DC1578A - Schematic

A
B
C
D
E
REVISION HISTORY
ECO
REV
ON
OFF
1
VOUT
DATE
03-29-10
WALKER B.
4
U1
11
E2
10
R4
200k
R5
10
**
PG
RUN/SS
NC
VIN
exposed pad,
solder side
DA
VIN
C6
0.1uF
50V
0603
5
C1
2.2uF
50V
1206
+
CIN
10uF
63V
63CE10GA
8
E1
VIN
6.9V
* - 36V
TRANSIENT TO 60V
E4
GND
2
2
R3
100k
PGOOD
PRODUCTION
APPROVED
1
2
3
JP1
RUN
4
DESCRIPTION
D1
MBRM140T3
L1
10uH
9
VC
SW
6
R2
40.2k
1%
C5
470pF
50V
BOOST
12
GND
OUT1
3
VOUT
E3
16
C2
10uF
10V
1206
C3
0.47uF
10V
0603
14
E5
7
C7
220pF
50V
E6
FIXED FREQ
**
SYNC
**
1
2
3
4
SYNC
2
ASSY TYPE
U1
VOUT
DC1578A-A
LT3695EMSE-3.3
3.3V
DC1578A-B
LT3695EMSE-5
SEE QUICK START GUIDE
CUSTOMER NOTICE
1
*
GND
JP2
MODE
BURST MODE
*
1A
13
NC
NC
PGND
VOUT
C4
0.22uF
16V
15
2
SYNC
3
1
PGND
OUT2
17
R1
16.2k
1%
RT
4
1
3
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
NOTE: UNLESS OTHERWISE SPECIFIED
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
1. ALL RESISTORS ARE IN 0402.
ALL CAPACITORS ARE IN 0402.
2. INSTALL SHUNTS AS SHOWN.
A
TECHNOLOGY
JW
WALKER B.
B
N/A
SCALE = NONE
C
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
SIZE
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
5V
DATE:
1A FAULT TOLERANT MICROPOWER
STEP-DOWN SWITCHING REGULATOR
IC NO.
LT3695EMSE-3.3/5
DEMO CIRCUIT 1578A-A / B
03-29-10
SHEET
D
E
1
REV.
1
1
OF
1
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