-5 V/-1 2 V/-1 5 V o r Ad ju s t a b le ,
Hig h -Effic ie n c y, Lo w I DC-DC In ve rt e rs
Q
45/MAX76
Reference Capacitor
Bypass REF with a 0.1µF capacitor (C3). The REF out-
put can source up to 100µA for external loads.
output filter capacitor ground lead to a single point (star
ground configuration). Also minimize lead lengths to
reduce stray capacitance, trace resistance, and radiat-
ed noise. In particular, keep the traces connected to
FB and LX short. C2 must be placed as close as pos-
sible to the V+ and GND pins. If an external resistor
divider is used (Figure 3), the trace from FB to the resis-
tors must be extremely short.
La yo u t Co n s id e ra t io n s
Proper PC board layout is essential to reduce noise
generated by high current levels and fast switching
wa ve forms . Minimize g round nois e b y c onne c ting
GND, the input bypass capacitor ground lead, and the
Table 1. Component Suppliers
PRODUCTION METHOD
INDUCTORS
CAPACITORS
DIODES
Matsuo
267 series
Sumida
CD75/105 series
Nihon
Coiltronics
CTX series
Sprague
595D/293D series
EC10QS02L (Schottky)
Surface Mount
EC11FS1 (high-speed silicon)
Coilcraft
DT/D03316 series
AVX
TPS series
Sumida
RCH895 series
Sanyo
Miniature Through-Hole
Low-Cost Through-Hole
Motorola
1N5817, 1N5818, (Schottky)
MUR105 (high-speed silicon)
OS-CON series (very low ESR)
Renco
RL1284 series
Nichicon
PL series
SUPPLIER
AVX
PHONE
FAX
USA:
USA:
USA:
USA:
(803) 448-9411
(708) 639-6400
(407) 241-7876
(714) 969-2491
(803) 448-1943
(708) 639-1469
(407) 241-9339
Coilcraft
Coiltronics
(714) 960-6492
81-6-337-6456
Matsuo
Japan: 81-6-337-6450
Motorola
Nichicon
USA:
(800) 521-6274
(602) 952-4190
(708) 843-2798
81-7-5256-4158
USA:
(708) 843-7500
Japan: 81-7-5231-8461
USA: (805) 867-2555
(805) 867-2556
81-3-3494-7414
Nihon
Japan: 81-3-3494-7411
Renco
USA:
(516) 586-5566
(516) 586-5562
(619) 661-1055
81-7-2070-1174
USA:
(619) 661-6835
Sanyo OS-CON
Sprague Electric Co.
Sumida
Japan: 81-7-2070-1005
USA:
USA:
(603) 224-1961
(708) 956-0666
(603) 224-1430
(708) 956-0702
81-3-3607-5144
Japan: 81-3-3607-5111
______________________________________________________________________________________ 11
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
