DC1730A - Schematic

5
4
3
2
1
REVISION HISTORY
U1
LT3973EMSE
VIN E3
5.6V - 42V
GND
VIN
4
+ C4
9
C3
2.2uF
50V
1206
10uF
50V
E4
3
2
5
SW
PG
BOOST
EN/UVLO
BD
OUT
FB
GND
C
PG
EN/UVLO
APPROVED
DATE
JAINO P.
09-06-11
PRODUCTION
RT
7
C2
0.22uF
8
R1
1.00M
1%
1
10
E1
VOUT
C1
22uF
6.3V
1206
C5
10pF
VOUT
5V / 750mA
E2
GND
R5
215k
1%
(600kHz)
R2
316k
1%
C
R9
200K
E6
E5
JP1
ON
OFF
1
2
3
R7
OPT
R8
OPT
B
B
CUSTOMER NOTICE
NOTES: UNLESS OTHERWISE SPECIFIED
A
2
DESCRIPTION
L1
15uH
6
11
SUNCON
50CE10BSS
REV
_
D
VIN
GND
D
ECO
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
APPROVALS
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5
4
3
TECHNOLOGY
KIM T.
JAINO P.
TITLE: SCHEMATIC
A
42V, 750mA, MICROPOWER BUCK REGULATOR
SIZE
IC NO.
DATE:
REV.
LT3973EMSE
N/A
SCALE = NONE
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
2
DEMO CIRCUIT 1730A
09/06/2011, 10:10 AM
SHEET 1
2
1
OF 1
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