AAT1110_06 Datasheet, PDF (18/19 Pages) Advanced Analogic Technologies – Fast Transient 800mA Step-Down Converter

AAT1110
Fast Transient 800mA Step-Down Converter
Adjustable Version
(0.6V device)
V_OUT (V)
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.8
1.85
2.0
2.5
3.3
Fixed Version
V_OUT (V)
0.6-3.3V
R2 = 59kΩ
R2 = 221kΩ¹
R1 (kΩ)
19.6
29.4
39.2
49.9
59.0
68.1
78.7
88.7
118
124
137
187
267
R2, R4 Not Used
R1 (kΩ)
0
R1 (kΩ)
75.0
113
150
187
221
261
301
332
442
464
523
715
1000
Table 3: Evaluation Board Component Values.
L1 (µH)
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
L1 (µH)
4.7
Manufacturer
Sumida
Sumida
Sumida
Coilcraft
Coiltronics
Coiltronics
Coiltronics
Part Number
CDRH3D16-2R2
CDRH3D16-4R7
CDRH3D16-6R8
LPO3310-472
SD3118-4R7
SD3118-6R8
SDRC10-4R7
Inductance
(µH)
2.2
4.7
6.8
4.7
4.7
6.8
4.7
Max DC
Current (A)
1.20
0.90
0.73
0.80
0.98
0.82
1.30
DCR
(Ω)
0.072
0.105
0.170
0.27
0.122
0.175
0.122
Size (mm)
LxWxH
3.8x3.8x1.8
3.8x3.8x1.8
3.8x3.8x1.8
3.2x3.2x1.0
3.1x3.1x1.85
3.1x3.1x1.85
5.7x4.4x1.0
Table 4: Typical Surface Mount Inductors.
Type
Shielded
Shielded
Shielded
1mm
Shielded
Shielded
1mm Shielded
Manufacturer
MuRata
MuRata
MuRata
Part Number
GRM219R61A475KE19
GRM21BR60J106KE19
GRM21BR60J226ME39
Value
4.7µF
10µF
22µF
Voltage
10V
6.3V
6.3V
Table 5: Surface Mount Capacitors.
Temp. Co.
X5R
X5R
X5R
Case
0805
0805
0805
1. For reduced quiescent current, R2 and R4 = 221kΩ.
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1110.2006.04.1.0