Parts List - Linear Technology DC242 Demo Manual

DEMO MANUAL DC242
DC/DC CONVERTER
W U
SCHE ATIC A D PACKAGE DIAGRA S
TP2
V
IN
+
7.4V TO 48V
TP1
GND
TP6
SYNC
TP5
SHDN
C3
100pF
JP2
OPEN TO
EXT SYNC

PARTS LIST

REFERENCE
DESIGNATOR QUANTITY
C1 1
C2 1
C3, C6 2
C4 1
C5 1
C7 1
D1 1
JP1, JP2 2
JP1, JP2 2
L1 1
L2 1
2
C4 C5
100µF 0.1µF
63V 100V
10
V V
IN
12
SYNC
3
SHDN
14
U1
V
C
LT1777
2
R4
NC
68k
11
NC
C6 C7
15
NC
100pF 680pF
7
SGND
Figure 1. 100kHz Low Noise Step-Down Switching Regulator
GND
NC
SHDN
V
CC
V
D
V
SW
SGND
GND
PART NUMBER DESCRIPTION
0805ZC105MAT1A 1µF 10V 20% X7R Capacitor
TPSD107M010R0065 100µF 10V 20% Tantalum Capacitor
06035A101JAT1A 100pF 50V 5% NPO Capacitor
63CV100BS 100µF 63V 20% Electrolytic Capacitor
12061C104MAT1A 0.1µF 100V 20% X7R Capacitor
06033A681JAT1A 680pF 25V 5% NPO Capacitor
10BQ100TR 100V 1A Schottky Diode
2802S-02G2 2mm 2-Pin Jumper
CCIJ2mm-138-G 2mm 2-Pin Shunt
CTX200-4 200µH 0.6A SMT Inductor
SML32-470K 470nH 450mA SMT Inductor
W
L1
200µH
L2
4
CTX200-4
0.47µH
CC
SML32-470k 4
6
V
SW
1
5
V
D
D1
13
FB
10BQ100
1
GND
8
GND
9
GND
16
GND
TOP VIEW
1 16
GND
15
2 NC
3 14 V
C
4 13
FB
5 12 SYNC
6 11
NC
7 10
V
IN
8 9 GND
S PACKAGE
16-LEAD PLASTIC SO
LT1777CS
3
2
+
C2 C1
100µF 1µF
R3
10V 10V
35.7k
1%
R2
26.1k
1%
JP1
V
OSEL
OPEN = 3.3V
CLOSE = 5V
VENDOR
AVX
AVX
AVX
Sanyo
AVX
AVX
IR
Comm Con
Comm Con
Coiltronics
Gowanda
TP3
V
OUT
3.3V OR 5V
500mA
TP4
GND
R1
21.5k
1%
DC242 F01
TELEPHONE
(843) 946-0362
(207) 282-5111
(843) 946-0362
(619) 661-6835
(843) 946-0362
(843) 946-0362
(310) 322-3331
(626) 301-4200
(626) 301-4200
(561) 241-7876
(716) 532-2234