PRODUCT DATASHEET
AAT1149A
TM
SwitchReg
2.2MHz FastTransient 400mA Step-Down Converter
Rated
Current (mA)
Size (mm)
LxWxH
Manufacturer
Part Number/Type
Inductance (μH)
DCR (Ω)
0805
(HMAX = 1mm)
BRL2012
2.2
550
890
440
425
510
250
Taiyo Yuden
CBC2518
Wire Wound Chip
2.2
2.5
2.2
2.2
130
150
480
116
2.5x1.8x1.8
3.2x3.2x1.0
CDRH2D09
Shielded
Sumida
Murata
LQH2MCN4R7M02
Unshielded
2.0x1.6x0.95
3.15x3.15x1.2
SD3118
Shielded
Coiltronics
Table 1: Typical Surface Mount Inductors.
Manufacturer
Part Number
Value
Voltage
Temp. Co.
Case
Murata
Murata
Murata
GRM219R61A475KE19
GRM21BR60J106KE19
GRM185R60J475M
4.7μF
10μF
4.7μF
10V
6.3V
6.3V
X5R
X5R
X58
0805
0805
0603
Table 2: Surface Mount Capacitors.
1. For reduced quiescent current, R2 = 221kΩ.
w w w . a n a l o g i c t e c h . c o m
1149A.2008.08.1.1
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