.77
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
0.68
0.82
1.2
1.5
2.2
3.3
Rated
Current (mA)
660
520
410
600
550
450
1000
890
590
520
480
440
400
485
445
425
375
980
830
720
630
510
430
Table 4: Typical Surface Mount Inductors.
DCR (Ω)
110
180
300
200
250
350
80
130
97.5
110
131
150
195
300
400
480
600
31
54
75
104
116
139
Size (mm)
LxWxH
0603
(HMAX = 1mm)
0805
(HMAX = 1mm)
2.5x1.8x1.8
3.2x3.2x1.0
2.0x1.6x0.95
3.15x3.15x1.2
Manufacturer
Murata
Murata
Murata
Part Number
GRM219R61A475KE19
GRM21BR60J106KE19
GRM185R60J475M
Value
4.7μF
10μF
4.7μF
Voltage
10V
6.3V
6.3V
Table 5: Surface Mount Capacitors.
Temp. Co.
X5R
X5R
X58
Case
0805
0805
0603
1. For reduced quiescent current, R2 = 221kΩ.
1149.2008.08.1.3
www.analogictech.com
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