DC1451A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
REV
DATE
1
DESCRIPTION
PRODUCTION
APPROVED
-
JIM N.
01-21-10
2
PRODUCTION
JIM N.
04-06-10
L1
4.7uH
XPL4020-472ML
D
VIN
1.8V - 5.5V
VIN
E1
2
+
E2
CIN3
68uF
6.3V
CIN2
10uF
6.3V
*
GND
C1
100pF
CIN1
10uF
6.3V
8
3
R4
499K
1%
R7
0 Ohm
VIN
RUN
C
Coilcraft
U1
LTC3127EDD
4
5
C2
(Opt)
R6
60.4K
1%
D
1
10
SW1
SW2
VIN
VOUT
VOUT
E3
9
R1
0 Ohm
VC
R2
1M
1%
CO1
10uF
6.3V
CO2
+
2200uF
6.3V
CO3
+
2200uF
6.3V
CO4
+
2200uF
6.3V
CO5
+
(Opt)
VOUT
3.8V @ 2A PULSE LOAD
CO6
(Opt)
E4
GND
C3
(Opt)
SHDN
MODE
PROG
FB
SGND
PGND
6
11
7
C4
(Opt)
R3
464K
1%
1
ON
C
2
3
OFF
R8
10M
JP1
MODE
BURST
DYNAMIC LOAD CIRCUIT
VIN
1
2
3
FCC
JP2
VOUT
E5
R5
10M
IOSTEP CLK
R9
B
B
10K
Q1
SUD50N03-10
J1
R13
IOSTEP
10mV / Amp
51
R10
0.01
1W
R11
(Opt)
2512
E6
GND
CUSTOMER NOTICE
A
* FOR DEMO BOARD USE ONLY
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.
TECHNOLOGY
RB
JIM N.
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
HIGH EFFICIENCY BUCK-BOOST DC/DC CONVERTER
WITH ADJUSTABLE INPUT CURRENT FOR PULSE LOADS
5
4
3
N/A
SCALE = NONE
A
LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY
TITLE: SCHEMATIC
SIZE
C:\ORCADWIN\CAPTURE\1451A\1451A_REV2.DSN
1630 McCarthy Blvd.
Milpitas, CA 95035 www.linear.com
Phone: (408)432-1900
Fax: (408)434-0507
DATE:
2
IC NO.
REV.
LTC3127EDD
DEMO CIRCUIT 1451A
Thursday, June 17, 2010
2
SHEET
1
1
OF
1
Similar pages