DC1541A - Schematic

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8
REVISION HISTORY
ECO
REV
DESCRIPTION
2
A
EDWIN L.
DATE
8-18-10
A
C1
+10uF
100V
SANYO
E2
C2
4.7uF
50V
1
E1
R1
100K
0603
2
GND
APPROVED
VIN
VIN
4.5V - 36V
70V TRANSIENT
PRODUCTION
D1
SOD323
(OPT)
R2
(OPT)
TRK/SS1
C4
1nF
SS2
7
E5
14
VOUT1
R4
0.1
1206
3
R6
0
E9
C12
2.2uF
16V
C17
(OPT)
16V
VOUT1
3.3V / 1.7A
B
15
E8
C10
330pF
VC1
R3
34.0K
19
LIM2
DRV2
C8
(OPT)
C7
47uF
16V
1210
R7
41.2K
16
GND
R5
10.0K
C11
(OPT)
R9
0.1
1206
R8
23.2K
8
E10
LIM3
11
3
2.5V / 450mA
GND
FB1
VOUT1
E6
2
VOUT2
9
L1
4.7uH
IHLP-2525CZ-01-4R7
20
TRK/SS3
DA
1
Q1
ZXTCM322
C5
0.22uF
16V
D2
B340A
C9
1nF
10
18
TRK/SS2
SW
E7
B
17
1
BST
C6
1nF
SS3
C3
0.22uF
16V
BIAS
6
E4
2
*
VIN
SS1
U1
EN/UVLO
EN
E3
FB2
R10
10.0K
DRV3
12
R11
1
Q2
ZXTCM322
2
0
E11
3
E12
R12
PGOOD
R13
14.0K
*
R14
100K
C
C13
2.2uF
16V
SYNC(CLKOUT)
VOUT1
FB3
4
E14
5
PGOOD
RT
VOUT3
1.8V / 450mA
GND
C
R15
10.0K
21
R16
51.1K
E13
13
GND
*
(Fsw = 800KHz)
NOTE: UNLESS OTHERWISE SPECIFIED
1. ALL CAP AND RES ARE IN 0402.
VIN
FB1
FBMJ3216HS800
L2
22uH
VIN
IHLP-4040DZ-01-220
C16
C14
0.01uF
0603
D
C15
4.7uF
50V
+10uF
100V
SANYO
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
OPTIONAL CIRCUIT
*
ASSY
U1
-A
LT3694EFE
-B
LT3694EFE-1
R12
10K
OPEN
CUSTOMER NOTICE
E12
SYNC
CONTRACT NO.
APPROVALS
PCB DES.
EDWIN L.
ENG.
SIZE
CLOCKOUT
2
3
4
5
TITLE: SCHEMATIC
MONOLITHIC STEP-DOWN REGULATOR WITH DUAL LDO
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1
TECHNOLOGY
HZ
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
DATE:
6
IC NO.
LT3694 FAMILY
DEMO CIRCUIT 1541A-A/B
Thursday, November 11, 2010
7
SHEET
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