PRELIMINARY - December 2, 1999
PROGRAMMABLE SYNCHRONOUS DC/DC
CONVERTER, DUAL LOW DROPOUT
REGULATOR CONTROLLER
SC1186
MATERIALS LIST
Qty. Reference
Part/Description Vendor Notes
4 C1,C5,C13,C18 0.1µF Ceramic Various
6 C2,C3,C14-C17 1500µF/6.3V
SANYO MV-GX or equiv. Low ESR
1 C9
1000µF
2 C11,C21
330µF/6.3V
Various
1 L1
4µH
8 Turns 16AWG on MICROMETALS T50-52D core
2 Q1,Q2
1 Q3
See notes
IRLML2803
See notes
IR
FET selection requires trade-off between efficiency and
cost. Absolute maximum RDS(ON) = 22 mΩ for Q1,Q2
.25Ω 30V SOT23 (or equivalent)
1 Q4
IRFZ14S
IR
Or equivalent
1 R4
5mΩ
IRC
OAR-1 Series
1 R5
2.32kΩ, 1%, 1/8W Various
1 R6
1kΩ, 1%, 1/8W Various
1 R1
10Ω, 5%, 1/8W Various
1 U1
SC1186CSW
SEMTECH
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