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