DC1408A - Schematic

2
3
4
5
6
NOTE: UNLESS OTHERWISE SPECIFIED
ECO
1. ALL RESISTORS ARE IN OHMS 0402
ALL CAPACITORS ARE IN MICROFARADS 0402
E2
CIN1
1uF
25V
0805
VIN1
VIN2
RSD1
1M
RSD2
1M
1
2
3
GND
OFF
VOUT2
3
VOUT2
6
CBYP2
0.01uF
GND
E5
COUT2
10uF
6.3V
0805
JP4
VOUT2 SELECT
BYP2
8
R1F
OPT
R2A
54.9K
ADJ2
NC
ADJ1
GND
R2B
113K
R2C
249K
R2D
402K
R2E
732K
R2F
OPT
9
C
R2
237K
1%
CUSTOMER NOTICE
CONTRACT NO.
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.
APPROVALS
4
VOUT2
500mA
+ COUT2A
(OPT)
7343
1
3
5
7
9
11
BYP1
2
2
+ CIN2A**
10uF
25V
(Opt.)
7343
E7
B
2
4
6
8
10
12
VOUT1
PCB DES.
ENG.
TECHNOLOGY
K.L.
M. ZHU
D
DUAL 500mA LDO REGULATOR
SIZE
IC NO.
LT3029EDE
REV
1
DEMO CIRCUIT 1408A
Friday, February 12, 2010
DATE:
5
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
1
CIN2
1uF
25V
0805
A
VIN2*
2.3V - 20V
11
12
7
16
** CIN1A AND CIN2A ARE OPTIONAL, FOR VIN DAMPING PURPOSE ONLY
E8
VIN2
VOUT2
R1
237K
1%
D
02-12-10
E6
C
* SEE QUICK START GUIDE.
VIN2
VOUT1
GND
R1E
732K
13
4
1
R1D
402K
DATE
M. ZHU
17
R1C
249K
10
GND
R1B
113K
SHDN2
5
R1A
54.9K
SHDN1
3
JP3
VOUT1 SELECT
E4
15
CBYP1
0.01uF
2
4
6
8
10
12
GND
COUT1
10uF
6.3V
0805
VOUT1
VIN1
14
1.5V
1.8V
2.5V
3.3V
5V
OPT.
+ COUT1A
(OPT)
7343
1
3
5
7
9
11
E3
VIN1
U1
LT3029EDE
VOUT1
500mA
APPROVED
PRODUCTION
JP2
VOUT2EN
OFF
ON
JP1
VOUT1EN
B
DESCRIPTION
1
E1
+ CIN1A**
10uF
25V
(OPT)
7343
REV
ON
VIN1*
2.3V - 20V
8
3
2
1
A
7
REVISION HISTORY
1.5V
1.8V
2.5V
3.3V
5V
OPT.
1
6
7
1 OF 1
SHEET
8
Similar pages